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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) | 227.7M | 3,139 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,173 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,242 |
| 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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 383 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,668 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,949 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,365 |
| 512 |
| — |
| 2 |
| AS53575US | AUSTIN-COLLEGE - Austin College | 512 | — | 2 |
| AS32630US | PCI-DB - Patterson Companies, Inc. | 512 | — | 2 |
| AS396395US | ALLIANTINSURANCE - Alliant Insurance Services, Inc. | 512 | — | 2 |
| AS16981US | EMMIS-1 - Emmis Communications Corp. | 512 | — | 2 |
| AS17109US | CALITECH - Calitech | 512 | — | 2 |
| AS400441US | HYPHA-US1 - WINAC | 512 | — | 2 |
| AS11298US | KLD-ATX - Renew Data Corp. | 512 | — | 2 |
| AS400554US | STRICITY - Stricity LLC | 512 | 256 | 3 |
| AS395433US | D214 - Township High School District 214 | 512 | — | 2 |
| AS15025US | AS-BARTOW - City of Bartow | 512 | — | 2 |
| AS46739US | COLPIPE-EXT - Colonial Pipeline Company | 512 | — | 1 |
| AS32713US | GE-CI-LOUACCESS - General Electric Consumer Products | 512 | — | 2 |
| AS46879US | NCTCOG-911-ESINET-AS - North Central Texas Council of Governments | 512 | — | 2 |
| AS400703US | BB-7700 - Bankers' Bank | 512 | — | 2 |
| AS18952US | BVR-AS - Big Valley of Pomo Indians of the Big Valley Rancheria California | 512 | — | 2 |
| AS6305US | AENT-AS - Alliance Entertainment | 512 | — | 2 |
| AS21885US | AS1 - McLane Advanced Technologies, LLC | 512 | — | 1 |
| AS46695US | REGENT-ASN1 - Regent University | 512 | — | 2 |
| AS22567US | CWGS - CWGS ENTERPRISES, LLC | 512 | — | 2 |
| AS394510US | ZITEL-ASN-BLOCK01 - Zitel | 512 | — | 2 |
| AS402180US | APPLIED-TECHNOLOGY - Applied Technology Group Inc. | 512 | — | 1 |
| AS395216US | TELLIGEN - TELLIGEN | 512 | — | 2 |
| AS394153US | VELOXINET - Veloxinet | 512 | — | 2 |
| AS29864US | SPORTSMANS-WAREHOUSE - Sportsman's Warehouse, Inc. | 512 | — | 2 |
| AS54930US | TIER2-TECHNOLOGIES - Tier2 Technologies | 512 | 256 | 3 |
| AS35851US | BANKERSBANKOFKANSAS - Bankers' Bank of Kansas | 512 | — | 2 |
| AS30680US | FISCOM-COLO5-JAX-FL - Fidelity National Information Services, Inc. | 512 | — | 2 |
| AS36244US | SVEC - Shenandoah Valley Electric Cooperative | 512 | — | 1 |
| AS54230US | COMMERCIALCOMMUNICATIONSINC - Commercial Communications, Inc. | 512 | — | 2 |
| AS36209US | TGNA-WKYC - TEGNA Inc. | 512 | — | 2 |
| AS16999US | WFSCORP - World Fuel Services Corporation | 512 | — | 2 |
| AS19810US | ASNBLK-VTLA2 - NTT Global Networks Incorporated | 512 | — | 2 |
| AS393977US | GSB - Great Southern Bank | 512 | — | 2 |
| AS394376US | CAMTECH-BROADBAND - CamTech Broadband | 512 | — | 1 |
| AS27226US | HARBOURVEST - Harbourvest Partners, LLC | 512 | — | 2 |
| AS398949US | KISSUSA-NY - KISS NAIL PRODUCTS, INC | 512 | — | 2 |
| AS394918US | TBI-ASN-3 - TrueBlue, Inc. | 512 | — | 1 |
| AS36578US | WISN-TV - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS35872US | FREEDOM-PHL-AS - FreedomPay, Inc. | 512 | — | 2 |
| AS395737US | UFCU - University Federal Credit Union | 512 | — | 2 |
| AS14293US | UNI-EDGE - UniEdge Networks LLC | 512 | — | 2 |
| AS398756US | SUNYBROOME-AS - SUNY Broome Community College | 512 | — | 2 |
| AS401316US | PRAETORIAN - Praetorian Security, Inc. | 512 | — | 2 |
| AS14257US | EZ-NET - The Iserv Company, LLC | 512 | — | 2 |
| AS400798US | PITIX-INFRA - Pittsburgh Internet Exchange | 512 | 4.1K | 3 |
| AS54156US | CITY-OF-HUNTSVILLE - City of Huntsville | 512 | — | 2 |