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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. | 217.9M | 23,731 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,300 |
| 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.
32,144 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 | 3,838 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,995 |
| AS701US | UUNET - Verizon Business | 43.6M | 995 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,313 |
| — |
| — |
| 0 |
| AS738US | AFCONC-BLOCK2-AS - Air Force Systems Networking | — | — | 0 |
| AS3116US | PPCI - Point to Point Communications, Inc. | — | — | 0 |
| AS3080US | CITI14 - Citigroup Inc. | — | — | 0 |
| AS3009US | SPRINT-MRN-BLOCK - U.S. Sprint | — | — | 0 |
| AS536US | DNIC-AS-00536 - Headquarters, USAISC | — | — | 0 |
| AS2759US | MCI-NETC - Verizon Business | — | — | 0 |
| AS2741US | DNIC-AS-02741 - United States Department of Defense (DoD) | — | — | 0 |
| AS2009US | BT-CLOUD-CONNECT - INFONET Services Corporation | — | — | 0 |
| AS2644US | SMARTS-AS - System Management ARTS, Inc. | — | — | 0 |
| AS53300US | EMBARK-CORPORATION - Embark Corp | — | — | 0 |
| AS53295US | ROVI - Rovi Corporation | — | — | 0 |
| AS677US | ASU-AS - Arizona State University | — | — | 0 |
| AS2938US | SPRINT-MRN - U.S. Sprint | — | — | 0 |
| AS46795US | AG-PARTNERS-LLC - AG PARTNERS LLC | — | — | 0 |
| AS46703US | SOFTLAYER-SEA01 - IBM Cloud | — | — | 0 |
| AS46977US | VIRTUSTREAM-US - Dell, Inc. | — | — | 0 |
| AS46570US | CBLT-INTEGRALINK - The Cobalt Group | — | — | 0 |
| AS54409US | BDO USA LLP - BDO USA | — | — | 0 |
| AS54408US | FICOH - First Insurance Company of Hawaii | — | — | 0 |
| AS54061US | TBBK-INTERNET - The Bancorp Incorporated | — | — | 0 |
| AS54908US | DEVONCORP2 - Devon Energy Corporation | — | — | 0 |
| AS53422US | BRIVOSYSTEMS - Brivo Systems, LLC | — | — | 0 |
| AS53378US | MINDBODYONLINE - MindBody, Inc. | — | — | 0 |
| AS20401US | HOSTWAY-1 - Ntirety, Inc. | — | — | 0 |
| AS29760US | UNITI-M2 - Uniti Fiber Holdings Inc. | — | — | 0 |
| AS29738US | DATABANK-PIT - DataBank Holdings, Ltd. | — | — | 0 |
| AS27432US | WILSON-LEARNING - Wilson Learning Corporation | — | — | 0 |
| AS26099US | IAS-1 - Institute for Advanced Study | — | — | 0 |
| AS27084US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | — | — | 0 |
| AS27063US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | — | — | 0 |
| AS21524US | WSP - Parsons Brinckerhoff Inc. | — | — | 0 |
| AS21583US | HOUSTON-COLO - Vonage Holdings, Inc. | — | — | 0 |
| AS20202US | CRUCIALP - CRUCIALP LLC | — | — | 0 |
| AS20104US | GOTO-OPS-AS - Goto Group, Inc. | — | — | 0 |
| AS19829US | SMILEBRANDS-PRIMARY - Smile Brands Group Inc | — | — | 0 |
| AS22722US | SEVONE - IBM | — | — | 0 |
| AS23287US | WBD-AS23287 - Discovery Communications | — | — | 0 |
| AS23270US | CHARTER-23270-NA - Charter Communications LLC | — | — | 0 |
| AS22963US | AFINITI-AI - Afiniti, INC. | — | — | 0 |
| AS23073US | PGI-AS-1 - PGI Solutions LLC | — | — | 0 |
| AS22430US | LSV-ADVISORS-LLC - LSV Advisors, L.L.C | — | — | 0 |
| AS22309US | ASN1 - Kitsap Credit Union | — | — | 0 |
| AS21875US | PICK-INTERNET - Sands River Wireless | — | — | 0 |
| AS6443US | EMANON - Emanon Service Corporation | — | — | 0 |
| AS35848US | GRIZZLINK - 20C, LLC | — | 16 | 1 |
| AS1016US | TECHNOTIC-SPORTS - Technotic Sports, LLC | — | — | 0 |