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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 | 24,656 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,306 |
| 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.
32,202 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 232 |
| 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 |
| AS397799US | SEMINOLE-CLERK-OF-COURTS-AND-COMPTROLLER - Seminole County Clerk of Courts and Comptroller | 256 | 1 | 2 |
| AS397945US | MTG - Madrone Technology Group Inc. | 256 | 4.1K | 2 |
| AS398800US | TOLE-TX-NET - Town of Little Elm | 256 | — | 1 |
| AS32355US | HBP-AS - Horsley Bridge Partners, LLC | 256 | — | 1 |
| AS26219US | EAS-MN-1 - Deli Express | 256 | — | 1 |
| AS27246US | SAUCON-AS - SAUCON TECHNOLOGIES, INC | 256 | — | 1 |
| AS395769US | NUASN1 - Northwest University | 256 | — | 1 |
| AS14923US | AS-GTS-OK-01 - Graham Technology Solutions LLC | 256 | 256 | 2 |
| AS23090US | PETCO-CH3 - Petco | 256 | — | 1 |
| AS40823US | SPORTS-ENDEAVORS - Sports Endeavors Inc. | 256 | — | 1 |
| AS218802US | NSHIELD Northshield LLC | 256 | — | 1 |
| AS26064US | COFKM - City of Kings Mountain | 256 | — | 1 |
| AS396174US | ACML-47-ASN1 - Advent Capital Management, LLC | 256 | — | 1 |
| AS46980US | NITEMARE - Nitemare Networking | 256 | 4.1K | 2 |
| AS27187US | INDIANA-RMC - Indiana Regional Medical Center | 256 | — | 1 |
| AS401473US | MKSYS - Marcus Systems, LLC | 256 | 256 | 2 |
| AS46200US | ITC-146 - IT Curves | 256 | — | 1 |
| AS394000US | PRIMENET - Primenet LLC | 256 | — | 1 |
| AS399985US | LL-DC - Pemco Mutual Insurance Company | 256 | — | 1 |
| AS26377US | EXPERTEKSYSTEMS - Expertek Systems Inc. | 256 | — | 1 |
| AS22524US | SSH-SPBG - Spartanburg Steel Holdings, Inc | 256 | — | 1 |
| AS26142US | MANNINGTON-SALEM - MANNINGTON MILLS | 256 | — | 1 |
| AS400431US | EK-COMPUTER-COLOCATION - E K Computer, Inc. | 256 | — | 1 |
| AS395906US | MBG-AS - Missouri Botanical Garden Board of Trustees | 256 | — | 1 |
| AS62789US | PDQATS-AS - PDQ Enterprises LLC | 256 | — | 1 |
| AS54837US | BSNOW-AS-01 - Butler Snow | 256 | — | 1 |
| AS207098US | APPLAUSEDE Applause App Quality, Inc. | 256 | — | 1 |
| AS26520US | HLITSERVICES - HLITSERVICES LLC | 256 | 4.1K | 2 |
| AS13545US | MICM - Matthews International Capital Management, LLC | 256 | — | 1 |
| AS393902US | MMH-158 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS399050US | ROW-CAB-01 - Rowan-Cabarrus Community College | 256 | — | 1 |
| AS7921US | ADTRAV - Adtrav Corporation | 256 | — | 1 |
| AS395736US | CARY-STREET-PARTNERS-LLC - Cary Street Partners | 256 | — | 1 |
| AS33540US | ALZHEI-ASN - Alzheimers Assoc. | 256 | — | 1 |
| AS397460US | BEAUFORT-COUNTY-SC-01 - Beaufort County Government | 256 | — | 1 |
| AS29759US | OXFORD-INDUSTRIES - Oxford Industries | 256 | — | 1 |
| AS397567US | ALERA-GROUP - Alera Group, Inc | 256 | — | 1 |
| AS30646US | BBNA-AS1 - BlueScope Buildings North America, Inc. | 256 | — | 1 |
| AS393825US | BOZZ-275-CT - Bozzuto's Incorporated | 256 | — | 1 |
| AS21607US | LAZERWARE-INC - LAZERWARE INC | 256 | — | 1 |
| AS401762US | FILTERED NETWORKS - Filtered Networks | 256 | — | 1 |
| AS396117US | OCFA-IRV - Orange County Fire Authority | 256 | — | 1 |
| AS27243US | SPOTEX-AS - Spotex | 256 | — | 1 |
| AS20208US | 8DWEB-01 - 8DWeb LLC | 256 | — | 1 |
| AS138454US | TFC-121-138454 - Trinity Fellowship | 256 | — | 1 |
| AS400640US | BREEEZAIR-NETWORKS - BreezeAir Networks LLC | 256 | — | 1 |