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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 | 3,138 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,171 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,241 |
| 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 | 3,667 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,951 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,368 |
| 512 |
| 2 |
| 4 |
| AS11184US | EG-USEAST - EXPEDIA, INC | 512 | — | 2 |
| AS6304US | STAIRWELL - Stairwell, Inc | 512 | 256 | 3 |
| AS40263US | BCS-1 - Bear Cloud Solutions, Inc. | 512 | 1 | 3 |
| AS393414US | KIRKLAND-ELLIS-UK - Kirkland & Ellis LLP | 512 | — | 2 |
| AS19961US | STARGAS-NET-1 - Star Gas Partners, LP | 512 | — | 2 |
| AS400419US | CNEHS - CARE NEW ENGLAND HEALTH SYSTEM | 512 | — | 2 |
| AS39239US | PHOENIXNAP-ES PHOENIX NAP, LLC. | 512 | 257 | 4 |
| AS397365US | AS190901 - Blade Broadband | 512 | — | 1 |
| AS46283US | SEARCY-MAIN-CAMPUS - Harding University, Inc. | 512 | — | 2 |
| AS36568US | WDSU-TV - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS40939US | P2PPSR - Project Babbage | 512 | 256 | 2 |
| AS400503US | DAN-SMITH-LLC - Dan Smith LLC | 512 | 32 | 4 |
| AS36860US | BANCFIRST - BancFirst | 512 | — | 2 |
| AS393485US | TIFFANYCO - Tiffany and Company | 512 | — | 2 |
| AS395974US | COMCAST-MES - Comcast Cable Communications, LLC | 512 | — | 2 |
| AS397555US | TGNA-KWES - TEGNA Inc. | 512 | — | 2 |
| AS397457US | MSC-TC - MSC Inc | 512 | 1 | 2 |
| AS398097US | WINTRUST-FINANCIAL-CORPORATION-EG-IL - Wintrust Financial Corporation | 512 | — | 2 |
| AS396933US | TELWARE-EAST01 - TelWare Corporation | 512 | — | 2 |
| AS36279US | MISERI-COLLEGE-1 - Misericordia University | 512 | — | 2 |
| AS393366US | CENTRA-5 - Centra Health, Inc. | 512 | — | 2 |
| AS401500US | KARRIER-ONE-01 - Karrier One Inc. | 512 | — | 1 |
| AS26276US | TIMKEN-USA - The Timken Company | 512 | — | 2 |
| AS63325US | CARRIAGESERVICESAS - Carriage Services, Inc. | 512 | — | 2 |
| AS25743US | EGRMP-NET - EGRMP | 512 | — | 2 |
| AS12238US | AECOM - AECOM | 512 | — | 1 |
| AS19857US | BEFCORP - Bob Evans Farms, Inc. | 512 | — | 2 |
| AS13470US | NAVAJOCOUNTYAZ - NAVAJO COUNTY | 512 | — | 2 |
| AS398380US | DCH-ASN-01 - Driscoll Children's Hospital | 512 | — | 2 |
| AS11720US | IBCP - Independent Bank Corporation | 512 | — | 2 |
| AS39971US | BELL-IT-SERVICES - Bell IT Services, Inc. | 512 | 1 | 3 |
| AS30009US | FAPS - First American Payment Systems Inc. | 512 | — | 2 |
| AS30474US | IMPRIVATA-DC - Imprivata Inc | 512 | — | 2 |
| AS11121US | FIRSTDATACORP-DB - Fiserv Solutions, LLC | 512 | — | 2 |
| AS20163US | SUNMED - Sunrise Medical, Inc. | 512 | — | 2 |
| AS36178US | STEPHENGOULD-CORP - Stephen Gould Corporation | 512 | — | 1 |
| AS63376US | TOUCHTONE-CUSTS - TouchTone Communications | 512 | — | 2 |
| AS40120US | SE-BR-AS-01 - TAC Americas, Inc. | 512 | — | 1 |
| AS397808US | FAXAGE-01 - FAXAGE | 512 | — | 2 |
| AS40656US | COMETC1 - Communications Etc., Inc. | 512 | 65.5K | 3 |
| AS53393US | LGCNS-AS2 - LG CNS America Inc. | 512 | — | 2 |
| AS33415US | PERKINSCOIE-ASN - Perkins Coie, LLP | 512 | — | 2 |
| AS398809US | OSW - One Spa World LLC | 512 | — | 1 |
| AS3425US | ESNET-AS - ESnet | 512 | — | 2 |
| AS13405US | FEATHER-IT-NET - Feather IT LLC | 512 | 256 | 3 |
| AS62756US | DOTBLOCK-2 - HostRocket.com, Inc. | 512 | 256 | 2 |