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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 |
| 1K |
| 1 |
| 5 |
| AS397770US | TRINITYLINK - Trinity Link LLC | 1K | — | 4 |
| AS398068US | ACSC1002 - Automobile Club of Southern California | 1K | — | 4 |
| AS20310US | ITW-CORPORATE - Illinois Tool Works | 1K | — | 4 |
| AS399518US | HAWAIIPACIFICHEALTH-ASN-01 - Straub Clinic & Hospital | 1K | — | 4 |
| AS33062US | ALEXLEE-INC - ALEX LEE INC | 1K | — | 2 |
| AS4989US | NEXXEN-USEAST-02 - RhythmOne, LLC | 1K | 1 | 2 |
| AS53941US | ACC-INET - Accertify, Inc. | 1K | — | 4 |
| AS53620US | PINTEREST - Pinterest, Inc. | 1K | 2 | 6 |
| AS31951US | NASADSN-AS - NASA Deep Space Network (DSN) | 1K | — | 1 |
| AS21849US | CARECENTRIX - CareCentrix, Inc. | 1K | — | 3 |
| AS26550US | PROVIDENT-FUNDING-ASSOC - Provident Funding | 1K | — | 4 |
| AS25714US | KCSR-ASN - The Kansas City Southern Railway Co. | 1K | — | 3 |
| AS11521US | MODUSLINK - ModusLink Corporation | 1K | — | 4 |
| AS10351US | ENERT - Enertron L.L.C. | 1K | — | 4 |
| AS23275US | LM-USA - Lycamobile USA Inc | 1K | — | 4 |
| AS30013US | PIXAR-AS - Pixar | 1K | 3 | 7 |
| AS16978US | MOVIECLIPS - ZEFR, Inc | 1K | — | 1 |
| AS40454US | MMUIA-NET-15 - Manning Municipal Utilities | 1K | — | 1 |
| AS15088US | FNG - First Network Group Inc | 1K | 17 | 3 |
| AS398172US | SIRIUSXM-CV - Sirius XM Connected Vehicle Services Inc. | 1K | — | 4 |
| AS394031US | SOUTHSUBURBANCOLLEGEOFCOOKCOUNTY - South Suburban College of Cook County | 1K | — | 1 |
| AS3902US | GLAXOSMITHKLINE - GlaxoSmithKline | 1K | — | 4 |
| AS100US | FMC-CTC - FMC Central Engineering Laboratories | 1K | — | 4 |
| AS401626US | NETIFACE-TORONTO - Netiface America, Inc. | 1K | 256 | 5 |
| AS63016US | RENOWN-HEALTH-RENO-NV - Renown Health | 1K | 1 | 2 |
| AS399360US | R2UT-ASN-01 - R2 Unified Technologies | 1K | — | 4 |
| AS23296US | LINCARE-HOLDINGS-INC - LINCARE INC | 1K | — | 4 |
| AS36015US | MRHS - Maury Regional Hospital | 1K | — | 1 |
| AS401656US | ATINETWORKS-01 - ATI NETWORKS, INC. | 1K | — | 3 |
| AS26330US | AVFUEL-CORPORATION - Avfuel Corporation | 1K | — | 2 |
| AS46099US | KHENET - Kaplan Higher Education Corporation | 1K | — | 1 |
| AS32258US | VELOCITY-FUSION - Velocity Fusion | 1K | — | 4 |
| AS397315US | REGION10-LEAP - Region 10 League for Economic Assistance and Planning, Inc. | 1K | — | 3 |
| AS393456US | X - United States Steel Corporation | 1K | — | 4 |
| AS6183US | TB-NET - TB Network LLC | 1K | — | 1 |
| AS30132US | ISC-F-AS - Internet Systems Consortium, Inc. | 1K | 2 | 6 |
| AS53251US | LIBERTY-PR-CORP-IT - Liberty Communications of Puerto Rico LLC | 1K | — | 1 |
| AS400858US | ARRIVIA - ARRIVIA, INC. | 1K | — | 3 |
| AS204890US | Pegasystems Pegasystems Inc. | 1K | — | 4 |
| AS398979US | RINGER-MOBILE-01 - Ringer | 1K | — | 2 |
| AS26869US | ASN-STPSB - ST. TAMMANY PARISH SCHOOL BOARD | 1K | — | 1 |
| AS395046US | SEXING-TECHNOLOGIES - Sexing Technologies | 1K | — | 4 |
| AS397121US | KAMAN-AS-1 - Kaman Corporation | 1K | — | 4 |
| AS27271US | URNA-1 - United Rentals (North America), Inc. | 1K | — | 3 |
| AS11866US | EL-MALVERN-PA - Ellucian Company LP | 1K | — | 4 |
| AS397720US | NOVUS-INSIGHT - Novus Insight | 1K | 51 | 10 |