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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 |
| AS400071US | SIMON-TEL-AS - Simon Telephonics | 256 | 1 | 2 |
| AS26645US | ODECASN - Old Dominion Electric Cooperative | 256 | — | 1 |
| AS398978US | TRINET1 - Trinity Communications LLC | 256 | — | 1 |
| AS54325US | HY-VEE-ASN - Hy-Vee, Inc | 256 | — | 1 |
| AS401253US | COG-MS - City of Gulfport | 256 | — | 1 |
| AS18636US | ONDRYA - ONDRYA LLC | 256 | 33 | 4 |
| AS3443US | ESNET-AS - ESnet | 256 | — | 1 |
| AS54024US | CFA-INSTITUTE - CFA Institute | 256 | — | 1 |
| AS401899US | BAER-CONSULTING-2 - Baer Consulting, Incorporated | 256 | — | 1 |
| AS401765US | CITY-OF-THOUSAND-OAKS - City of Thousand Oaks | 256 | — | 1 |
| AS53783US | MEMORIAL-HEALTH-CARE-SYSTEMS - Memorial Health Care Systems | 256 | — | 1 |
| AS54066US | WURTHBSC - Wurth Baer Supply Company | 256 | — | 1 |
| AS396448US | 1-MSP-LLC - 1 MSP LLC | 256 | — | 1 |
| AS22289US | CEFCU - CEFCU | 256 | — | 1 |
| AS210311US | BASICNETWORKS-AS Basic Networks Corp | 256 | — | 1 |
| AS26475US | FLAGLER - Flagler College | 256 | — | 1 |
| AS393533US | SECWITECH-NETWORKS - SECURITY WIRELESS & TECHNOLOGY L.L.C. | 256 | — | 1 |
| AS13753US | AS-BFG - Bedrock Fiber Group, inc. | 256 | — | 1 |
| AS397100US | JT-GLOBAL-US - ekit | 256 | — | 1 |
| AS400455US | PH-HQ - PowerHouse | 256 | — | 1 |
| AS395507US | RCH350 - Redlands Community Hospital | 256 | — | 1 |
| AS394191US | YPP-NET-KENNER - Your Preferred Printer, LLC | 256 | 1 | 2 |
| AS213124US | zylinktech-net zylinktech LLC | 256 | 86K | 9 |
| AS402679US | ORBSIX - ORBSIX | 256 | — | 1 |
| AS396531US | ATIMETALS - Allegheny Technologies Incorporated | 256 | — | 1 |
| AS397043US | AS-CHELCO - CHELCO | 256 | — | 1 |
| AS401241US | IHS - Integrated Hosted Services, Inc. | 256 | — | 1 |
| AS14917US | MILTON-CAT - Milton CAT | 256 | — | 1 |
| AS396233US | TELEMATE-ATL - TeleMate.Net Software, LLC | 256 | 1 | 2 |
| AS394206US | DHLC-AS - Deborah Heart and Lung Center | 256 | — | 1 |
| AS20348US | OFS-BRANDS - OFS Brands Holdings Inc | 256 | — | 1 |
| AS23438US | EZLINKS - EZLinks Golf, Inc. | 256 | — | 1 |
| AS393732US | BCS - Bogdan Computer Services Inc. | 256 | 4 | 5 |
| AS400166US | CPC-COGENT-BLOCK - Cheyenne Propagation Company | 256 | — | 1 |
| AS398332US | PPFULLWAN1 - Professional Plastics | 256 | — | 1 |
| AS401667US | STG-PAASASN-01 - Scale Technology Group, Inc | 256 | — | 1 |
| AS17296US | GIGAFY - Pioneer Broadband | 256 | 1 | 2 |
| AS395882US | POWER-SJ - Power Integrations, INC. | 256 | — | 1 |
| AS394670US | IEL-AS-US-01 - Integrity Express Logistics, LLC | 256 | — | 1 |
| AS402006US | CHRYSANTHEMUM - CHRYSANTHEMUM LOTUS LIMITED | 256 | — | 1 |
| AS211665US | HOSTREBEL Hostrebel, Inc. | 256 | — | 1 |
| AS393348US | SUC-CORP1 - Southern Union Conference of Seventh day Adventists | 256 | — | 1 |
| AS19669US | SCS - Steel City Signal | 256 | — | 1 |
| AS398124US | BLOONO-AS-01 - Bloono, Inc. | 256 | — | 1 |
| AS63057US | AXINN - Axinn, Veltrop & Harkrider LLP | 256 | — | 1 |
| AS40674US | RTMSD - Rose Tree Media School District | 256 | — | 1 |