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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
APNIC-measured end-user deployment.
Clean prefixes (valid RPKI + IRR, no mismatch).
Cumulative IPv4, IPv6, and ASN allocations to United States over time.
The largest autonomous systems registered to United States by IPv4 footprint.
| AS | Holder | IPv4 | Prefixes |
|---|---|---|---|
| AS749US | DNIC-AS-00749 - United States Department of Defense (DoD) | 227.5M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218M | 24,555 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,303 |
| AS721US | DNIC-ASBLK-00721-00726 - United States Department of Defense (DoD) |
United States against its land-border neighbours on IPv4, IPv6, AS numbers and per-capita density.
Share of announced address space covered by valid Route Origin Authorizations.
32,168 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,995 |
| AS701US | UUNET - Verizon Business | 43.6M | 994 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,354 |
| 512 |
| — |
| 2 |
| AS46879US | NCTCOG-911-ESINET-AS - North Central Texas Council of Governments | 512 | — | 2 |
| AS54820US | DN-TX - Diebold Nixdorf, Incorporated | 512 | — | 2 |
| AS54385US | TOLLESON - City of Tolleson | 512 | — | 2 |
| AS398193US | GCMCO - G. C. M. COMPUTERS, INC. | 512 | — | 2 |
| AS36462US | TGNA-KHOU - TEGNA Inc. | 512 | — | 2 |
| AS22617US | SACCOURT - Superior Court of California, County of Sacramento | 512 | 16 | 3 |
| AS396877US | VINTERCHANGE - Vinterchange, Inc | 512 | — | 2 |
| AS27634US | MICRODG-AS - Microdynamics Corporation | 512 | — | 2 |
| AS19131US | LIVESS-01 - Living Essentials, LLC | 512 | — | 2 |
| AS63248US | USRC-AS63248 - U.S. RENAL CARE, INC. | 512 | — | 2 |
| AS18952US | BVR-AS - Big Valley of Pomo Indians of the Big Valley Rancheria California | 512 | — | 2 |
| AS53575US | AUSTIN-COLLEGE - Austin College | 512 | — | 2 |
| AS24865US | SMOTI-AS Keith Mitchell | 512 | — | 1 |
| AS31823US | ITIVITI-USA - Itiviti USA, Inc. | 512 | — | 2 |
| AS27226US | HARBOURVEST - Harbourvest Partners, LLC | 512 | — | 2 |
| AS11789US | SURFAIRWIRELESS-IN-03 - Surf Air Wireless, LLC | 512 | — | 1 |
| AS393584US | NANTCLOUDSERVICESLLC - NantCloud Services LLC | 512 | — | 2 |
| AS19622US | GHI301PENOBSCOT - Genomic Health, Inc. | 512 | — | 2 |
| AS394656US | CPA-AS1 - Canaveral Port Authority | 512 | — | 2 |
| AS40907US | ATL-699-40907 - Access TeleCare, LLC | 512 | 2 | 4 |
| AS1446US | TPC-1 - Tutor Perini Corporation | 512 | — | 2 |
| AS46802US | GLADIATOR-TECH - Gladiator Technologies, LLC | 512 | — | 2 |
| AS32344US | CSD99 - Community High School District 99 | 512 | — | 2 |
| AS32052US | SULLCROM - SULLCROM | 512 | — | 2 |
| AS18833US | ASHP-NETWORK - American Specialty Health Plans of CA, Inc. | 512 | — | 2 |
| AS40267US | PCTI - Passaic County Technical Institute | 512 | 16 | 3 |
| AS397937US | TGNA-WTHR - TEGNA Inc. | 512 | — | 2 |
| AS36152US | DAKTRONICS-CORP-ASN-63-85-214-0 - Daktronics | 512 | 256 | 3 |
| AS18598US | CEQUINT-INC - Transaction Network Services, Inc. | 512 | — | 2 |
| AS401075US | SKY-SPARK - Skyspark Hosting LLC | 512 | 256 | 3 |
| AS47016US | EXTRON-ELECTRONICS - Extron Electronics | 512 | — | 2 |
| AS394025US | ATHOME - At Home Stores LLC | 512 | — | 2 |
| AS396654US | VRSN-AC50-340 - VeriSign Global Registry Services | 512 | — | 2 |
| AS393787US | CEG - Citizens Energy Group | 512 | — | 2 |
| AS62733US | SOLANOCOUNTY - Solano County | 512 | — | 2 |
| AS11640US | GROUP-ONE-TRADING - Group One Trading LLC | 512 | — | 2 |
| AS396023US | DEMO-TEWKS - Demoulas Super Markets, Inc. | 512 | — | 2 |
| AS13516US | CTCA1336 - Cancer Treatment Centers of America, Inc. | 512 | — | 2 |
| AS22921US | SEACNET - SEAC Network Solutions LLC | 512 | — | 2 |
| AS19810US | ASNBLK-VTLA2 - NTT Global Networks Incorporated | 512 | — | 2 |
| AS23156US | VG-NET-01 - The Vincit Group | 512 | — | 2 |
| AS62507US | CHV-COH - City of Hampton, Virginia | 512 | — | 2 |
| AS10905US | MTVI-AS - Mobile Technology Ventures Inc | 512 | — | 2 |
| AS401879US | RACKNODE-AS - RackNode | 512 | 257 | 4 |
| AS393236US | OCTANNER - O. C. TANNER COMPANY | 512 | — | 2 |
| AS11932US | EDF-MAN-CAPITAL-INC - Breakwater | 512 | — | 2 |