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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. | 218.2M | 25,766 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,308 |
| 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.
32,243 autonomous systems registered to United States. Click an AS for detail.
| 73M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,898 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,998 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,359 |
| 512 |
| — |
| 2 |
| AS393716US | INTRADA-AS000 - Intrada Technologies, Inc | 512 | — | 1 |
| AS22151US | BREAN-CAPITAL - Brean Murray & Co., Inc. | 512 | — | 2 |
| AS46139US | METASOURCE - Metasource LLC | 512 | — | 2 |
| AS22615US | MONROECOUNTYCOMMSCH - Monroe County Community School Corporation | 512 | — | 2 |
| AS63166US | TGNA-WHAS - TEGNA Inc. | 512 | — | 2 |
| AS19858US | GENSLER - M. Arthur Gensler Jr. & Associates, Inc. | 512 | — | 2 |
| AS399828US | COKER-CAMPUS-01 - Coker University | 512 | — | 1 |
| AS63047US | KMHA - Konica Minolta Healthcare Americas, Inc. | 512 | — | 2 |
| AS40056US | WGLV-20 - Westgate Resorts Ltd | 512 | — | 2 |
| AS13478US | BEAGLE - Beagle Networks | 512 | — | 2 |
| AS396086US | HAMPSHIRE-CAMPUS - Hampshire College | 512 | — | 2 |
| AS393764US | APOG-HUNTINGDON-COLLEGE - Apogee Telecom Inc. | 512 | — | 2 |
| AS22228US | TOKYO-ELECTRON-US-HOLDINGS-INC - Tokyo Electron U.S. Holdings, Inc. | 512 | — | 2 |
| AS29746US | S3PL-ASN - S3 Partners LLC | 512 | — | 2 |
| AS397292US | GIGABEAM-INTERNET - Symplified Technologies LLC | 512 | — | 1 |
| AS16384US | SMCVT - St Michael's College | 512 | — | 2 |
| AS397098US | ISLANDCLOUD - Island I.T. Solutions, LLC | 512 | — | 2 |
| AS33405US | HESS - Hess Corporation | 512 | — | 1 |
| AS394803US | ANSI-ASN - American National Standards Institute | 512 | — | 2 |
| AS393668US | STATEFAIRCC - State Fair Community College | 512 | 32 | 19 |
| AS13460US | EARTHCAM - EarthCam, Inc. | 512 | 2 | 4 |
| AS21969US | FSA-AMH-AS01 - Firstsource Advantage LLC | 512 | — | 2 |
| AS22713US | CAC-HQ2 - Credit Acceptance Corporation | 512 | — | 1 |
| AS22502US | LABCORP-HOLDINGS - Laboratory Corporation of America | 512 | — | 2 |
| AS398459US | ROGUECU-ORG-01 - Rogue Credit Union | 512 | — | 2 |
| AS400034US | CIRHLD - Circuit Holdings | 512 | — | 2 |
| AS32428US | BELZ-INVESTCO - BELZ ENTERPRISES | 512 | — | 2 |
| AS397887US | HOSTMYCALLS-01 - HostMyCalls | 512 | — | 2 |
| AS27001US | DAYSINNHOTELCIRCLE-GUEST-INTERNET - Days Inn Hotel Circle Sea World | 512 | — | 1 |
| AS398786US | GO-DADDY-COM-LLC - GoDaddy.com, LLC | 512 | — | 2 |
| AS62645US | SNAPNAMES - SNAPNAMES.COM, INC. | 512 | 1 | 2 |
| AS994US | AS-VIIRTUE - Viirtue LLC | 512 | — | 2 |
| AS401493US | SUREPATH-AI - SurePath AI | 512 | — | 2 |
| AS46118US | CELANESE-US - Celanese International Corporation | 512 | — | 1 |
| AS401183US | STEGEMEYER-NET - James Stegemeyer, Sole Proprietorship | 512 | 16 | 3 |
| AS396220US | AS-SNOPUD - Public Utility District No. 1 of Snohomish County | 512 | — | 1 |
| AS402127US | TAKOYAKI-NET - Project Takoyaki Technologies | 512 | — | 2 |
| AS20397US | BOXLAKE - Box Lake Networks, Inc. | 512 | — | 2 |
| AS36171US | STRASMORE - Strasmore, Inc. | 512 | 1 | 3 |
| AS46183US | MARYANNLIEBERTINC - MARY ANN LIEBERT, INC | 512 | — | 2 |
| AS14207US | CSG-OD2 - CSG Systems Inc. | 512 | — | 2 |
| AS393746US | MAXHOST-IO - Amazing Creations and More LLC | 512 | 5 | 7 |
| AS20236US | BEAL-SERVICE-CORPORATION - Beal Service Corporation | 512 | — | 2 |
| AS13969US | PMM-INC-AS - PROFESSIONAL MEDICAL MANAGEMENT, INC. | 512 | — | 2 |
| AS398298US | NETSTRATUM - Netstratum | 512 | — | 2 |
| AS36418US | HAP - HEALTH ALLIANCE PLAN OF MICHIGAN | 512 | — | 1 |