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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
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. | 218.1M | 24,630 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,307 |
| 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.
32,219 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 233 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 256 |
| — |
| 1 |
| AS402918US | SUPERSEND - SuperSend | 256 | — | 1 |
| AS396094US | PERPETUAL-STORAGE-INC - Perpetual Storage, Inc. | 256 | — | 1 |
| AS23037US | HCACA-RMCANNISTON-1 - Northeast Alabama Regional Medical Center | 256 | — | 1 |
| AS32612US | LOC-AS01 - Lyric Opera of Chicago | 256 | — | 1 |
| AS14879US | PARIS-AS - PARIS ACCESSORIES INC. | 256 | — | 1 |
| AS1428US | DRW-HOLDINGS - DRW Holdings, LLC | 256 | — | 1 |
| AS401114US | COLUMBIACOUNTYWI - Columbia County | 256 | — | 1 |
| AS401310US | PMTC-ASN - Palmer Mutual Telephone Company | 256 | 4.1K | 2 |
| AS1958US | NCRWIN1958 - NCR Voyix Corporation | 256 | — | 1 |
| AS402397US | 17SOLUTIONS-LLC - 17 | 256 | 1 | 2 |
| AS36033US | MOON-AS - Moon Capital Master Fund Ltd. | 256 | — | 1 |
| AS26741US | CEMC - CarolinaEast Medical Center | 256 | — | 1 |
| AS62939US | PINKBIKE-US-DC1 - Outside Interactive Canada Inc. | 256 | — | 1 |
| AS18619US | NUSOCLOUD-MO - NUSO | 256 | — | 1 |
| AS32788US | C75-NETWORKS - Coloblox Data Centers Inc | 256 | — | 1 |
| AS396335US | LRHS-LAKELAND-FL - Lakeland Regional Health Systems, Inc | 256 | — | 1 |
| AS22564US | TRABON-SOLUTIONS - Trabon Solutions | 256 | — | 1 |
| AS54248US | GCPSNET - School Board of Gadsden County | 256 | — | 1 |
| AS20420US | DV - Digital Ventures, LLC | 256 | 2 | 3 |
| AS399432US | AS-MS-78058 - Blue Cross Blue Shield of Illinois or Blue Cross Blue Shield of Texas | 256 | — | 1 |
| AS16588US | POLITICO - Politico, LLC | 256 | — | 1 |
| AS398366US | LINKUP - Linkup Communications Corporation | 256 | — | 1 |
| AS22614US | IGA-ASN-01 - Legislative Services Agency | 256 | — | 1 |
| AS46081US | FOOD-DONATION-CONNECTION - Food Donation Connection | 256 | — | 1 |
| AS26589US | NYSERDA - New York State Energy Research and Development Authority | 256 | — | 1 |
| AS395287US | MSC-HQ - MSC Inc | 256 | 256 | 2 |
| AS393522US | AS-METROLIST-SAC - MetroList Services, Inc. | 256 | — | 1 |
| AS26711US | ICANN-MDR - ICANN | 256 | 1 | 2 |
| AS401858US | ATTITUDEONLINE - Attitude Online | 256 | — | 1 |
| AS22415US | AVANTWIRELESS - AvantWireless LLC | 256 | — | 1 |
| AS400798US | PITIX-INFRA - Pittsburgh Internet Exchange | 256 | 4.1K | 2 |
| AS18696US | ETHNOS360-USHO - ETHNOS360, INC. | 256 | 1 | 2 |
| AS402114US | CYPRUSCU - CYPRUS CREDIT UNION INC. | 256 | — | 1 |
| AS14748US | BIG5CORP - Big 5 Corp. | 256 | — | 1 |
| AS16678US | AUSRAD - Austin Radiological Association | 256 | — | 1 |
| AS394382US | EL-DALLAS - Elevated Computing LLC | 256 | — | 1 |
| AS401635US | WALSWORTH - EAU CLAIRE - WALSWORTH PUBLISHING COMPANY | 256 | — | 1 |
| AS398241US | CELLNETIX - CELLNETIX LABS LLC | 256 | — | 1 |
| AS14108US | LOGIVISION-01 - Logivision Technologies | 256 | — | 1 |
| AS401236US | SBI - South Bay Internet | 256 | — | 1 |
| AS17333US | COLLEGE-OF-SAINT-MARY - College of Saint Mary | 256 | — | 1 |
| AS43074US | MHS-331-43074 - Maxim Healthcare Services, Inc. | 256 | — | 1 |
| AS397258US | GTRC-01 - Graton Resort and Casino | 256 | — | 1 |
| AS22358US | VERDUGO-FIRE-COMM-CENTER-1 - Verdugo Fire Communications Center | 256 | — | 1 |
| AS32728US | PALOMA-PARTNERS - Paloma Partners | 256 | — | 1 |
| AS17068US | ASN-OMIG - Ohio Mutual Insurance Company | 256 | — | 1 |