Nonprofit · EIN 54-1860956
AMERICAN REGISTRY FOR INTERNET NUMBERS LTD
Also known as ARIN
Tax-exempt · CENTREVILLE, VA 20120
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990 | $31,661,623 | $31,941,906 | -$280,283 | $54,229,033 | $26,321,480 | $27,907,553 |
| December 31, 2024 | 990 | $29,435,380 | $29,950,624 | -$515,244 | $45,236,043 | $18,965,460 | $26,270,583 |
| December 31, 2023 | 990 | $28,777,990 | $29,946,085 | -$1,168,095 | $45,084,818 | $19,769,546 | $25,315,272 |
Financial details: 990 for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $118,500
- Program service revenue
- $29,925,731
- Investment income
- $1,617,392
- Net gain from sales of assets
- $138,868
- Other revenue
- $0
Expenses
- Grants and similar amounts paid
- $299,221
- Compensation of officers, directors and key employees
- $3,828,369
- Other salaries and wages
- $12,290,585
- Salaries, compensation and benefits (total)
- $21,627,441
- Professional fundraising fees
- $0
- Legal fees
- $150,574
- Accounting fees
- $67,199
- Occupancy
- $610,466
- Travel
- $1,135,526
- Depreciation
- $1,887,595
Balance sheet and other
- Total assets, start of year
- $45,236,043
- Total assets, end of year
- $54,229,033
- Total liabilities, end of year
- $26,321,480
- Net assets, end of year
- $27,907,553
- Land, buildings and equipment
- $5,741,650
- Publicly traded securities
- $32,979,378
- Net assets without donor restrictions
- $27,907,553
- Gross receipts
- $39,710,694
- Employees
- 108
- Volunteers
- 32
- Year formed
- 1997
- State of legal domicile
- VA
From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.
Officers, directors and key employees
As listed on the 990 for the year ended December 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| JOHN CURRAN | PRESIDENT AND CEO Trustee or director, Officer | 40 | $607,647 | $77,989 |
| RICHARD JIMMERSON | CHIEF OPERATING OFFICER Officer | 40 | $448,899 | $89,505 |
| BRIAN KIRK | CHIEF FINANCIAL OFFICER Officer | 40 | $413,858 | $74,422 |
| JOHN SWEETING | CHIEF EXPERIENCE OFFICER Officer | 40 | $385,207 | $77,227 |
| MICHAEL ABEJUELA | GENERAL COUNSEL Officer | 40 | $391,156 | $66,587 |
| ERIN ALLIGOOD | CHIEF HUMAN RESOURCES OFFICER Officer | 40 | $358,145 | $86,104 |
| MARK KOSTERS | CHIEF TECHNOLOGY OFFICER Key employee | 40 | $353,142 | $86,177 |
| EINAR BOHLIN | VP, GOVT AFFAIRS Highest-paid employee | 40 | $308,372 | $70,236 |
| ROBERT JOHNSON | CHIEF INFORMATION SECURITY OFFICER Highest-paid employee | 40 | $297,966 | $80,412 |
| LESLIE DANIELLO NOBILE | SR DIRECTOR Highest-paid employee | 40 | $324,023 | $45,818 |
| REGINALD FORSTER | DIRECTOR, OPERATIONS Key employee | 40 | $279,361 | $69,476 |
| DEBRA MARTIN | DIRECTOR, ENG PROGRAM MGMT Highest-paid employee | 40 | $271,021 | $64,122 |
| PETER TOSCANO | DIRECTOR, ISS Highest-paid employee | 40 | $272,106 | $62,543 |
| NANCY CARTER | TREASURER, CHAIR(AS OF 10/2025) Trustee or director, Officer | 12 | $0 | $0 |
| BILL SANDIFORD | CHAIR (UNTIL 10/2025), BOARD TRUSTEE Trustee or director, Officer | 15 | $0 | $0 |
7 more people on this return
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| TINA MORRIS | VICE CHAIR Trustee or director, Officer | 10 | $0 |
| CHRIS TACIT | SECRETARY Trustee or director, Officer | 9 | $0 |
| DAN ALEXANDER | BOARD TRUSTEE Trustee or director | 6 | $0 |
| RON DA SILVA | BOARD TRUSTEE Trustee or director | 6 | $0 |
| PETER HARRISON | BOARD TRUSTEE Trustee or director | 10 | $0 |
| HANK KILMER | BOARD TRUSTEE Trustee or director | 8 | $0 |
| ROBERT SEASTROM | BOARD TRUSTEE Trustee or director | 10 | $0 |
990 for the year ended December 31, 2024: 21 people
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| JOHN CURRAN | PRESIDENT AND CEO Trustee or director, Officer | 40 | $617,621 | $76,850 |
| RICHARD JIMMERSON | COO Officer | 40 | $418,371 | $88,995 |
| BRIAN KIRK | CFO Officer | 40 | $401,282 | $73,823 |
| JOHN SWEETING | CXO Officer | 40 | $364,462 | $76,656 |
| MARK KOSTERS | CTO Key employee | 40 | $343,913 | $87,981 |
| MICHAEL ABEJUELA | GENERAL COUNSEL Officer | 40 | $369,155 | $56,652 |
| ERIN ALLIGOOD | CHRO Officer | 40 | $338,220 | $85,176 |
| EINAR BOHLIN | VP, GOVT AFFAIRS Highest-paid employee | 40 | $298,383 | $70,330 |
| ROBERT CHRISTIAN JOHNSON | CISO Highest-paid employee | 40 | $282,560 | $78,899 |
| REGINALD FORSTER | DIRECTOR, OPERATIONS Key employee | 40 | $269,309 | $68,415 |
| DEBRA MARTIN | DIRECTOR, ENG PROGRAM MANAGEMENT Highest-paid employee | 40 | $262,883 | $63,259 |
| GARTH DUBIN | DIRECTOR, SOFTWARE ENGINEERING Highest-paid employee | 40 | $269,180 | $56,388 |
| PETER TOSCANO | DIRECTOR, ISS Highest-paid employee | 40 | $263,326 | $61,742 |
| BILL SANDIFORD | CHAIR Trustee or director, Officer | 15 | $0 | $0 |
| TINA MORRIS | VICE CHAIR Trustee or director, Officer | 4 | $0 | $0 |
| NANCY CARTER | TREASURER Trustee or director, Officer | 10 | $0 | $0 |
| PETER HARRISON | BOARD TRUSTEE Trustee or director | 10 | $0 | $0 |
| ROBERT SEASTROM | BOARD TRUSTEE Trustee or director | 10 | $0 | $0 |
| HANK KILMER | BOARD TRUSTEE Trustee or director | 8 | $0 | $0 |
| DAN ALEXANDER | BOARD TRUSTEE Trustee or director | 6 | $0 | $0 |
| CHRIS TACIT | BOARD TRUSTEE Trustee or director | 7 | $0 | $0 |
990 for the year ended December 31, 2023: 20 people
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| JOHN CURRAN | PRESIDENT AND CEO Trustee or director, Officer | 40 | $595,651 | $75,417 |
| RICHARD JIMMERSON | CHIEF OPERATING OFFICER (COO) Officer | 40 | $404,176 | $87,222 |
| BRIAN KIRK | CHIEF FINANCIAL OFFICER (CFO) Officer | 40 | $387,457 | $72,639 |
| JOHN SWEETING | CHIEF CUSTOMER OFFICER (CCO) Officer | 40 | $349,069 | $75,629 |
| MICHAEL ABEJUELA | GENERAL COUNSEL Officer | 40 | $356,660 | $65,299 |
| MARK KOSTERS | CHIEF TECHNOLOGY OFFICER (CTO) Key employee | 40 | $327,281 | $89,034 |
| ERIN ALLIGOOD | CHIEF HR OFFICER (CHRO) Officer | 40 | $323,191 | $87,610 |
| EINAR BOHLIN | VP, GOVERNMENT AFFAIRS DEPT Highest-paid employee | 40 | $301,991 | $79,598 |
| ROBERT JOHNSON | CHIEF IT OFFICER (CISO) Highest-paid employee | 40 | $267,561 | $76,959 |
| MAUREEN SEILER AS OF 0823 | DIR, SOFTWARE INTEGRATION Highest-paid employee | 40 | $244,789 | $76,383 |
| LESLIE DANIELLO NOBILE | SR DIR, TRUST & PUBIC SAFETY Highest-paid employee | 40 | $242,089 | $73,476 |
| REGINALD FORSTER | DIR. OF OPER. (AS OF 08/23) Key employee | 40 | $246,898 | $68,586 |
| PETER TOSCANO AS OF 0823 | DIRECTOR, ISS Highest-paid employee | 40 | $243,838 | $60,530 |
| BILL SANDIFORD | CHAIRMAN Trustee or director, Officer | 12 | $0 | $0 |
| TINA MORRIS | VICE CHAIR Trustee or director, Officer | 4 | $0 | $0 |
| NANCY CARTER | TEASURER Trustee or director, Officer | 10 | $0 | $0 |
| HANK KILMER | TRUSTEE Trustee or director | 8 | $0 | $0 |
| ROBERT SEASTROM | TRUSTEE Trustee or director | 10 | $0 | $0 |
| PETER HARRISON | TRUSTEE Trustee or director | 10 | $0 | $0 |
| BRAM ABRAMSON | TRUSTEE Trustee or director | 6 | $0 | $0 |
Address and contacts
- Address (IRS master file)
- PO BOX 232290, CENTREVILLE, VA 20120-8290
- In care of
- % BRIAN KIRK
- Principal officer (990 for 2025)
- JOHN CURRAN, PO BOX 232290, CENTREVILLE, VA 20120
- Signed the 990
- JOHN CURRAN, PRESIDENT & CEO
- Phone
- (703) 227-0660
- Website
- WWW.ARIN.NET
- Return prepared by
- CLIFTONLARSONALLEN LLP
Mission
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.
Program accomplishments
- 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.0
- REGISTRATION SERVICES INCLUDES COORDINATION AND MANAGEMENT OF IP ADDRESS SPACE AND ASN ALLOCATIONS AND ASSIGNMENTS, RESOURCE TRANSFERS, RECORD MAINTENANCE, REGISTRATION TRANSACTION INFORMATION (WHOIS), ROUTING INFORMATION (INTERNET ROUTING REGISTRY), AND REVERSE DNS. ARIN ALLOCATES AND ASSIGNS INTERNET NUMBER RESOURCES TO INTERNET SERVICE PROVIDERS AND END USERS WITHIN ITS SERVICE REGION.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.0
What it must file and when
IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | December 31, 2025 | May 15, 2026 | 990 on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990 on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990 on file |
IRS record
- EIN
- 54-1860956
- Tax-exempt status
- 501(c)(6): Business league or chamber of commerce
- Donations deductible
- No
- Exempt since
- 1997
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Assets (IRS master file)
- $54,229,033
- Income (IRS master file)
- $39,710,694
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | December 2025 | $31,661,623 | $31,941,906 | $54,229,033 | XML |
| 990 | December 2024 | $29,435,380 | $29,950,624 | $45,236,043 | XML |
| 990 | December 2023 | $28,777,990 | $29,946,085 | $45,084,818 | XML |
| 990 | December 2022 | $25,380,037 | $26,066,640 | $42,788,821 | IRS |
| 990 | December 2021 | – | – | – | IRS |
| 990 | December 2020 | – | – | – | IRS |
| 990 | December 2018 | – | – | – | IRS |
990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 54-1860956).
Questions about AMERICAN REGISTRY FOR INTERNET NUMBERS LTD
- What is the EIN of AMERICAN REGISTRY FOR INTERNET NUMBERS LTD?
- The employer identification number (EIN) of AMERICAN REGISTRY FOR INTERNET NUMBERS LTD is 54-1860956.
- Is AMERICAN REGISTRY FOR INTERNET NUMBERS LTD tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(6) since 1997.
- Are donations to AMERICAN REGISTRY FOR INTERNET NUMBERS LTD tax-deductible?
- No. The IRS master file says contributions to it are not deductible.
- Which annual return does AMERICAN REGISTRY FOR INTERNET NUMBERS LTD file?
- Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
- When is the next return of AMERICAN REGISTRY FOR INTERNET NUMBERS LTD due?
- The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did AMERICAN REGISTRY FOR INTERNET NUMBERS LTD last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended December 2025.
- Who is the principal officer of AMERICAN REGISTRY FOR INTERNET NUMBERS LTD?
- The 990 for the year ended December 31, 2025 names JOHN CURRAN.
- Who are the officers and directors of AMERICAN REGISTRY FOR INTERNET NUMBERS LTD?
- The 990 for the year ended December 31, 2025 lists 22 people; 13 received compensation from the organization, the highest $607,647 (JOHN CURRAN, PRESIDENT AND CEO).
- How much revenue does AMERICAN REGISTRY FOR INTERNET NUMBERS LTD have?
- On its 990 for the year ended December 31, 2025 it reported revenue of $31,661,623, expenses of $31,941,906 and total assets of $54,229,033 at year end.
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