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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) | 227.4M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 217.9M | 24,372 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 643 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,322 |
| 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.
32,235 autonomous systems registered to United States. Click an AS for detail.
| 72.9M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,906 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.9M | 2,006 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.7M | 4,275 |
| ARYAKA-ARIN - Aryaka Networks, Inc. |
| 35.6K |
| 3 |
| 142 |
| AS36224US | HCLTA94085 - HCL AMERICA INC | 35.6K | 2 | 97 |
| AS26223US | SILVERSTAR-TELEPHONE - Silver Star Communications | 35.6K | 65.6K | 61 |
| AS62887US | WHITESKY-COMMUNICATIONS - WhiteSky Communications, LLC. | 35.6K | 274 | 58 |
| AS26425US | EXELON-CORPORATION - Exelon Corporation | 35.8K | — | 28 |
| AS26844US | PACTIV - Pactiv LLC | 35.8K | — | 6 |
| AS32472US | LEXIS2-AS - RELX inc. | 35.8K | — | 10 |
| AS40749US | CDELIGHTBAND - CLARKSVILLE DEPARTMENT OF ELECTRICITY | 35.8K | — | 19 |
| AS36001US | BERTRAM-COMMUNICATIONS-LLC - Bertram Communications LLC | 35.8K | 262.1K | 15 |
| AS30383US | GENERAL-MOTORS-CORPORATION - General Motors LLC | 36.1K | 1K | 131 |
| AS29930US | TWRS-CBB - Towerstream I, Inc. | 36.1K | — | 11 |
| AS11790US | RANDOMHOUSE - Random House, Inc. | 36.1K | — | 18 |
| AS17223US | DATABANK-LATISYS - Latisys-Chicago, LLC | 36.1K | 65.5K | 32 |
| AS397142US | FORT-COLLINS-CONNEXION - City of Fort Collins | 36.1K | 67.6K | 23 |
| AS396001US | TACO-396001 - City of Tacoma | 36.1K | — | 12 |
| AS27066US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | 36.4K | 8 | 120 |
| AS11620US | SUCCEED-NET - Succeed.Net | 36.4K | — | 28 |
| AS393856US | WGELD-ASN - City of Westfield (Gas & Electric Light Department) | 36.4K | — | 40 |
| AS33619US | AMD-MARKHAM - Advanced Micro Devices, Inc. | 36.4K | — | 95 |
| AS19905US | SECURITYSERVICES - Vercara, LLC | 36.4K | 26 | 158 |
| AS16567US | NETRIX-16567 - Netrix LLC | 36.4K | 65.5K | 41 |
| AS397731US | ELITEWORK-01 - EliteWork LLC | 36.4K | — | 11 |
| AS27553US | TELNET - Telnet Worldwide, Inc. | 36.4K | 65.5K | 8 |
| AS63448US | HOLSTON-1 - HOLSTON ELECTRIC COOPERATIVE | 36.6K | — | 31 |
| AS27087US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | 36.6K | — | 31 |
| AS13886US | CLOUD-SOUTH - Cloud South | 36.6K | — | 117 |
| AS22781US | STRTEC - Strong Technology, LLC. | 36.6K | 13.3K | 37 |
| AS16582US | NEXTLEVELINTERNET - NEXT LEVEL INTERNET, INC. | 36.6K | — | 38 |
| AS20248US | TAKE2 - Take 2 Hosting, Inc. | 36.9K | — | 5 |
| AS36007US | KAMATERA - Kamatera, Inc. | 36.9K | 19 | 160 |
| AS26253US | SCINTERNET - South Central Communications, Inc. | 36.9K | 131.1K | 18 |
| AS10348US | HTDC - High Technology Development Corporation | 36.9K | — | 2 |
| AS7078US | MONMOUTH - Monmouth Internet Corp | 36.9K | 65.5K | 4 |
| AS19115US | CHARTER-19115-DC - Charter Communications LLC | 36.9K | 577 | 57 |
| AS26472US | CHIBARDUN-TEL - Mosaic Telecom | 36.9K | — | 5 |
| AS18632US | VOLCANO-VISION - Volcano Vision, Inc. | 36.9K | — | 77 |
| AS10823US | NETCARRIER - NetCarrier, Inc. | 36.9K | 65.5K | 21 |
| AS11114US | WINTEK-CORP - Wintek Corporation | 37.1K | 131.1K | 9 |
| AS11608US | ATG-11608 - Accretive Networks | 37.1K | 1 | 44 |
| AS25649US | AYERA-AS - AYERA TECHNOLOGIES, INC. | 37.1K | 65.5K | 25 |
| AS1255US | SMITHCOLLEGE-AS - Smith College | 37.1K | — | 14 |
| AS11704US | VTCI - Valley Telephone Cooperative, Inc. | 37.1K | — | 14 |
| AS6646US | AETNA - Aetna, Inc. | 37.1K | — | 20 |
| AS19254US | KOCH-INDUSTRIES - Koch Industries, Inc. | 37.4K | — | 41 |
| AS20477US | RANDOLPHTELEPHONE - Randolph Telephone Company | 37.4K | — | 22 |
| AS36092US | CENTENE - Centene Corporation | 37.4K | — | 47 |
| AS19969US | JOESDATACENTER - CyberCloud Professionals LLC | 37.4K | 65.5K | 22 |