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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 |
| 512 |
| — |
| 2 |
| AS396310US | SDSU-SCIENCE-NETWORK - San Diego State University | 512 | — | 2 |
| AS22842US | ATT-L3 - Butler County Community College | 512 | — | 2 |
| AS53746US | ASBASN - American Savings Bank, FSB | 512 | — | 2 |
| AS27329US | DUANE-MORRIS-PHILADELPHIA - Duane Morris | 512 | — | 1 |
| AS393505US | CENTRACU - Centra Credit Union | 512 | — | 2 |
| AS395560US | THECULVERSTUDIOS - The Culver Studios | 512 | — | 2 |
| AS395009US | VECTORWORKS-NET - Vectorworks, Inc. | 512 | — | 2 |
| AS30586US | BOS - Bank Of Springfield | 512 | — | 2 |
| AS395259US | KIRKLAND-ELLIS-NY - Kirkland & Ellis LLP | 512 | — | 2 |
| AS46232US | AURORATRADE-01 - AURORA TELECOMMUNICATIONS | 512 | — | 2 |
| AS20383US | EXCHANGEBANK-AS - Exchange Bank | 512 | — | 2 |
| AS17388US | HOVERNET-AS - Hover Networks, Inc. | 512 | — | 2 |
| AS395143US | FMG-AS-1 - Fire Mountain Gems and Beads Inc. | 512 | — | 2 |
| AS40253US | ELYSIA-ROOT-LC - Elysia Root L.C. | 512 | 3 | 5 |
| AS23247US | SAMTECNA - Samtec, inc. | 512 | — | 2 |
| AS30327US | ALFA-MUTUAL - Alfa Mutual Insurance Company | 512 | — | 2 |
| AS18433US | ONESKY-FLIGHT-LLC - OneSky | 512 | — | 2 |
| AS35921US | COTTAGE-HEALTH02 - Cottage Health | 512 | — | 2 |
| AS25980US | SKYHELM-DC1 - SkyHelm LLC | 512 | — | 2 |
| AS14899US | MOBILEXUSA - MobilexUSA | 512 | — | 2 |
| AS11978US | VL-221-11978 - Vegas.com, LLC | 512 | — | 2 |
| AS396337US | DE - Dreisbach Enterprises, Inc. | 512 | — | 2 |
| AS394032US | CD-MKE-AS1 - Capital Data Inc | 512 | — | 2 |
| AS393401US | HAYSMED - Hays Medical Center | 512 | — | 2 |
| AS393815US | GEN4 - MemorialCare Health System | 512 | — | 2 |
| AS397531US | ITS-NETWORK - Iowa Data Centers | 512 | — | 1 |
| AS33492US | AS33492 - EvergreenHealth | 512 | — | 1 |
| AS396307US | SOUTHERNIMPERIAL - Southern Imperial Inc. | 512 | — | 2 |
| AS17051US | PURDUEPHARMA - Purdue Pharma LP | 512 | — | 2 |
| AS30232US | M3C-AS30232 - M3 Consulting LLC | 512 | 4.1K | 2 |
| AS46330US | LICKINGMEMORIAL-HS - Licking Memorial Hospital | 512 | — | 1 |
| AS29913US | GEICO03 - GEICO | 512 | — | 2 |
| AS18891US | CONFLUENCE - Confluence Technologies | 512 | — | 2 |
| AS400079US | ANGELTRAX - IVS, Inc. | 512 | — | 2 |
| AS401246US | SPPX - Silicon Prairie Portal & Exchange LLC | 512 | — | 2 |
| AS397126US | SWRI-BLDR - Southwest Research Institute | 512 | — | 2 |
| AS4898US | OPENTABLE-AS - Opentable, Inc. | 512 | — | 2 |
| AS55006US | VOLUSIA-SHERIFFS-OFFICE - Volusia Sheriff's Office | 512 | — | 2 |
| AS53350US | EMBHUN-WAS-01 - Embassy of Hungary | 512 | — | 2 |
| AS396271US | S-J-ROLLINS-TECHNOLOGIES - S. J. Rollins Technologies | 512 | — | 2 |
| AS397709US | JRW-10 - JackRabbit Wireless | 512 | 4.1K | 3 |
| AS35978US | KINETIC-1-2009 - GPB Communications Inc | 512 | — | 2 |
| AS16593US | FMCIN - First Merchants Corporation | 512 | — | 2 |
| AS36112US | PHSD-DATACENTER - Park Hill School District | 512 | — | 2 |
| AS396408US | PUBLICINET - City of Greensboro, NC | 512 | — | 1 |
| AS62857US | BILLINGSCLINIC - BILLINGS CLINIC | 512 | — | 2 |