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        <KeyEmployeeInd>X</KeyEmployeeInd>
        <ReportableCompFromOrgAmt>182072</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>47101</OtherCompensationAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>ERIN ALLIGOOD</PersonNm>
        <TitleTxt>DIRECTOR, HR &amp; ADMIN</TitleTxt>
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        <KeyEmployeeInd>X</KeyEmployeeInd>
        <ReportableCompFromOrgAmt>180044</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>51582</OtherCompensationAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>ANDREW NEWTON</PersonNm>
        <TitleTxt>CHIEF ENGINEER</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>199509</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>32612</OtherCompensationAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>MICHAEL ABEJUELA</PersonNm>
        <TitleTxt>ASSOCIATE GENERAL COUNSEL</TitleTxt>
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        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>186186</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>36328</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>MATTHEW ROWLEY</PersonNm>
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        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>183845</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>55150</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>PETER TOSCANO</PersonNm>
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        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>179008</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>45858</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>GARTH DUBIN</PersonNm>
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        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>170460</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>53799</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <TotalReportableCompFromOrgAmt>3235571</TotalReportableCompFromOrgAmt>
      <TotReportableCompRltdOrgAmt>0</TotReportableCompRltdOrgAmt>
      <TotalOtherCompensationAmt>696009</TotalOtherCompensationAmt>
      <IndivRcvdGreaterThan100KCnt>42</IndivRcvdGreaterThan100KCnt>
      <FormerOfcrEmployeesListedInd>0</FormerOfcrEmployeesListedInd>
      <TotalCompGreaterThan150KInd>1</TotalCompGreaterThan150KInd>
      <CompensationFromOtherSrcsInd>0</CompensationFromOtherSrcsInd>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>MCDERMOTT WILL &amp; EMERY LLP</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>500 NORTH CAPITOL ST NW</AddressLine1Txt>
            <CityNm>WASHINGTON</CityNm>
            <StateAbbreviationCd>DC</StateAbbreviationCd>
            <ZIPCd>20001</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>LEGAL/CONSULTING SERVICE</ServicesDesc>
        <CompensationAmt>347408</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>STANTON COMMUNICATIONS</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>1150 CONNECTICUT AVE NW SUITE</AddressLine1Txt>
            <CityNm>WASHINGTON</CityNm>
            <StateAbbreviationCd>DC</StateAbbreviationCd>
            <ZIPCd>20036</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>PUBLIC RELATIONS</ServicesDesc>
        <CompensationAmt>149623</CompensationAmt>
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      <CntrctRcvdGreaterThan100KCnt>2</CntrctRcvdGreaterThan100KCnt>
      <ProgramServiceRevenueGrp>
        <Desc>REGISTRATION SERVICES</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>14809470</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>14809470</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>MAINTENANCE FEES</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>2467699</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>2467699</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>NETWORK TRANSFERS</Desc>
        <BusinessCd>900099</BusinessCd>
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        <RelatedOrExemptFuncIncomeAmt>568000</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>IP END-USER REGISTRATI</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>150250</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>150250</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>MEMBERSHIP DUES</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>28464</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>28464</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <TotalOthProgramServiceRevGrp>
        <TotalRevenueColumnAmt>26053</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>26053</RelatedOrExemptFuncIncomeAmt>
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      <TotalProgramServiceRevenueAmt>18049936</TotalProgramServiceRevenueAmt>
      <InvestmentIncomeGrp>
        <TotalRevenueColumnAmt>697823</TotalRevenueColumnAmt>
        <ExclusionAmt>697823</ExclusionAmt>
      </InvestmentIncomeGrp>
      <GrossAmountSalesAssetsGrp>
        <SecuritiesAmt>9674553</SecuritiesAmt>
        <OtherAmt>200</OtherAmt>
      </GrossAmountSalesAssetsGrp>
      <LessCostOthBasisSalesExpnssGrp>
        <SecuritiesAmt>8661377</SecuritiesAmt>
        <OtherAmt>514</OtherAmt>
      </LessCostOthBasisSalesExpnssGrp>
      <GainOrLossGrp>
        <SecuritiesAmt>1013176</SecuritiesAmt>
        <OtherAmt>-314</OtherAmt>
      </GainOrLossGrp>
      <NetGainOrLossInvestmentsGrp>
        <TotalRevenueColumnAmt>1012862</TotalRevenueColumnAmt>
        <ExclusionAmt>1012862</ExclusionAmt>
      </NetGainOrLossInvestmentsGrp>
      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>19760621</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>18049936</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>1710685</ExclusionAmt>
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      <GrantsToDomesticOrgsGrp>
        <TotalAmt>1075000</TotalAmt>
      </GrantsToDomesticOrgsGrp>
      <ForeignGrantsGrp>
        <TotalAmt>163566</TotalAmt>
      </ForeignGrantsGrp>
      <CompCurrentOfcrDirectorsGrp>
        <TotalAmt>2788826</TotalAmt>
      </CompCurrentOfcrDirectorsGrp>
      <OtherSalariesAndWagesGrp>
        <TotalAmt>5447801</TotalAmt>
      </OtherSalariesAndWagesGrp>
      <PensionPlanContributionsGrp>
        <TotalAmt>884447</TotalAmt>
      </PensionPlanContributionsGrp>
      <OtherEmployeeBenefitsGrp>
        <TotalAmt>1101579</TotalAmt>
      </OtherEmployeeBenefitsGrp>
      <PayrollTaxesGrp>
        <TotalAmt>643356</TotalAmt>
      </PayrollTaxesGrp>
      <FeesForServicesLegalGrp>
        <TotalAmt>295991</TotalAmt>
      </FeesForServicesLegalGrp>
      <FeesForServicesAccountingGrp>
        <TotalAmt>37470</TotalAmt>
      </FeesForServicesAccountingGrp>
      <FeesForServicesLobbyingGrp>
        <TotalAmt>123061</TotalAmt>
      </FeesForServicesLobbyingGrp>
      <FeesForSrvcInvstMgmntFeesGrp>
        <TotalAmt>119420</TotalAmt>
      </FeesForSrvcInvstMgmntFeesGrp>
      <FeesForServicesOtherGrp>
        <TotalAmt>135325</TotalAmt>
      </FeesForServicesOtherGrp>
      <OfficeExpensesGrp>
        <TotalAmt>732753</TotalAmt>
      </OfficeExpensesGrp>
      <InformationTechnologyGrp>
        <TotalAmt>610307</TotalAmt>
      </InformationTechnologyGrp>
      <OccupancyGrp>
        <TotalAmt>979324</TotalAmt>
      </OccupancyGrp>
      <TravelGrp>
        <TotalAmt>742369</TotalAmt>
      </TravelGrp>
      <ConferencesMeetingsGrp>
        <TotalAmt>1254668</TotalAmt>
      </ConferencesMeetingsGrp>
      <DepreciationDepletionGrp>
        <TotalAmt>3153262</TotalAmt>
      </DepreciationDepletionGrp>
      <OtherExpensesGrp>
        <Desc>INTERNET/DNS SERVICES</Desc>
        <TotalAmt>775229</TotalAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>NRO EXPENSES</Desc>
        <TotalAmt>279810</TotalAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>OUTREACH EXPENSES</Desc>
        <TotalAmt>259994</TotalAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>BAD DEBT EXP</Desc>
        <TotalAmt>105747</TotalAmt>
      </OtherExpensesGrp>
      <TotalFunctionalExpensesGrp>
        <TotalAmt>21709305</TotalAmt>
      </TotalFunctionalExpensesGrp>
      <CashNonInterestBearingGrp>
        <BOYAmt>350</BOYAmt>
        <EOYAmt>350</EOYAmt>
      </CashNonInterestBearingGrp>
      <SavingsAndTempCashInvstGrp>
        <BOYAmt>1615389</BOYAmt>
        <EOYAmt>795172</EOYAmt>
      </SavingsAndTempCashInvstGrp>
      <AccountsReceivableGrp>
        <BOYAmt>586217</BOYAmt>
        <EOYAmt>366309</EOYAmt>
      </AccountsReceivableGrp>
      <PrepaidExpensesDefrdChargesGrp>
        <BOYAmt>761939</BOYAmt>
        <EOYAmt>809057</EOYAmt>
      </PrepaidExpensesDefrdChargesGrp>
      <LandBldgEquipCostOrOtherBssAmt>25278586</LandBldgEquipCostOrOtherBssAmt>
      <LandBldgEquipAccumDeprecAmt>15588753</LandBldgEquipAccumDeprecAmt>
      <LandBldgEquipBasisNetGrp>
        <BOYAmt>6548110</BOYAmt>
        <EOYAmt>9689833</EOYAmt>
      </LandBldgEquipBasisNetGrp>
      <InvestmentsPubTradedSecGrp>
        <BOYAmt>31690607</BOYAmt>
        <EOYAmt>30277766</EOYAmt>
      </InvestmentsPubTradedSecGrp>
      <OtherAssetsTotalGrp>
        <BOYAmt>695434</BOYAmt>
        <EOYAmt>720475</EOYAmt>
      </OtherAssetsTotalGrp>
      <TotalAssetsGrp>
        <BOYAmt>41898046</BOYAmt>
        <EOYAmt>42658962</EOYAmt>
      </TotalAssetsGrp>
      <AccountsPayableAccrExpnssGrp>
        <BOYAmt>1396111</BOYAmt>
        <EOYAmt>2172075</EOYAmt>
      </AccountsPayableAccrExpnssGrp>
      <DeferredRevenueGrp>
        <BOYAmt>7063644</BOYAmt>
        <EOYAmt>6692871</EOYAmt>
      </DeferredRevenueGrp>
      <OtherLiabilitiesGrp>
        <BOYAmt>259988</BOYAmt>
        <EOYAmt>2516872</EOYAmt>
      </OtherLiabilitiesGrp>
      <TotalLiabilitiesGrp>
        <BOYAmt>8719743</BOYAmt>
        <EOYAmt>11381818</EOYAmt>
      </TotalLiabilitiesGrp>
      <OrganizationFollowsSFAS117Ind>X</OrganizationFollowsSFAS117Ind>
      <UnrestrictedNetAssetsGrp>
        <BOYAmt>33178303</BOYAmt>
        <EOYAmt>31277144</EOYAmt>
      </UnrestrictedNetAssetsGrp>
      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>33178303</BOYAmt>
        <EOYAmt>31277144</EOYAmt>
      </TotalNetAssetsFundBalanceGrp>
      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>41898046</BOYAmt>
        <EOYAmt>42658962</EOYAmt>
      </TotLiabNetAssetsFundBalanceGrp>
      <ReconcilationRevenueExpnssAmt>-1948684</ReconcilationRevenueExpnssAmt>
      <NetUnrlzdGainsLossesInvstAmt>47525</NetUnrlzdGainsLossesInvstAmt>
      <OtherChangesInNetAssetsAmt>0</OtherChangesInNetAssetsAmt>
      <InfoInScheduleOPartXIIInd>X</InfoInScheduleOPartXIIInd>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>0</AccountantCompileOrReviewInd>
      <FSAuditedInd>1</FSAuditedInd>
      <FSAuditedBasisGrp>
        <SeparateBasisFinclStmtInd>X</SeparateBasisFinclStmtInd>
      </FSAuditedBasisGrp>
      <AuditCommitteeInd>1</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>0</FederalGrantAuditRequiredInd>
    </IRS990>
    <IRS990ScheduleC documentId="RetDoc1039700001">
      <SubstantiallyAllDuesNondedInd>0</SubstantiallyAllDuesNondedInd>
      <OnlyInHouseLobbyingInd>0</OnlyInHouseLobbyingInd>
      <AgreeCarryoverPriorYearInd>0</AgreeCarryoverPriorYearInd>
      <DuesAssessmentsAmt>13849864</DuesAssessmentsAmt>
      <NonDeductibleLbbyngPltclCYAmt>123061</NonDeductibleLbbyngPltclCYAmt>
      <NonDeductibleLbbyngPltclTotAmt>123061</NonDeductibleLbbyngPltclTotAmt>
      <TaxableAmt>123061</TaxableAmt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART III - B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE AMERICAN REGISTRY FOR INTERNET NUMBERS, ARIN, MEMBERSHIP CONSISTS OF INTERNET RESOURCE HOLDERS. THERE ARE TWO TYPES OF MEMBERSHIPS AT ARIN. ONE TYPE IS THOSE ORGANIZATIONS WHO HOLD IP ADDRESS ALLOCATIONS THAT ARE AUTOMATICALLY CONVEYED MEMBERSHIP RIGHTS. THESE ORGANIZATIONS PAY THE BULK OF ARIN'S OPERATIONAL EXPENSES ON A RECURRING BASIS. THE ALLOCATION FEES FOR JAN-JUN 2016 WERE SET AT $500, $1,000, $2,000, $4,000, $8,000, $16,000 AND $32,000. ARIN'S FEE STRUCTURE WAS CHANGED 1 JULY 2016 WHICH INCLUDED A CREATION OF FOUR NEW SERVICE CATEGORIES; 3X-SMALL, 3X-LARGE, 4X-LARGE, AND 5X-LARGE SO THE ALLOCATION FEES GOING FORWARD ARE SET AT $250, $500, $1,000, $2,000, $4,000, $8,000, $16,000, $32,000, $64,000, $128,000 AND $256,000. THERE IS NO SET MEMBERSHIP AMOUNT ASSOCIATED WITHIN THE ALLOCATION FEE. THE SECOND TYPE OF MEMBERSHIP ARE THOSE ORGANIZATIONS WHO HOLD IP ADDRESS ASSIGNMENTS AND/OR AUTONOMOUS SYSTEM NUMBERS WHO CHOOSE TO PAY A $500 SPECIFIC MEMBERSHIP FEE FOR THE MEMBERSHIP RIGHTS. WE ARE SHOWING THE ENTIRE REVENUE FROM IP NUMBERS ALLOCATIONS, AS WELL AS THE SPECIFIC MEMBERSHIP FEE IN PART III. FEE WAIVER INFORMATION: ORGANIZATIONS THAT FALL UNDER THE CURRENT FEE SCHEDULE'S 5X-LARGE, 4X-LARGE AND 3X-LARGE SERVICE CATEGORIES WILL RECEIVE A FEE REDUCTION CREDIT AS A RESULT OF ACTION BY THE ARIN BOARD OF TRUSTEES. THIS ONE-TIME ADJUSTMENT IS INTENDED TO MAINTAIN THE SAME FEE FOR AN ORGANIZATION'S RENEWAL AS THE PRIOR FEE SCHEDULE. THE CREDIT ADJUSTMENT APPLIES TO RENEWAL DATES BETWEEN 1 JULY 2016 AND 30 JUNE 2017. AFTER 30 JUNE 2017, INVOICE CREDIT ADJUSTMENTS WILL END AND ORGANIZATIONS WILL BE INVOICED CONSISTENT WITH THE PUBLISHED FEE SCHEDULE.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleC>
    <IRS990ScheduleD documentId="RetDoc1040000001">
      <LeaseholdImprovementsGrp>
        <OtherCostOrOtherBasisAmt>3085890</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>906199</DepreciationAmt>
        <BookValueAmt>2179691</BookValueAmt>
      </LeaseholdImprovementsGrp>
      <EquipmentGrp>
        <OtherCostOrOtherBasisAmt>6285951</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>4750231</DepreciationAmt>
        <BookValueAmt>1535720</BookValueAmt>
      </EquipmentGrp>
      <OtherLandBuildingsGrp>
        <OtherCostOrOtherBasisAmt>15906745</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>9932323</DepreciationAmt>
        <BookValueAmt>5974422</BookValueAmt>
      </OtherLandBuildingsGrp>
      <TotalBookValueLandBuildingsAmt>9689833</TotalBookValueLandBuildingsAmt>
      <OtherLiabilitiesOrgGrp>
        <Desc>DUE TO ICANN</Desc>
        <Amt>122220</Amt>
      </OtherLiabilitiesOrgGrp>
      <OtherLiabilitiesOrgGrp>
        <Desc>DEFERRED RENT</Desc>
        <Amt>2150213</Amt>
      </OtherLiabilitiesOrgGrp>
      <OtherLiabilitiesOrgGrp>
        <Desc>DUE TO NRO</Desc>
        <Amt>244439</Amt>
      </OtherLiabilitiesOrgGrp>
      <TotalLiabilityAmt>2516872</TotalLiabilityAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
      <TotalRevEtcAuditedFinclStmtAmt>20035898</TotalRevEtcAuditedFinclStmtAmt>
      <NetUnrealizedGainsInvstAmt>47525</NetUnrealizedGainsInvstAmt>
      <DonatedServicesAndUseFcltsAmt>227438</DonatedServicesAndUseFcltsAmt>
      <OtherRevenueAmt>314</OtherRevenueAmt>
      <RevenueNotReportedAmt>275277</RevenueNotReportedAmt>
      <RevenueSubtotalAmt>19760621</RevenueSubtotalAmt>
      <RevenueNotReportedFinclStmtAmt>0</RevenueNotReportedFinclStmtAmt>
      <TotalRevenuePerForm990Amt>19760621</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>21937057</TotExpnsEtcAuditedFinclStmtAmt>
      <DonatedServicesUseFcltsAmt>227438</DonatedServicesUseFcltsAmt>
      <OtherExpensesIncludedAmt>314</OtherExpensesIncludedAmt>
      <ExpensesNotReportedAmt>227752</ExpensesNotReportedAmt>
      <ExpensesSubtotalAmt>21709305</ExpensesSubtotalAmt>
      <ExpensesNotRptFinclStmtAmt>0</ExpensesNotRptFinclStmtAmt>
      <TotalExpensesPerForm990Amt>21709305</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>ARIN IS A QUALIFYING NOT-FOR-PROFIT ORGANIZATION AS DEFINED IN SECTION 501(C)(6) OF THE INTERNAL REVENUE CODE AND IS EXEMPT FROM FEDERAL INCOME TAXES. ACCORDINGLY, NO PROVISION FOR INCOME TAXES HAS BEEN MADE IN THE ACCOMPANYING FINANCIAL STATEMENTS. ARIN ADOPTED THE ACCOUNTING STANDARD FOR UNCERTAINTY IN INCOME TAXES, WHICH ADDRESSES THE DETERMINATION OF WHETHER TAX BENEFITS CLAIMED OR EXPECTED TO BE CLAIMED ON A TAX RETURN, SHOULD BE RECORDED IN THE FINANCIAL STATEMENTS. UNDER THIS GUIDANCE, ARIN RECOGNIZES THE TAX BENEFIT FROM AN UNCERTAIN TAX POSITION ONLY IF IT IS MORE LIKELY THAN NOT THAT THE TAX POSITION WILL BE SUSTAINED ON EXAMINATION BY TAXING AUTHORITIES, BASED ON THE TECHNICAL MERITS OF THE POSITION. THE TAX BENEFITS RECOGNIZED IN THE FINANCIAL STATEMENTS FROM SUCH A POSITION ARE MEASURED BASED ON THE LARGEST BENEFIT THAT HAS A GREATER THAN 50% LIKELIHOOD OF BEING REALIZED UPON ULTIMATE SETTLEMENT. THE GUIDANCE ON ACCOUNTING FOR UNCERTAINTY IN INCOME TAXES ALSO ADDRESSES DE-RECOGNITION, CLASSIFICATION, INTEREST AND PENALTIES ON INCOME TAXES, AND ACCOUNTING IN INTERIM PERIODS. MANAGEMENT EVALUATED ARIN'S TAX POSITIONS AND CONCLUDED THAT ARIN HAD TAKEN NO UNCERTAIN TAX POSITIONS THAT REQUIRE ADJUSTMENT TO THE FINANCIAL STATEMENTS TO COMPLY WITH THE PROVISIONS OF THIS GUIDANCE. GENERALLY, ARIN IS NO LONGER SUBJECT TO INCOME TAX EXAMINATIONS BY THE U.S. FEDERAL, STATE OR LOCAL TAX AUTHORITIES FOR YEARS BEFORE 2013.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART XI, LINE 2D - OTHER ADJUSTMENTS:</FormAndLineReferenceDesc>
        <ExplanationTxt>LOSS ON SALE OF ASSETS 314.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART XII, LINE 2D - OTHER ADJUSTMENTS:</FormAndLineReferenceDesc>
        <ExplanationTxt>LOSS ON SALE OF ASSETS 314.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PARTS XI</FormAndLineReferenceDesc>
        <ExplanationTxt>PLEASE NOTE SCHEDULE D, PART XI, 2.B. LISTS $227,438 OF DONATED SERVICES. THESE DONATED SERVICES CONSIST OF TRANSACTIONS RELATED TO INTERESTED PARTIES. THEY WERE ALL "CONTRIBUTIONS IN KIND" SERVICES. THE MAJORITY OF THE DONATED SERVICES IS THE ARIN WEB HOSTING SERVICES PROVIDED BY VERISIGN, INTERNET SYSTEMS CONSORTIUM (ISC), PACKET CLEARINGHOUSE (PCH) AND CIRA, ONE OF THESE ORGANIZATIONS HAS AN ARIN BOARD MEMBER AS THEIR EMPLOYEE, WITH BILL WOODCOCK AT PCH. ARIN BOARD MEMBER BILL SANDIFORD IS A BOARD MEMBER OF CIRA. THE VALUE OF THESE CONTRIBUTED SERVICES IS MARKET PRICED AT $60,000 PER YEAR FOR VERISIGN, ISC AND PCH AND $21,600 PER YEAR FOR CIRA. SPONSORS OF ARIN'S MEMBERS MEETINGS THAT CONTRIBUTED THEIR SERVICES TOTALING $25,838 FOR 2016. WHILE THESE SERVICES WERE SUPPLIED TO ARIN FOR FREE, ARIN RECOGNIZED THE SERVICES RENDERED AS CONTRIBUTION REVENUE WITH AN OFFSET SHOWING THE EXPENSE IN THE COMMUNICATION CATEGORY AND THE MEMBERS MEETING CATEGORY RESPECTIVELY.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleF documentId="RetDoc1040500001">
      <GrantRecordsMaintainedInd>1</GrantRecordsMaintainedInd>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>CENTRAL AMERICA AND THE CARIBBEAN</RegionTxt>
        <TypeOfActivitiesConductedTxt>GRANTS TO CANTO</TypeOfActivitiesConductedTxt>
        <RegionTotalExpendituresAmt>6500</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>CENTRAL AMERICA AND THE CARIBBEAN</RegionTxt>
        <TypeOfActivitiesConductedTxt>GRANTS TO CTU</TypeOfActivitiesConductedTxt>
        <RegionTotalExpendituresAmt>65000</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>CENTRAL AMERICA AND THE CARIBBEAN</RegionTxt>
        <TypeOfActivitiesConductedTxt>ARIN 37 FELLOWSHIPS</TypeOfActivitiesConductedTxt>
        <RegionTotalExpendituresAmt>17585</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
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        <TypeOfActivitiesConductedTxt>ARIN 38 FELLOWSHIPS</TypeOfActivitiesConductedTxt>
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      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>EUROPE (INCLUDING ICELAND &amp; GREENLAND)</RegionTxt>
        <TypeOfActivitiesConductedTxt>GRANTS TO ITU</TypeOfActivitiesConductedTxt>
        <RegionTotalExpendituresAmt>41147</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>NORTH AMERICA</RegionTxt>
        <TypeOfActivitiesConductedTxt>GRANTS TO CANADIAN ISP SUMMIT</TypeOfActivitiesConductedTxt>
        <RegionTotalExpendituresAmt>6908</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>NORTH AMERICA</RegionTxt>
        <TypeOfActivitiesConductedTxt>ARIN 37 FELLOWSHIPS</TypeOfActivitiesConductedTxt>
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      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>NORTH AMERICA</RegionTxt>
        <TypeOfActivitiesConductedTxt>ARIN 38 FELLOWSHIPS</TypeOfActivitiesConductedTxt>
        <RegionTotalExpendituresAmt>9674</RegionTotalExpendituresAmt>
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      <SubtotalEmployeesCnt>0</SubtotalEmployeesCnt>
      <ContinutationTotalOfficeCnt>0</ContinutationTotalOfficeCnt>
      <ContinutationTotalEmployeeCnt>0</ContinutationTotalEmployeeCnt>
      <TotalOfficeCnt>0</TotalOfficeCnt>
      <TotalEmployeeCnt>0</TotalEmployeeCnt>
      <SubtotalSpentAmt>163566</SubtotalSpentAmt>
      <ContinuationSpentAmt>0</ContinuationSpentAmt>
      <TotalSpentAmt>163566</TotalSpentAmt>
      <GrantsToOrgOutsideUSGrp>
        <RegionTxt>CENTRAL AMERICA AND THE CARIBBEAN</RegionTxt>
        <PurposeOfGrantTxt>PROGRAM SUPPORT TO CANTO.</PurposeOfGrantTxt>
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        <MannerOfCashDisbursementTxt>WIRE</MannerOfCashDisbursementTxt>
      </GrantsToOrgOutsideUSGrp>
      <GrantsToOrgOutsideUSGrp>
        <RegionTxt>CENTRAL AMERICA AND THE CARIBBEAN</RegionTxt>
        <PurposeOfGrantTxt>PROGRAM SUPPORT TO CTU.</PurposeOfGrantTxt>
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        <MannerOfCashDisbursementTxt>WIRE</MannerOfCashDisbursementTxt>
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      <GrantsToOrgOutsideUSGrp>
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        <PurposeOfGrantTxt>PROGRAM SUPPORT TO ITU</PurposeOfGrantTxt>
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        <MannerOfCashDisbursementTxt>WIRE</MannerOfCashDisbursementTxt>
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      <GrantsToOrgOutsideUSGrp>
        <RegionTxt>NORTH AMERICA</RegionTxt>
        <PurposeOfGrantTxt>PROGRAM SUPPORT TO CANADIAN ISP</PurposeOfGrantTxt>
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      <ForeignIndividualsGrantsGrp>
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        <RecipientCnt>37</RecipientCnt>
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        <MannerOfCashDisbursementTxt>WIRE</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>ARIN 38 FELLOWSHIPS</TypeOfAssistanceTxt>
        <RegionTxt>CENTRAL AMERICA AND THE CARIBBEAN</RegionTxt>
        <RecipientCnt>38</RecipientCnt>
        <CashGrantAmt>5341</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE</MannerOfCashDisbursementTxt>
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      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>ARIN 37 FELLOWSHIPS</TypeOfAssistanceTxt>
        <RegionTxt>NORTH AMERICA</RegionTxt>
        <RecipientCnt>37</RecipientCnt>
        <CashGrantAmt>11411</CashGrantAmt>
        <MannerOfCashDisbursementTxt>CHECK</MannerOfCashDisbursementTxt>
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      <ForeignIndividualsGrantsGrp>
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        <RecipientCnt>38</RecipientCnt>
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        <MannerOfCashDisbursementTxt>CHECK</MannerOfCashDisbursementTxt>
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      <TransferToForeignCorpInd>0</TransferToForeignCorpInd>
      <InterestInForeignTrustInd>0</InterestInForeignTrustInd>
      <ForeignCorpOwnershipInd>0</ForeignCorpOwnershipInd>
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      <ForeignPartnershipInd>0</ForeignPartnershipInd>
      <BoycottCountriesInd>0</BoycottCountriesInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 2:</FormAndLineReferenceDesc>
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      <SupplementalInformationDetail>
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        <ExplanationTxt>THE ORGANIZATION USES GAAP TO REPORT EXPENDITURES IN A FOREIGN REGION.</ExplanationTxt>
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    </IRS990ScheduleF>
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      <RecipientTable>
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      <RecipientTable>
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        <USAddress>
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          <StateAbbreviationCd>VA</StateAbbreviationCd>
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        <RecipientEIN>541650477</RecipientEIN>
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      <Total501c3OrgCnt>2</Total501c3OrgCnt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>ARIN PROVIDES GRANTS EACH YEAR TO OTHER SIMILAR NON-PROFIT ORGANIZATIONS FOR THE PURPOSE OF FUNDING THEIR PROGRAM SERVICE ACTIVITIES. ARIN RECEIVES INVOICES FROM THOSE NON-PROFIT ORGANIZATIONS TO OFFSET THE COST OF THEIR PROGRAM SERVICE ACTIVITIES. ARIN EXAMS THE INVOICE TO ENSURE THE PROPER USE OF GRANTS IN THOSE NON-PROFIT ORGANIZATIONS.</ExplanationTxt>
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    </IRS990ScheduleI>
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      <CompensationCommitteeInd>X</CompensationCommitteeInd>
      <CompensationSurveyInd>X</CompensationSurveyInd>
      <BoardOrCommitteeApprovalInd>X</BoardOrCommitteeApprovalInd>
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      <SupplementalNonqualRtrPlanInd>0</SupplementalNonqualRtrPlanInd>
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      <RltdOrgOfficerTrstKeyEmplGrp>
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        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>281</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>23837</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>12491</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>222514</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>MATTHEW ROWLEY</PersonNm>
        <TitleTxt>INFRASTRUCTURE MANAGER</TitleTxt>
        <BaseCompensationFilingOrgAmt>162391</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>21150</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>304</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>24719</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>30431</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>238995</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>PETER TOSCANO</PersonNm>
        <TitleTxt>NETWORK OPERATIONS MANAGER</TitleTxt>
        <BaseCompensationFilingOrgAmt>158610</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>19890</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>508</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>24585</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>21273</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>224866</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>GARTH DUBIN</PersonNm>
        <TitleTxt>TECHNICAL MANAGER</TitleTxt>
        <BaseCompensationFilingOrgAmt>153830</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>16345</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>285</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>23393</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>30406</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>224259</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 1A</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FOLLOWING EMPLOYEES RECEIVED TAXABLE HEALTH CLUB BENEFITS DURING FY 2016. ERIN ALLIGOOD: $600 NATE DAVIS: $425 GARTH DUBIN: $240 SUSAN HAMLIN: $360 ANDY NEWTON: $360 AS INDICATED IN SCHEDULE J , AS PART OF ARIN'S BENEFITS PROGRAM, ARIN PROVIDES FOR REIMBURSEMENT FOR HEALTH CLUB MEMBERSHIPS FOR ANY INTERESTED EMPLOYEES UP TO $50 PER MONTH.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART II</FormAndLineReferenceDesc>
        <ExplanationTxt>AS A GENERAL NOTE OF EXPLANATION FOR SCHEDULE J, PART 2 ON COMPENSATION, ARIN CONTRIBUTES 9% TO THE 401K RETIREMENT PLAN OF ANY EMPLOYEE WHO CONTRIBUTES 6% OF THEIR SALARY. THE MATCH IS 6% FOR THE FIRST 3% EMPLOYEE CONTRIBUTION AND THEN DOLLAR FOR DOLLAR UP TO 6% OF THE EMPLOYEE'S SALARY. IN ADDITION, ARIN CONTRIBUTES TO THE HEALTH INSURANCE COST OF EMPLOYEES. SOME EMPLOYEES HAVE OPTED OUT OF ONE OR BOTH OF THESE BENEFITS WHICH WOULD EXPLAIN ANY VARIATION IN THE AMOUNTS LISTED IN EITHER COLUMN C OR D, WITH THE RESULTING TOTAL SHOWING IN COLUMN E.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleJ>
    <IRS990ScheduleL documentId="RetDoc1042800001">
      <BusTrInvolveInterestedPrsnGrp>
        <NameOfInterested>
          <BusinessName>
            <BusinessNameLine1Txt>NANOG</BusinessNameLine1Txt>
          </BusinessName>
        </NameOfInterested>
        <RelationshipDescriptionTxt>SEE PART V</RelationshipDescriptionTxt>
        <TransactionAmt>50000</TransactionAmt>
        <TransactionDesc>SEE PART V</TransactionDesc>
        <SharingOfRevenuesInd>0</SharingOfRevenuesInd>
      </BusTrInvolveInterestedPrsnGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART IV</FormAndLineReferenceDesc>
        <ExplanationTxt>(A) NAME OF PERSON: NANOG(B) RELATIONSHIP BETWEEN INTERESTED PERSON AND ORGANIZATION:KEVIN BLUMBERG - ADVISORY COUNCIL IS ON THE NANOG PROGRAM COMMITTEE(D) DESCRIPTION OF TRANSACTION: ARIN PAID SUPPORT TO NANOG IN THE AMOUNT OF $50,000 FOR THE WEBCAST OF ITS MEETINGS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART IV</FormAndLineReferenceDesc>
        <ExplanationTxt>PLEASE NOTE THAT SCHEDULE L , THE DISCLOSURE OF "BUSINESS TRANSACTIONS INVOLVING INTERESTED PERSONS", RELATES TO ANY TRANSACTION "THAT EXCEEDED THE GREATER OF $10,000 OR 1 PERCENT OF TOTAL REVENUES". FOR AVOIDANCE OF DOUBT, ARIN HAS OPTED TO DISCLOSE ALL BUSINESS TRANSACTIONS OUTSIDE OF NORMAL BUSINESS (E.G. MEMBERSHIP AND/OR REGISTRATION SERVICES FEES) REGARDLESS OF DOLLAR AMOUNT.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleL>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART I, QUESTION 6:</FormAndLineReferenceDesc>
        <ExplanationTxt>ARIN ESTIMATES THAT IT HAS AT LEAST 28 VOLUNTEERS WHO DONATE A SUBSTANTIAL PORTION OF THEIR VALUABLE TIME TO ITS MISSION. THIS INCLUDES ADVISORY COUNCIL MEMBERS, BOARD MEMBERS, AND MEMBERS OF THE COMMUNITY WHO VOLUNTEER THEIR TIME WITH COMMITTEE WORK. PLEASE NOTE, THAT ARIN ALSO MAINTAINS A PUBLIC POLICY MAILING LIST THAT IS QUITE ACTIVE, WITH MANY DIFFERENT MESSAGES SENT FROM MEMBERS OF THE COMMUNITY AND THE GENERAL PUBLIC. THERE ARE ALSO SEVERAL OTHER MAILING LISTS AS WELL AS A SUGGESTION PROCESS ONLINE FOR PEOPLE OR ORGANIZATIONS TO MAKE SUGGESTIONS FOR IMPROVEMENTS. ADDITIONALLY, ARIN PUBLIC POLICY MEETINGS HAVE AN AVERAGE ATTENDANCE OF 150, AND THERE ARE TWO A YEAR. THUS, THE ANSWER TO THIS QUESTION COULD CONCEIVABLY BE IN THE HUNDREDS, DEPENDING UPON LEVEL OF EFFORT TO BE CONSIDERED A VOLUNTEER.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 4</FormAndLineReferenceDesc>
        <ExplanationTxt>CHANGES TO ARIN BYLAWS ADOPTED MAY 20, 2016 1.IMPROVING LANGUAGE FOR OPTIONAL APPOINTMENT OF A TRUSTEE FOR PURPOSES OF BROADENING BOARD DIVERSITY 2.IMPROVING LANGUAGE, WHEN ABSENCE IN THE CHARTER, NOTING THAT THE BOARD SHALL DETERMINE THE TERMS OF SERVICE FOR COMMITTEE MEMBERSHIP 3.CLARIFYING THE STAGGERING OF TERMS OF SERVICE FOR TRUSTEE AND ADVISORY COUNCIL MEMBERS 4.MODIFYING THE TRUSTEE REMOVAL PROCESS TO MAKE REMOVALS BY THE BOARD OF TRUSTEES SUBJECT TO MEMBERSHIP RATIFICATION 5.CLARIFYING THE PROCESS FOR INTERIM APPOINTMENTS AND PARTIAL TERMS 6.CHANGING THE PROCESSES FOR CERTAIN BYLAWS CHANGES AND ARTICLES OF INCORPORATION CHANGES SO ALL PROPOSED CHANGES ARE SENT TO COMMUNITY CONSULTATION BEFORE FINAL ADOPTION BY THE BOARD OF TRUSTEES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 6</FormAndLineReferenceDesc>
        <ExplanationTxt>MEMBERSHIP IS AUTOMATICALLY CONVEYED TO ISPS WHO RECEIVE IP RESOURCES FROM ARIN. MEMBERSHIP IS ALSO OPEN TO ANY ENTITY THAT HAS A SIGNED REGISTRATION SERVICE AGREEMENT (RSA) OR LEGACY RSA WITH ARIN AND HOLDS AN INTERNET NUMBER RESOURCE IN THE ARIN REGION AND WISHES TO PARTICIPATE IN FORMING SOLUTIONS TO INTERNET NUMBER RESOURCE-RELATED ISSUES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7A</FormAndLineReferenceDesc>
        <ExplanationTxt>MEMBER IN GOOD STANDING HAS THE RIGHT TO PARTICIPATE IN AN ELECTION FOR ONE OR MORE MEMBERS OF THE BOARD OF TRUSTEES AND OF THE ADVISORY COUNCIL.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE TRUSTEE REMOVAL PROCESS BY THE BOARD OF TRUSTEES IS SUBJECT TO MEMBERSHIP RATIFICATION. IN ADDITION, THE PROCESSES FOR CERTAIN BYLAWS CHANGES AND ARTICLES OF INCORPORATION CHANGES ARE SENT TO COMMUNITY CONSULTATION BEFORE FINAL ADOPTION BY THE BOARD OF TRUSTEES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 8B</FormAndLineReferenceDesc>
        <ExplanationTxt>ARIN HAD NO COMMITTEES WITH AUTHORITY TO ACT ON BEHALF OF THE GOVERNING BODY.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FINANCE COMMITTEE ASSISTS IN PREPARATION OF THE 990 FILING, THEN PRESENTS IT TO THE FULL BOARD FOR THE FINAL REVIEW, BEFORE FILING TO THE IRS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>AS SET FORTH IN PARAGRAPH THREE BELOW, A TRUSTEE OF ARIN WHO HAS A PERSONAL INTEREST IN A TRANSACTION, AS DEFINED BELOW, MAY NOT PARTICIPATE IN ANY DISCUSSION OF THAT TRANSACTION BY THE TRUSTEES OF ARIN AND MAY NOT VOTE TO DETERMINE WHETHER TO AUTHORIZE, APPROVE, OR RATIFY THAT TRANSACTION EXCEPT AS SPECIFICALLY DESCRIBED BELOW. FOR PURPOSES OF THIS CONFLICT OF INTEREST STATEMENT, A "PERSONAL INTEREST" IS DEFINED AS ANY ACT THAT WILL PROVIDE, DIRECTLY OR INDIRECTLY, A FINANCIAL BENEFIT OR A DISPARATE BENEFIT INDIVIDUALLY TO THE TRUSTEE, OR TO A COMPANY HE OR SHE IS EMPLOYED BY, HAS A SIGNIFICANT FINANCIAL INTEREST IN, OR REPRESENTS IN ANY FASHION. HOWEVER, POLICIES UNDER CONSIDERATION BY ARIN ARE LIKELY TO HAVE AN IMPACT ON THE BUSINESS OF EVERY TRUSTEE. IT IS EXPECTED THAT MOST POLICY DECISIONS WILL HAVE A DIRECT OR INDIRECT IMPACT ON THE TRUSTEE'S COMPANY, BUT SUCH A NON-INDIVIDUALIZED INTEREST DOES NOT CONSTITUTE A "PERSONAL INTEREST" AS USED IN THIS STATEMENT. A "TRANSACTION" WITH ARIN FOR PURPOSES OF THIS STATEMENT IS A CONTRACT OR CONSULTANCY IN WHICH THE TRUSTEE HAS A DIRECT OR INDIRECT FINANCIAL BENEFIT, OR A POLICY UNDER CONSIDERATION THAT WILL HAVE A DISPARATE AND UNUSUAL IMPACT ON A BUSINESS WITH WHICH THE TRUSTEE IS DIRECTLY OR INDIRECTLY ASSOCIATED. THE MERE EXISTENCE OF A PERSONAL INTEREST BY A TRUSTEE OF ARIN IN A TRANSACTION WITH ARIN SHALL NOT INVALIDATE ARIN'S ABILITY TO ENTER THAT TRANSACTION SO LONG AS THE FOLLOWING CONDITIONS ARE MET: (I) THE MATERIAL FACTS OF THE PERSONAL NATURE OF THE TRANSACTION WITH ARIN AND THE TRUSTEE'S INTEREST IN THE TRANSACTION WITH ARIN ARE FULLY DISCLOSED TO THE BOARD OF TRUSTEES OF ARIN, EITHER BY THE TRUSTEE HAVING A DIRECT OR INDIRECT PERSONAL INTEREST IN THE TRANSACTION WITH ARIN, OR ARE BROUGHT TO THE ATTENTION OF THE BOARD BY A THIRD PARTY; OR (II) THE BOARD OF TRUSTEES OF ARIN, BY A VOTE OF THE DISINTERESTED TRUSTEES OF ARIN VOTE TO AUTHORIZE, APPROVE, OR RATIFY A TRANSACTION WITH ARIN; OR (III) THE TRANSACTION WITH ARIN IN WHICH THE DIRECT OR INDIRECT PERSONAL INTEREST OF AN ARIN TRUSTEE WAS DISCLOSED TO THE BOARD OF TRUSTEES OF ARIN AND WAS DETERMINED BY THE BOARD OF TRUSTEES OF ARIN ENTITLED TO VOTE ON THE MATTER IS DETERMINED BY THE BOARD OF TRUSTEES VOTING TO BE IN ARIN'S INTERESTS, NOTWITHSTANDING THE PERSONAL INTEREST OF THE NON-VOTING TRUSTEE. IN DETERMINING WHETHER A CONFLICT OF INTEREST EXISTS, THE BOARD OF TRUSTEES OF ARIN HAS THE PREROGATIVE, UPON REVIEW OF ALL FACTS AND CIRCUMSTANCES, TO MAKE ITS OWN DETERMINATION OF WHETHER A CONFLICT OF INTEREST EXISTS AND HOW IT IS APPROPRIATE TO PROCEED. A TRUSTEE WHO PERCEIVES THE POSSIBILITY OF A CONFLICT OF INTEREST FOR HIM OR HERSELF, OR FOR ANOTHER BOARD MEMBER, MAY RAISE THIS ISSUE AT ANY POINT PRIOR TO A VOTE ON ANY ISSUE. ANY TRUSTEE WHO PERCEIVES A POSSIBLE CONFLICT OF INTEREST MAY PRESENT JUSTIFICATION WITH RESPECT TO WHETHER OR NOT A CONFLICT OF INTEREST EXISTS, BUT THE ENTIRE BOARD, WITH THE EXCEPTION OF THE TRUSTEE HAVING THE POTENTIAL CONFLICT OF INTEREST, SHALL MAKE THE FINAL DETERMINATION TO PROCEED IN SUCH A MATTER. IF THE BOARD OF TRUSTEES FINDS THERE IS A CONFLICT OF INTEREST, THE TRUSTEE WITH THE CONFLICT MAY BE EXCLUDED BY THE CHAIR OF THE BOARD FROM THAT PORTION OF ANY MEETING WHERE A SUBSTANTIVE DISCUSSION OR DECISION TO ENGAGE OR NOT IN SUCH A TRANSACTION IS MADE, EXCEPT THAT HE OR SHE MAY PROVIDE ANY INFORMATION THAT WILL ASSIST THE TRUSTEES IN SUCH A MATTER BEFORE LEAVING SUCH A MEETING.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15</FormAndLineReferenceDesc>
        <ExplanationTxt>THE COMPENSATION COMMITTEE OF THE ARIN BOARD OF TRUSTEES SETS THE COMPENSATION FOR THE CEO. SEVERAL FACTORS ARE CONSIDERED IN SETTING THE COMPENSATION RATE. THE JOB DESCRIPTION FOR THE CEO FULLY DETAILS THE EXPECTATIONS FOR PERFORMANCE AND ALSO DESCRIBES THE AMOUNT OF BONUS TO BE AWARDED. THE ANNUAL BONUS FOR THE CEO IS BASED ON JOB PERFORMANCE, THERE IS NO AUTOMATIC BONUS PAYMENT GIVEN. ARIN CONDUCTS A FULL MARKET PRICING SALARY SURVEY EVERY THREE YEARS, COMPARING ALL COMPANY POSITIONS TO COMPARABLE BUSINESS IN THE AREA. CEO SALARY LEVELS ARE ALSO CULLED FROM PRIVATE SOURCES AND JOB ADVERTISEMENTS. THE PERFORMANCE AND EXPERIENCE LEVEL OF THE CURRENT CEO ARE ALSO CONSIDERED WHEN SETTING THE ANNUAL BONUS AND PAY RAISE AMOUNT. THE MEMBERS OF THE COMPENSATION COMMITTEE CONVENE PERIODICALLY THROUGHOUT THE YEAR TO ASSESS THE PERFORMANCE OF THE CEO. ANNUALLY, THEY FORMALLY MEET, ANALYZE THE INFORMATION THEY HAVE GATHERED, AND DECIDE THE ANNUAL BONUS AMOUNT. ARIN CONSIDERS THE SALARY SURVEY INFORMATION, PAYS RAISE PERCENTAGE FROM OUR GEOGRAPHIC REGION, AND OTHER INFORMATION GLEANED FROM BUSINESS PUBLICATIONS THAT PERTAIN TO EXECUTIVE PAY. EVERY 2-3 YEARS, ARIN CONDUCTS A COMPANY WIDE SALARY SURVEY/MARKET PRICING OF ALL COMPANY POSITIONS. UPDATED JOB DESCRIPTIONS AND JOB TITLES ARE PROVIDED TO A COMPANY THAT WORKS WITH CURRENT DETAILED DATA FROM MAJOR COMPENSATION SURVEYS. WE COMPARE ARIN SALARIES TO THE LOCAL AREA, THE NORTHEAST CORRIDOR, NATIONWIDE TECHNOLOGY COMPANIES, NATIONWIDE TRADE AND MEMBERSHIP ASSOCIATION, LOCAL TRADE AND MEMBERSHIP ASSOCIATIONS, NATIONAL NONPROFIT COMPANIES AND LOCAL NONPROFIT COMPANIES. SOME OF THE SURVEYS WE USE INCLUDE: CULPEPPER, MERCER, CORDOM, PRM AND ASAE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION'S ORGANIZING DOCUMENTS, FINANCIAL STATEMENTS AND CONFLICT OF INTEREST POLICY ARE AVAILABLE AND CAN BE FOUND ON THE ORGANIZATION'S WEBSITE FOR THE SAME PERIOD OF DISCLOSURE AS SET FORTH IN SECTION 6104(D).</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART XII, LINE 2C</FormAndLineReferenceDesc>
        <ExplanationTxt>THE PROCESS FOR OVERSEEING THE AUDIT OF THE FINANCIAL STATEMENTS AND SELECTION OF AN INDEPENDENT ACCOUNTANT THAT AUDITED THE FINANCIAL STATEMENTS HAS BEEN CONSISTENT WITH PRIOR YEARS.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>