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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 | 24,632 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,307 |
| 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.
32,210 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 | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,359 |
| 256 |
| — |
| 1 |
| AS400297US | XAI - X.AI | 256 | — | 1 |
| AS27511US | PUNAHOU - Punahou School | 256 | — | 1 |
| AS19386US | STTX-SPOKANE - Spokane Tribe Telecommunications Exchange, LLC | 256 | — | 1 |
| AS402173US | SCHENANIGANS-01 - I Need Help Alliance | 256 | 5 | 6 |
| AS23507US | AVSISP - AV SERVICES LLC | 256 | — | 1 |
| AS32933US | CERES-UNIFIED-SCHOOL-DISTRICT - Ceres Unified School District | 256 | — | 1 |
| AS54530US | SPRINGFIELD-PUBLIC-SCHOOL-MA - Springfield Public Schools | 256 | 256 | 2 |
| AS33275US | KHS-ASN - Thomas Jefferson University Hospitals, Inc. | 256 | — | 1 |
| AS396096US | GP1 - Green Plains Inc. | 256 | — | 1 |
| AS399190US | FSTRF14226 - Frontier Science and Technology Research Foundation, Inc. | 256 | — | 1 |
| AS23090US | PETCO-CH3 - Petco | 256 | — | 1 |
| AS1067US | HC-CB-216 - Hamilton County, Ohio | 256 | — | 1 |
| AS62673US | SHRZ - Schurz Communications Inc. | 256 | — | 1 |
| AS393622US | PAFFORD-MEDICAL-SERVICES - PAFFORD MEDICAL SERVICES | 256 | — | 1 |
| AS36035US | INTELLICOMM-1 - Intellicomm Inc. | 256 | — | 1 |
| AS398886US | PEC-AS-01 - Progressive Expert Consulting, Inc. | 256 | — | 1 |
| AS27187US | INDIANA-RMC - Indiana Regional Medical Center | 256 | — | 1 |
| AS396912US | CEICMHA - Community Mental Health Authority of Clinton-Eaton-Ingham Counties | 256 | 256 | 2 |
| AS4902US | CI-CCASN - CONSERVATION INTERNATIONAL FOUNDATION | 256 | — | 1 |
| AS23057US | DART-IP-ASN - DART TRANSIT COMPANY | 256 | — | 1 |
| AS46390US | NABNY245 - National Australia Bank Limited | 256 | — | 1 |
| AS394185US | BOU-BANCORP - Bank of Utah | 256 | — | 1 |
| AS393920US | MEREDITHCORP2 - Meredith Corp. | 256 | — | 1 |
| AS1430US | BB0-BOSTON - Board of Bar Overseers | 256 | — | 1 |
| AS393500US | GERMANTOWNFRIENDSSCHOOL - Germantown Friends School | 256 | — | 1 |
| AS395614US | COL - City of Lansing | 256 | — | 1 |
| AS398189US | NFOCUS-01 - NFOCUS CONSULTING INC. | 256 | — | 1 |
| AS401280US | TESRHO - TECH SERVE HOSTING LLC | 256 | — | 1 |
| AS30587US | TAI-GEORGETOWN - Toyota Tsusho America, Inc. | 256 | — | 1 |
| AS894US | NINJA-IX-SERVICES-ASN - Ninja-IX Services LLC | 256 | 257 | 3 |
| AS39950US | STARC-15-39950 - STARCREST PRODUCTS OF CALIFORNIA, INC. | 256 | — | 1 |
| AS31754US | NORTHWEST-FINANCIAL-CORP - Northwest Financial Corp | 256 | — | 1 |
| AS53473US | BLOCKDC - Kinetic Web Solutions | 256 | — | 1 |
| AS395879US | CORPORATE-AS - Identity Group Holdings LLC | 256 | — | 1 |
| AS397761US | CISD-ASNNUMBER-01 - CORSICANA ISD | 256 | — | 1 |
| AS395498US | FLORIDAMARINE - Florida Marine | 256 | — | 1 |
| AS1975US | PROQUEST-AS - PROQUEST LLC | 256 | — | 1 |
| AS26264US | TVI-AS - TVI Inc | 256 | — | 1 |
| AS33433US | CLINICOMP - CLINICOMP INTERNATIONAL, INC. | 256 | — | 1 |
| AS401360US | STEARNSBANK-AS-02 - Stearns Financial Services, Inc | 256 | — | 1 |
| AS399437US | LUZERNE-IT-ASN - Luzerne County | 256 | — | 1 |
| AS397141US | VIS-LLC-SC - VIS LLC | 256 | — | 1 |
| AS3291US | PSINet-Europe GTT Communications Inc. | 256 | — | 1 |
| AS53592US | KEPOS - Kepos Capital LP | 256 | — | 1 |
| AS55075US | BNS - Telecommunication Properties, Inc | 256 | — | 1 |
| AS19243US | ACMLLC - Atlantic Coast Mortgage LLC | 256 | — | 1 |