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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 | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,661 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,361 |
| 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.
32,363 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 236 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,490 |
| — |
| — |
| 0 |
| AS26352US | SHIPCO-TRANSPORT - Shipco Transport | — | — | 0 |
| AS26393US | NORFOLK-IX-ROUTE-SERVERS - Richmond-IX Corporation | — | — | 0 |
| AS26491US | GEEKSTORAGE - GEEKSTORAGE.COM, LLC | — | — | 0 |
| AS26537US | FITCHRATINGS-NEWYORK - FITCHRATINGS | — | — | 0 |
| AS26568US | JADE - Jade Communications LLC | — | — | 0 |
| AS26570US | EXCALTECH-NOC - Excalibur Technology Corporation | — | — | 0 |
| AS26628US | RICHMOND-IX-ROUTE-SERVERS - Richmond-IX Corporation | — | — | 0 |
| AS26766US | INTERJ - INTERJ LLC | — | — | 0 |
| AS26816US | BLACKROCK-FINANCIAL-MANAGEMENT - BlackRock Financial Management, Inc. | — | — | 0 |
| AS26888US | UPLOGON-AS - U.P. Logon | — | — | 0 |
| AS27058US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | — | — | 0 |
| AS27059US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | — | — | 0 |
| AS27076US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | — | — | 0 |
| AS27078US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | — | — | 0 |
| AS27106US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | — | — | 0 |
| AS27107US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | — | — | 0 |
| AS27111US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | — | — | 0 |
| AS27122US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | — | — | 0 |
| AS27129US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | — | — | 0 |
| AS27143US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | — | — | 0 |
| AS27147US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | — | — | 0 |
| AS27320US | ISC-F-AS - Internet Systems Consortium, Inc. | — | — | 0 |
| AS27342US | CAHILL01 - Cahill Gordon & Reindel | — | — | 0 |
| AS27362US | VC-01-478 - Veracrest Limited Co. | — | — | 0 |
| AS27407US | EQUINIX-CX-CL - Equinix, Inc. | — | — | 0 |
| AS27420US | MCALLEN-DATA-CENTER2 - McAllen Data Center, LLC | — | — | 0 |
| AS27433US | EQUINIX-CX-KA - Equinix, Inc. | — | — | 0 |
| AS27489US | CIRQUEANALYTICS - Cirque Analytics | — | — | 0 |
| AS27492US | RGC - Rochling Glastic Composites | — | — | 0 |
| AS27505US | AZT-CLOUD - CloudDDoS | — | — | 0 |
| AS27509US | DMG-AS-1 - Delta Media Group, Inc | — | — | 0 |
| AS27567US | GRAY-AS - Gray & Company, Inc. | — | — | 0 |
| AS27588US | BOARDOFPENSIONS-EXPRESS-01 - The Board of Pensions of the Presbyterian Church (USA) | — | — | 0 |
| AS29791US | VOXEL-DOT-NET - Internap Holding LLC | — | — | 0 |
| AS29846US | WIREDWATERS-165 - Wired Waters, Inc. | — | — | 0 |
| AS29920US | ALASKA-AIRGROUP-SEA - Alaska Airlines, Inc. | — | — | 0 |
| AS29932US | REVSPRING-PRIM - Revspring Inc. | — | — | 0 |
| AS30023US | CYRUSONE-CIN - CyrusOne LLC | — | — | 0 |
| AS30285US | CITIGROUP-BANAMEX - Citigroup Inc. | — | — | 0 |
| AS30322US | BIRCH-COV - Fusion, LLC | — | — | 0 |
| AS30329US | SPARKPLUG-SOUTHWEST-LLC - Sparkplug Southwest, LLC. | — | — | 0 |
| AS30399US | HOSTENGINE - Host-Engine.com | — | — | 0 |
| AS30520US | NUANCE-SOMERVILLE - Microsoft Corporation | — | — | 0 |
| AS30557US | AAUW - American Association of University Women | — | — | 0 |
| AS30575US | MSFT-30575 - Microsoft Corporation | — | — | 0 |
| AS30584US | FANNIE-MAE-INTERNET-VPN - Fannie Mae | — | — | 0 |