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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. | 218.1M | 24,718 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 643 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 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.
32,222 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 | 3,893 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,007 |
| AS701US | UUNET - Verizon Business | 43.6M | 997 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,395 |
| 512 |
| — |
| 1 |
| AS395372US | FIRSTCOMMANDFINANCIALSERVICES - First Command Financial Services, Inc. | 512 | — | 2 |
| AS5666US | NET-CPRK - Speedcast Communications, Inc | 512 | — | 2 |
| AS15354US | AS-BML01 - Morgan, Lewis & Bockius LLP | 512 | — | 2 |
| AS30232US | M3C-AS30232 - M3 Consulting LLC | 512 | 4.1K | 2 |
| AS17361US | AUTO-AS17363 - Automated Securities Clearance LLC | 512 | — | 2 |
| AS23134US | VERSO-PUB-RANGE1 - Verso Corporation | 512 | — | 2 |
| AS11933US | ILS-VB-ATT-AS - Supply Technologies LLC | 512 | — | 2 |
| AS13803US | E-SYNCNET - CRC Inc. | 512 | — | 2 |
| AS394851US | NUSOCLOUD-CO - NUSO | 512 | 16.4K | 4 |
| AS22083US | MEMORIAL-HEALTH-CARE - Memorial Health Care System | 512 | — | 2 |
| AS27528US | EIKON-ASN-01 - Eikon Therapeutics, Inc. | 512 | — | 1 |
| AS21970US | PCESYSTEMS - PCE Systems | 512 | — | 2 |
| AS395292US | ACRISURE-ARENA - Acrisure Arena | 512 | — | 2 |
| AS396387US | EZINE-AS - EZINE INDUSTRIES INC | 512 | — | 2 |
| AS18772US | SKY-LAKES-MEDICAL-CENTER - Sky Lakes Medical Center, Inc. | 512 | — | 1 |
| AS63476US | SMS-ASSIST - SMS Assist, L.L.C. | 512 | — | 2 |
| AS395655US | TECH-ELECTRONICS-INC-ASN - Tech Electronics, Inc. | 512 | 512 | 4 |
| AS394074US | POGOZONE-ALLIXO - PogoZone | 512 | — | 2 |
| AS46467US | DISH-NETWORK-LLC - DISH Network L.L.C. | 512 | — | 1 |
| AS33060US | THEPCU-AS-THE-POLICE-CREDIT-UNION - SFPCU | 512 | — | 2 |
| AS29764US | AMETEK-CTC - AMETEK Inc. | 512 | — | 2 |
| AS35921US | COTTAGE-HEALTH02 - Cottage Health | 512 | — | 2 |
| AS398555US | CONCOR-2-398555 - Concordia University Nebraska | 512 | — | 2 |
| AS14062US | AKQA - AKQA, Inc. | 512 | — | 2 |
| AS32512US | APHA-DC-1 - AMERICAN PUBLIC HEALTH ASSOCIATION | 512 | — | 2 |
| AS21794US | AMEREN-AS2 - Ameren Corp. | 512 | — | 2 |
| AS396146US | 396146 - Therap Services | 512 | — | 2 |
| AS26287US | NBER-AS - National Bureau of Economic Research, Inc. | 512 | — | 1 |
| AS26576US | WEBHIWAY-01 - Webhiway Communications LLC | 512 | 4.1K | 3 |
| AS394503US | PSEUDONYM-NET - Pseudonym.mx LLC | 512 | 1 | 3 |
| AS33486US | ALKERMES - ALKERMES INCORPORATED | 512 | — | 2 |
| AS53937US | SMH-AS-NO - Sarasota Memorial Hospital | 512 | — | 2 |
| AS32334US | CLOUDCALL-AS - CloudCall Inc | 512 | 1 | 3 |
| AS21654US | APOG-EHC - Apogee Telecom Inc. | 512 | — | 2 |
| AS401577US | STRATA-ASN-01 - StrataCare Solutions LLC | 512 | — | 2 |
| AS53309US | BLACKHILLSCORP - Black Hills Corporation | 512 | — | 2 |
| AS6488US | DS6488-0 - AMUG | 512 | — | 2 |
| AS402899US | PTLHL - Prestige | 512 | 3.7M | 9 |
| AS394467US | WEXINC-AOC - WEX INC | 512 | — | 2 |
| AS401648US | EVERI GAMES - Everi Games Inc. | 512 | — | 2 |
| AS11275US | NBH-HOLDINGS-CORPORATION - National Bank Holdings Corporation | 512 | — | 2 |
| AS32155US | NHC-NV1 - New Horizon Communications Corp. | 512 | — | 2 |
| AS394735US | TABUSH - Tabush Consulting Group, Inc. | 512 | — | 1 |
| AS46330US | LICKINGMEMORIAL-HS - Licking Memorial Hospital | 512 | — | 1 |
| AS54431US | LUNAVI-DEN - Lunavi, Inc. | 512 | — | 1 |
| AS19085US | TGNA-KSDK - TEGNA Inc. | 512 | — | 2 |