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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. | 218M | 24,358 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,303 |
| 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.
32,168 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 | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,996 |
| AS701US | UUNET - Verizon Business | 43.6M | 994 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,342 |
| 768 |
| — |
| 3 |
| AS6598US | WIREDWATERS - Wired Waters, Inc. | 768 | — | 2 |
| AS30172US | FAMC-1 - Citizens Bank, National Association | 768 | — | 3 |
| AS30625US | AKERMAN-SENTERFITT - AKERMAN SENTERFITT | 768 | — | 3 |
| AS14196US | YAHOO-CHA - Yahoo Holdings Inc. | 768 | 1 | 4 |
| AS35996US | SV1-ENT-DC-VA1 - CentralColo, LLC | 768 | — | 3 |
| AS53922US | THRIVE-C1 - Thrive Operations, LLC | 768 | — | 3 |
| AS46550US | LOGICORP - Logitech Inc | 768 | 16 | 3 |
| AS400279US | REVELYST-OPERATIONS - Revelyst Operations | 768 | — | 3 |
| AS400535US | CITY-OF-CHESAPEAKE - City of Chesapeake | 768 | 4.1K | 4 |
| AS20139US | SSNC-MS - SS&C Technologies, Inc. | 768 | — | 3 |
| AS19674US | NAVPOINT - Navpoint Internet | 768 | — | 3 |
| AS63321US | AS-RAC - Rent-A-Center Inc. | 768 | — | 2 |
| AS32030US | VOIPSTER - VoIPster Communications, INC. | 768 | 3 | 6 |
| AS197570US | BladeX BladeX Networks LLC | 768 | — | 3 |
| AS26695US | BOGLETECH - Cubed Networks LLC | 768 | 4.4K | 9 |
| AS807US | FORKSYSTEMS - FORK SYSTEMS | 768 | 1 | 4 |
| AS26168US | EXCO-ASN-01 - EXCO Resources, Inc. | 768 | — | 3 |
| AS396524US | GMF-AS-1 - GM Financial | 768 | — | 2 |
| AS401839US | PYRO - Pyro Inc. | 768 | — | 3 |
| AS63116US | BAKER-DONELSON - Baker, Donelson, Bearman, Caldwell & Berkowitz, PC | 768 | — | 3 |
| AS25605US | SCANSAFE - Cisco OpenDNS, LLC | 768 | — | 3 |
| AS10966US | ALASKA-AIR - Alaska Airlines, Inc. | 768 | — | 3 |
| AS6973US | AS6973 - Morgan Stanley | 768 | — | 3 |
| AS36737US | CONFI-AS - PeopleFinders | 768 | — | 3 |
| AS399076US | BAYER-MEX - Bayer Corporation | 768 | — | 2 |
| AS398927US | FRANCIS-TUTTLE-TECHNOLOGY-CENTER - Francis Tuttle Technology Center School District #21 | 768 | — | 3 |
| AS400383US | HUMBLE-BRIDGER-1 - Denson Technologies | 768 | 257 | 5 |
| AS36752US | YAHOO-SP1 - Yahoo Holdings Inc. | 768 | 1 | 4 |
| AS20466US | WGBH-EDUCATIONAL-FOUNDATION - WGBH Educational Foundation | 768 | — | 2 |
| AS33575US | TFINET-PUBLIC - The Franklin Institute Science Museum | 768 | — | 2 |
| AS36523US | FCBT-AS - Farm Credit Bank of Texas | 768 | — | 3 |
| AS54485US | PCOM-EDU - Philadelphia College of Osteopathic Medicine | 768 | — | 3 |
| AS54145US | AUTH-SERVERS - auth-servers, LLC | 768 | — | 2 |
| AS15027US | FH-ASN-15027 - Foley Hoag LLP | 768 | — | 3 |
| AS26879US | AURELIA-TELECOM-LLC - Aurelia Telecom Systems LLC | 768 | 16 | 4 |
| AS36669US | SONIC-MSM-DATACENTER - AMERICAN ESOTERIC LABORATORIES | 768 | — | 3 |
| AS18254US | KLAY-AS-AP - KLAYER LLC | 768 | — | 2 |
| AS12142US | SULLIVAN-CROMWELL - SULLCROM | 768 | — | 3 |
| AS46619US | FRG-RAD - Foundation Radiology Group | 768 | — | 3 |
| AS36365US | NEOVEST-US - Neovest, Inc | 768 | — | 3 |
| AS15229US | EDFTNA - EDF Trading North America, LLC | 768 | — | 3 |
| AS23474US | SPGLOBAL-SNL-ACQUIRED - S&P Global Inc. | 768 | — | 3 |
| AS25966US | COHERENT - Coherent Inc. | 768 | — | 3 |
| AS399014US | ESSLUX - Essilor of America, Inc. | 768 | — | 3 |
| AS64248US | WCPS-ASN-01 - Worcester County Public Schools | 768 | — | 3 |
| AS978US | SHAMROCK-TRADING-CORPORATION - Shamrock Trading Corporation | 768 | — | 3 |