Liabilities / Assets
66th percentile
Higher debt load relative to assets than 66% of similar nonprofits.
EIN 54-1860956 • 501(c)6 • Centreville, VA
Profile
Arin, a nonprofit member-based organization, supports the operation of the internet through the management of internet number resources throughout its service region; coordinates the development of policies by the community for the management of internet protocol number resources; and advances the internet through informational outreach.
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
66th percentile
Higher debt load relative to assets than 66% of similar nonprofits.
Liabilities / Revenue
68th percentile
Higher debt load relative to revenue than 68% of similar nonprofits.
Net Margin
24th percentile
Higher net margin than 24% of similar nonprofits.
Top Officer Pay
95th percentile
Higher top officer pay than 95% of similar nonprofits.
Top officer pay equals 2.4% of source-year revenue.
Asset Growth
21st percentile
Faster asset growth than 21% of similar nonprofits.
Revenue Growth
30th percentile
Faster revenue growth than 30% of similar nonprofits.
Assets
Up$45,236,043
Up $151,225 (+0.3%) from 2023
Liabilities
Down$18,965,460
Down $804,086 (-4.1%) from 2023
Net Assets
Up$26,270,583
Up $955,311 (+3.8%) from 2023
Revenue
Up$29,435,380
Up $657,390 (+2.3%) from 2023
Expenses
Up$29,950,624
Up $4,539 (+0.0%) from 2023
Net Income
Up-$515,244
Up $652,851 (+56%) from 2023
Most recent year
2024 • Form 990Facts available. Structured filing facts are available, but richer extracted sections are limited.
Arin, a nonprofit member-based organization, supports the operation of the internet through the management of internet number resources throughout its service region; coordinates the development of policies by the community for the management of internet protocol number resources; and advances the internet through informational outreach.
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Investments in Publicly Traded Securities | $33,106,443 | $32,478,024 | ▼ $628,419 |
| Land, Buildings, and Equipment, Net | $3,582,973 | $3,883,220 | ▲ $300,247 |
| Investments Other Securities | $2,986,200 | $3,293,369 | ▲ $307,169 |
| Prepaid Expenses and Deferred Charges | $678,612 | $1,006,691 | ▲ $328,079 |
| Accounts Receivable | $937,389 | $955,136 | ▲ $17,747 |
| Savings and Temporary Cash Investments | $791,618 | $830,200 | ▲ $38,582 |
| Total Assets | $45,084,818 | $45,236,043 | ▲ $151,225 |
| Other Assets Total | $3,001,583 | $2,789,403 | ▼ $212,180 |
| Liabilities | |||
| Deferred Revenue | $12,368,196 | $12,707,046 | ▲ $338,850 |
| Other Liabilities | $3,900,762 | $3,614,101 | ▼ $286,661 |
| Accounts Payable and Accrued Expenses | $3,500,588 | $2,644,313 | ▼ $856,275 |
| Total Liabilities | $19,769,546 | $18,965,460 | ▼ $804,086 |
| Net Assets / Fund Balance | |||
| Net Assets Without Donor Restrictions | $25,315,272 | $26,270,583 | ▲ $955,311 |
| Total Net Assets Fund Balance | $25,315,272 | $26,270,583 | ▲ $955,311 |
| Total Liabilities and Net Assets / Fund Balance | $45,084,818 | $45,236,043 | ▲ $151,225 |
| Asset | Book Value | Depreciation | Basis |
|---|---|---|---|
| Other Land Buildings | $2,715,295 | $17,492,459 | $20,207,754 |
| Equipment | $650,775 | $5,431,245 | $6,082,020 |
| Buildings | $517,150 | $1,914,120 | $2,431,270 |
| Other Assets Org | $180,527 | - | - |
| Other Securities | $3,293,369 | - | - |
| Name | Title | Full / Part Time | Base | Other | Total |
|---|---|---|---|---|---|
| John Curran | President and CEO | FT | $445,625 | $248,846 | $694,471 |
| Richard Jimmerson | COO | FT | $332,580 | $174,786 | $507,366 |
| Brian Kirk | CFO | FT | $317,340 | $157,765 | $475,105 |
| John Sweeting | CXO | FT | $283,540 | $157,578 | $441,118 |
| Mark Kosters | CTO | FT | $282,780 | $149,114 | $431,894 |
| Michael Abejuela | General Counsel | FT | $294,650 | $131,157 | $425,807 |
| Erin Alligood | Chro | FT | $269,370 | $154,026 | $423,396 |
| Einar Bohlin | VP, Govt Affairs | FT | $245,005 | $123,708 | $368,713 |
| Robert Christian Johnson | Ciso | FT | $233,955 | $127,504 | $361,459 |
| Reginald Forster | Director, Operations | FT | $219,055 | $118,669 | $337,724 |
| Debra Martin | Director, Eng Program Management | FT | $216,615 | $109,527 | $326,142 |
| Garth Dubin | Director, Software Engineering | FT | $214,840 | $110,728 | $325,568 |
| Peter Toscano | Director, Iss | FT | $218,240 | $106,828 | $325,068 |
| Name | Title |
|---|---|
| Bill Sandiford | Chair |
| Tina Morris | Vice Chair |
| Chris Tacit | Board Trustee |
| Dan Alexander | Board Trustee |
| Hank Kilmer | Board Trustee |
| Peter Harrison | Board Trustee |
| Robert Seastrom | Board Trustee |
| Nancy Carter | Treasurer |
| Contractor | Services | Location | Compensation |
|---|---|---|---|
| Viridion LLC | Caribbean Outreach | 304 INDIAN TRACE SUITE 888, Weston, FL 33326 | $247,351 |
| Winston & Strawn LLP | Legal Services | 35 WEST WACKER DRIVE, Chicago, IL 60601-9703 | $168,184 |
| Line Item | Amount |
|---|---|
| Salaries, Compensation, and Employee Benefits | $20,881,926 |
| Other Expenses | $8,921,519 |
| Grants and Similar Amounts Paid | $147,179 |
| Professional Fundraising Fees | $0 |
| Total Fundraising Expense | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Other Salaries and Wages | - | - | - | $13,166,449 |
| Current Officers, Directors, Trustees, and Key Employees | - | - | - | $3,736,882 |
| Information Technology | - | - | - | $2,247,082 |
| Other Employee Benefits | - | - | - | $1,522,057 |
| Pension Plan Contributions | - | - | - | $1,402,880 |
| Depreciation Depletion | - | - | - | $1,373,689 |
| Travel | - | - | - | $1,155,364 |
| Payroll Taxes | - | - | - | $1,053,658 |
| Conferences and Meetings | - | - | - | $760,340 |
| Office Expenses | - | - | - | $756,529 |
| Occupancy | - | - | - | $574,938 |
| Fees for Services Other | - | - | - | $514,070 |
| Fees for Services Legal | - | - | - | $299,801 |
| Insurance | - | - | - | $187,306 |
| Other Expenses | - | - | - | $138,215 |
| Foreign Grants | - | - | - | $127,179 |
| Fees for Services Lobbying | - | - | - | $86,821 |
| Fees for Services Accounting | - | - | - | $64,920 |
| Fees for Service Investment Mgmnt Fees | - | - | - | $53,973 |
| Grants to Domestic Orgs | - | - | - | $20,000 |
| Interest | - | - | - | $4,500 |
| Total Functional Expenses | $0 | $0 | $0 | $29,950,624 |
| Line Item | Amount |
|---|---|
| Total Expenses per Audited Statements | $30,296,651 |
| Total Expenses per Form 990 | $29,950,624 |
| Expenses per Audited Statements | $29,896,651 |
| Expenses Not Reported on Form 990 | $400,000 |
| Expenses Not Reported on Financial Statements | $53,973 |
| Recipient | Location | Category | Purpose | Amount |
|---|---|---|---|---|
| Internet Society | Reston, VA | 501(c)(3) | Operational Support | $20,000 |
| Region | Activity | Services | Offices | Employees | Spending |
|---|---|---|---|---|---|
| Central America and the Caribbean | Program Services | - | 0 | 1 | $247,351 |
| Central America and the Caribbean | Grants to Recipients in the Region | - | 0 | 0 | $94,950 |
| Europe | Grants to Recipients in the Region | - | 0 | 0 | $20,000 |
| South America | Program Services | - | 0 | 0 | $8,000 |
| Europe | Program Services | - | 0 | 0 | $2,229 |
| North America | Program Services | - | 0 | 0 | $2,000 |
| Line Item | Amount |
|---|---|
| Professional Fundraising Fees | $0 |
| Line Item | Amount |
|---|---|
| Current Year Nondeductible Lobbying and Political Cost | $86,821 |
| Total Nondeductible Lobbying and Political Cost | $86,821 |
| Liability | Amount |
|---|---|
| Operating Leases | $2,342,528 |
| Finance Leases | $955,977 |
| Due to Nro | $159,175 |
| Due to Icann | $156,421 |
“Membership is open to any entity that has a signed registration services 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.”
“A general 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.”
“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.”
“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 internal revenue service.”
“The organization regularly and consistently monitors and enforces compliance with the conflict of interest policy including in the following ways: 1) the board of trustees conducts an annual review wherein each trustee completes a confidential conflict of interest and disclosure form of interests that could give rise to conflicts and that form is then reviewed by all the other trustees. This is conducted in january of each year at the board's first meeting of the year. 2) at the first meeting of the board in each calendar year, the organization's general counsel provides an annual reminder and training session to the board of trustees regarding the topic of conflict of interest and the board members' duty to disclose and avoid conflicts of interest. 3) the organization maintains a conflict of interest policy in its employee handbook and all staff, including key employees and officers, are required to annually execute an acknowledgement of and agreement to adhere to all policies in the employee handbook. 4) throughout the year, board members as well as key employees and officers are afforded the opportunity to disclose any conflicts that may arise during the year.”
“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. 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 2-3 years, comparing all company positions to comparable businesses in the area. Ceo salary levels are also pulled from this data. The performance and experience level of the current ceo are also considered when setting the annual bonus and annual pay change. 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 and any salary change. Ceo/president compensation disclosure: based upon total compensation amounts for the president/ceo and all other individuals employed by arin in 2024, the ratio of president/ceo total compensation to the median of employee total compensation is 3.8. Form 990, part vi, section b, line 15b: arin considers the salary survey information, pay raise percentage from our geographic region, and other information gleaned from business publications that pertain to executive pay when determining executive pay. Every 2-3 years, arin conducts a companywide salary survey 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. Arin salaries are compared to companies in the local area, the northeast corridor, nationwide technology companies, nationwide trade and membership associations, local trade and membership association, national nonprofit companies and local nonprofit companies.”
“The organization's governing 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).”
“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. 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. Arin recognizes interest expense and penalties related to income taxes on uncertain tax positions in management and general expenses on the statements of activities and accounts payable and accrued expenses in the statements of financial position. No interest expense and penalties related to income taxes on uncertain tax positions were recognized for the years ended december 31, 2024 and 2023. Arin files income tax returns in the u.s. Federal jurisdiction. In accordance with fasb asc 740, income taxes, arin recognizes tax liabilities for uncertain tax positions when it is more likely than not that a tax position will not be sustained upon examination and settlement with various taxing authorities. Liabilities for uncertain tax positions are measured based upon the largest amount of benefit that is greater than 50% likely of being realized upon settlement. The guidance on accounting for uncertainty in income taxes also addresses derecognition, classification, interest and penalties on income taxes, and accounting in interim periods. With a few exceptions, arin is no longer subject to income tax examinations by the u.s. Federal, state, or local tax authorities for years before fiscal year 2021. Management has evaluated arin's tax positions and has concluded that arin has taken no uncertain tax positions that require adjustment to the financial statements to comply with the provisions of this guidance.”
This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.
| Path | # | Value |
|---|---|---|
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| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 2644313 |
| IRS990/AccountsReceivableGrp/BOYAmt | 0 | 937389 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 955136 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | 0 |
| IRS990/ActivityOrMissionDesc | 0 | ARIN, A NONPROFIT MEMBER-BASED ORGANIZATION, SUPPORTS THE OPERATION OF THE INTERNET THROUGH THE MANAGEMENT OF INTERNET NUMBER RESOURCES THROUGHOUT ITS SERVICE REGION; COORDINATES THE DEVELOPMENT OF POLICIES BY THE COMMUNITY FOR THE MANAGEMENT OF INTERNET PROTOCOL NUMBER RESOURCES; AND ADVANCES THE INTERNET THROUGH INFORMATIONAL OUTREACH. |
| IRS990/AllAffiliatesIncludedInd | 0 | 1 |
| IRS990/AllOtherContributionsAmt | 0 | 78917 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | 1 |
| IRS990/AuditCommitteeInd | 0 | 1 |
| IRS990/BackupWthldComplianceInd | 0 | 1 |
| IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | BRIAN KIRK |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 7032279840 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | PO BOX 232290 |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | CENTREVILLE |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | VA |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 20120 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | 0 |
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| IRS990/BusinessRlnWithOrgMemInd | 0 | 0 |
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| IRS990/CollectionsOfArtInd | 0 | 0 |
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| IRS990/CompensationFromOtherSrcsInd | 0 | 0 |
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| IRS990/CompensationProcessOtherInd | 0 | 1 |
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| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 1 | WINSTON & STRAWN LLP |
| IRS990/ContractorCompensationGrp/ServicesDesc | 0 | CARIBBEAN OUTREACH |
| IRS990/ContractorCompensationGrp/ServicesDesc | 1 | LEGAL SERVICES |
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| IRS990/CYInvestmentIncomeAmt | 0 | 962170 |
| IRS990/CYOtherExpensesAmt | 0 | 8921519 |
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| IRS990/CYRevenuesLessExpensesAmt | 0 | -515244 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 20881926 |
| IRS990/CYTotalExpensesAmt | 0 | 29950624 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 0 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 29435380 |
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| IRS990/DeferredRevenueGrp/EOYAmt | 0 | 12707046 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | 0 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 1373689 |
| IRS990/Desc | 0 | ESTABLISHED IN DECEMBER 1997, THE AMERICAN REGISTRY FOR INTERNET NUMBERS (ARIN) IS A REGIONAL INTERNET REGISTRY (RIR) INCORPORATED IN THE COMMONWEALTH OF VIRGINIA, USA. ARIN, A NONPROFIT ORGANIZATION, PROVIDES SERVICES RELATED TO THE TECHNICAL COORDINATION AND MANAGEMENT OF INTERNET NUMBER RESOURCES IN ITS RESPECTIVE SERVICE REGION. STAKEHOLDERS IN THE COMMUNITY DRIVE POLICIES AND ACTIVITIES. ARIN PROMOTES THE COMMON BUSINESS INTERESTS OF ITS MEMBERS BY OVERSEEING THE INTERNET PROTOCOL (IP) ADDRESS REGISTRATION PROCESS SO AS TO PROMOTE MORE EFFICIENT USE OF THE INTERNET BY ITS MEMBERS AND OTHER INTERESTED USERS AND THEREBY PROMOTE THE EFFICIENCY OF THE BUSINESS OPERATIONS OF EACH. |
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| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | 0 |
| IRS990/ElectionOfBoardMembersInd | 0 | 1 |
| IRS990/EmployeeCnt | 0 | 107 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | 1 |
| IRS990/FamilyOrBusinessRlnInd | 0 | 0 |
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| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 299801 |
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| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 514070 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/TotalAmt | 0 | 53973 |
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| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 14 | 40.00 |
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| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 17 | 40.00 |
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| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 19 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 20 | 40.00 |
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| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 6 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 7 | X |
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| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 5 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 6 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 7 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 8 | X |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 76850 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 9 | 88995 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 10 | 73823 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 11 | 56652 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 12 | 76656 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 13 | 85176 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 14 | 87981 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 15 | 68415 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 16 | 70330 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 17 | 78899 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 18 | 56388 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 19 | 61742 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 20 | 63259 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | JOHN CURRAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | BILL SANDIFORD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | TINA MORRIS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | NANCY CARTER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | PETER HARRISON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | ROBERT SEASTROM |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | HANK KILMER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | DAN ALEXANDER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | CHRIS TACIT |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | RICHARD JIMMERSON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | BRIAN KIRK |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | MICHAEL ABEJUELA |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | JOHN SWEETING |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 13 | ERIN ALLIGOOD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 14 | MARK KOSTERS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 15 | REGINALD FORSTER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 16 | EINAR BOHLIN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 17 | ROBERT CHRISTIAN JOHNSON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 18 | GARTH DUBIN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 19 | PETER TOSCANO |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 20 | DEBRA MARTIN |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 617621 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 9 | 418371 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 10 | 401282 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 11 | 369155 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 12 | 364462 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 13 | 338220 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 14 | 343913 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 15 | 269309 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 16 | 298383 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 17 | 282560 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 18 | 269180 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 19 | 263326 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 20 | 262883 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 13 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 14 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 15 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 16 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 17 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 18 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 19 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 20 | 0 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | PRESIDENT AND CEO |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | CHAIR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | VICE CHAIR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | TREASURER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | BOARD TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | BOARD TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | BOARD TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | BOARD TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | BOARD TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | COO |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | CFO |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 11 | GENERAL COUNSEL |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 12 | CXO |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 13 | CHRO |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 14 | CTO |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 15 | DIRECTOR, OPERATIONS |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 16 | VP, GOVT AFFAIRS |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 17 | CISO |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 18 | DIRECTOR, SOFTWARE ENGINEERING |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 19 | DIRECTOR, ISS |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 20 | DIRECTOR, ENG PROGRAM MANAGEMENT |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | 1 |
| IRS990/FormationYr | 0 | 1997 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | 0 |
| IRS990/FSAuditedBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | 1 |
| IRS990/FundraisingActivitiesInd | 0 | 0 |
| IRS990/GainOrLossGrp/SecuritiesAmt | 0 | -456332 |
| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 9 |
| IRS990/GrantsToDomesticOrgsGrp/TotalAmt | 0 | 20000 |
| IRS990/GrantsToIndividualsInd | 0 | 0 |
| IRS990/GrantsToOrganizationsInd | 0 | 1 |
| IRS990/GrantToRelatedPersonInd | 0 | 0 |
| IRS990/GrossAmountSalesAssetsGrp/SecuritiesAmt | 0 | 9528886 |
| IRS990/GrossReceiptsAmt | 0 | 39420598 |
| IRS990/GroupReturnForAffiliatesInd | 0 | 0 |
| IRS990/IncludeFIN48FootnoteInd | 0 | 1 |
| IRS990/IndependentAuditFinclStmtInd | 0 | 1 |
| IRS990/IndependentVotingMemberCnt | 0 | 8 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 68 |
| IRS990/IndoorTanningServicesInd | 0 | 0 |
| IRS990/InfoInScheduleOPartIIIInd | 0 | X |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 2247082 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 187306 |
| IRS990/InterestGrp/TotalAmt | 0 | 4500 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 1418502 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 1418502 |
| IRS990/InvestmentInJointVentureInd | 0 | 0 |
| IRS990/InvestmentsOtherSecuritiesGrp/BOYAmt | 0 | 2986200 |
| IRS990/InvestmentsOtherSecuritiesGrp/EOYAmt | 0 | 3293369 |
| IRS990/InvestmentsPubTradedSecGrp/BOYAmt | 0 | 33106443 |
| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 32478024 |
| IRS990/IRPDocumentCnt | 0 | 27 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 24837824 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 3582973 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 3883220 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 28721044 |
| IRS990/LegalDomicileStateCd | 0 | VA |
| IRS990/LessCostOthBasisSalesExpnssGrp/SecuritiesAmt | 0 | 9985218 |
| IRS990/LoanOutstandingInd | 0 | 0 |
| IRS990/LocalChaptersInd | 0 | 0 |
| IRS990/MaterialDiversionOrMisuseInd | 0 | 0 |
| IRS990/MembersOrStockholdersInd | 0 | 1 |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | 1 |
| IRS990/MinutesOfGoverningBodyInd | 0 | 1 |
| IRS990/MissionDesc | 0 | ARIN, A NONPROFIT MEMBER-BASED ORGANIZATION, SUPPORTS THE OPERATION OF THE INTERNET THROUGH THE MANAGEMENT OF INTERNET NUMBER RESOURCES THROUGHOUT ITS SERVICE REGION; COORDINATES THE DEVELOPMENT OF POLICIES BY THE COMMUNITY FOR THE MANAGEMENT OF INTERNET PROTOCOL NUMBER RESOURCES; AND ADVANCES THE INTERNET THROUGH INFORMATIONAL OUTREACH. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | 0 |
| IRS990/MoreThan5000KToOrgInd | 0 | 1 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 25315272 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 26270583 |
| IRS990/NetGainOrLossInvestmentsGrp/ExclusionAmt | 0 | -456332 |
| IRS990/NetGainOrLossInvestmentsGrp/TotalRevenueColumnAmt | 0 | -456332 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NetUnrlzdGainsLossesInvstAmt | 0 | 1470555 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 25315272 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 26270583 |
| IRS990/NondeductibleContributionsInd | 0 | 0 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 574938 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 756529 |
| IRS990/OfficerMailingAddressInd | 0 | 0 |
| IRS990/OperateHospitalInd | 0 | 0 |
| IRS990/Organization501cInd | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/BOYAmt | 0 | 3001583 |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 2789403 |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 0 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 1522057 |
| IRS990/OtherExpensesGrp/Desc | 0 | INTERNET SUPPORT |
| IRS990/OtherExpensesGrp/Desc | 1 | OUTREACH EXPENSES |
| IRS990/OtherExpensesGrp/Desc | 2 | BAD DEBT EXPENSE |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 505188 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 198783 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 138215 |
| IRS990/OtherLiabilitiesGrp/BOYAmt | 0 | 3900762 |
| IRS990/OtherLiabilitiesGrp/EOYAmt | 0 | 3614101 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 13166449 |
| IRS990/PartialLiquidationInd | 0 | 0 |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 1053658 |
| IRS990/PensionPlanContributionsGrp/TotalAmt | 0 | 1402880 |
| IRS990/PoliticalCampaignActyInd | 0 | 0 |
| IRS990/PrepaidExpensesDefrdChargesGrp/BOYAmt | 0 | 678612 |
| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 1006691 |
| IRS990/PrincipalOfficerNm | 0 | JOHN CURRAN |
| IRS990/ProfessionalFundraisingInd | 0 | 0 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 0 | 900099 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 1 | 900099 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 2 | 900099 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 3 | 900099 |
| IRS990/ProgramServiceRevenueGrp/Desc | 0 | RENEWAL REGISTRATION FEES |
| IRS990/ProgramServiceRevenueGrp/Desc | 1 | NETWORK TRANSFERS |
| IRS990/ProgramServiceRevenueGrp/Desc | 2 | INITIAL REGISTRATION FEES |
| IRS990/ProgramServiceRevenueGrp/Desc | 3 | OTHER REVENUE |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 25828477 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 1 | 1636187 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 2 | 701532 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 3 | 228097 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 0 | 25828477 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 1 | 1636187 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 2 | 701532 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 3 | 228097 |
| IRS990/ProgSrvcAccomActy2Grp/Desc | 0 | REGISTRATION SERVICES INCLUDES COORDINATION AND MANAGEMENT OF IP ADDRESS SPACE AND ASN ALLOCATIONS, RESOURCE TRANSFERS, RECORD MAINTENANCE, REGISTRATION TRANSACTION INFORMATION (WHOIS), ROUTING INFORMATION (INTERNET ROUTING REGISTRY), AND REVERSE DNS. ARIN ALLOCATES INTERNET NUMBER RESOURCES TO INTERNET SERVICE PROVIDERS AND END USERS WITHIN ITS SERVICE REGION. |
| IRS990/ProgSrvcAccomActy3Grp/Desc | 0 | IP NUMBER MANAGEMENT - ARIN IS TASKED WITH THE MANAGEMENT OF IP ADDRESS SPACE, AUTONOMOUS SYSTEM NUMBERS, AND IN-ADDR ARPA ADDRESS MAPPING, AS WELL AS DATABASE MAINTENANCE AND VERIFICATION OF REASSIGNMENT INFORMATION. ARIN ALSO PROMOTES THE CONSERVATION OF INTERNET PROTOCOL RESOURCES AND DISTRIBUTES GLOBALLY UNIQUE INTERNET ADDRESSES IN A HIERARCHICAL MANNER, PERMITTING THE ROUTING SCALABILITY OF ADDRESSES, WHICH IS NECESSARY TO ENSURE PROPER OPERATION OF INTERNET ROUTING. |
| IRS990/ProhibitedTaxShelterTransInd | 0 | 0 |
| IRS990/PYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/PYContributionsGrantsAmt | 0 | 41803 |
| IRS990/PYGrantsAndSimilarPaidAmt | 0 | 181465 |
| IRS990/PYInvestmentIncomeAmt | 0 | 831793 |
| IRS990/PYOtherExpensesAmt | 0 | 9504661 |
| IRS990/PYOtherRevenueAmt | 0 | 0 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 27904394 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | -1168095 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 20259959 |
| IRS990/PYTotalExpensesAmt | 0 | 29946085 |
| IRS990/PYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/PYTotalRevenueAmt | 0 | 28777990 |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | -515244 |
| IRS990/RegularMonitoringEnfrcInd | 0 | 1 |
| IRS990/RelatedEntityInd | 0 | 0 |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | 0 |
| IRS990/ReportInvestmentsOtherSecInd | 0 | 1 |
| IRS990/ReportLandBuildingEquipmentInd | 0 | 1 |
| IRS990/ReportOtherAssetsInd | 0 | 1 |
| IRS990/ReportOtherLiabilitiesInd | 0 | 1 |
| IRS990/ReportProgramRelatedInvstInd | 0 | 0 |
| IRS990/SavingsAndTempCashInvstGrp/BOYAmt | 0 | 791618 |
| IRS990/SavingsAndTempCashInvstGrp/EOYAmt | 0 | 830200 |
| IRS990ScheduleB/ContributorInformationGrp/ContributorBusinessName/BusinessNameLine1 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorNum | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine1 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine2 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/City | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/State | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/ZIPCode | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/TotalContributionsAmt | 0 | RESTRICTED |
| IRS990/ScheduleBRequiredInd | 0 | 1 |
| IRS990ScheduleC/AgreeCarryoverPriorYearInd | 0 | 0 |
| IRS990ScheduleC/DuesAssessmentsAmt | 0 | 26530009 |
| IRS990ScheduleC/NonDeductibleLbbyngPltclCYAmt | 0 | 86821 |
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