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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 |
| NMTRANS-HQ-AS01 - N&M Transfer Co., Inc. |
| 256 |
| — |
| 1 |
| AS26220US | ANALYSISGROUP - Analysis Group, Inc. | 256 | — | 1 |
| AS46775US | DCI - Drummond Company, Inc. | 256 | — | 1 |
| AS20462US | OPULENT-CLOUD - Opulent Cloud | 256 | — | 1 |
| AS63007US | COPK-ASN-1 - City of Overland Park, Kansas | 256 | — | 1 |
| AS394236US | LCCC - Luzerne County Community College | 256 | — | 1 |
| AS401197US | KCORE-01 - kCore Cloud LLC | 256 | 256 | 2 |
| AS7013US | AS-HSLC-01 - Health Sciences Libraries Consortium | 256 | — | 1 |
| AS63829US | PCV-9-63829 - PeoplesBank, A Codorus Valley Company | 256 | — | 1 |
| AS399223US | TRUNET-INTERNET-SERVICES-LLC - TruNet Internet Services, LLC | 256 | — | 1 |
| AS18860US | AS19876 - Berger Schatz LLP | 256 | — | 1 |
| AS397526US | LHM-ASN-2247211 - Liberty Healthcare Management Inc. | 256 | — | 1 |
| AS396347US | HCC-ASN - Hutchinson Community College | 256 | — | 1 |
| AS54150US | BMC-LE - BROADLAWNS MEDICAL CENTER | 256 | — | 1 |
| AS400801US | BISTATEDEVELOPMENT - Bi-State Development Agency of the Missouri-Illinois Metropolitan District | 256 | — | 1 |
| AS394942US | COF-CA-AS - City of Fontana | 256 | — | 1 |
| AS32788US | C75-NETWORKS - Coloblox Data Centers Inc | 256 | — | 1 |
| AS394093US | HS-ASN - Hallmark Sweet, INC | 256 | — | 1 |
| AS395933US | YRMC-AS - Dignity Health, Yavapai Regional Medical Center | 256 | — | 1 |
| AS21605US | AHBELO-CORP - DallasNews Corporation | 256 | — | 1 |
| AS398360US | CKT-CLOUD - Common Knowledge Technology Inc | 256 | — | 1 |
| AS40451US | ASN-BOP - Board of Pensions of the Evangelical Lutheran Church in America | 256 | — | 1 |
| AS20331US | AS-20331 - Onity Group Inc. | 256 | — | 1 |
| AS401495US | IVA-ASN-1 - IVA | 256 | — | 1 |
| AS54421US | WARTBURG-COLLEGE - Wartburg College | 256 | — | 1 |
| AS27164US | INTERACTIVE BROKERS CORP - Interactive Brokers Corp | 256 | — | 1 |
| AS400843US | AUDACY - Audacy | 256 | — | 1 |
| AS14123US | UPLION-AS-01 - UpLion | 256 | — | 1 |
| AS55123US | 37589 - Brilliant Jewelers/MJJ Inc. | 256 | — | 1 |
| AS15302US | TRIALCARD-01 - TrialCard Incorporated | 256 | — | 1 |
| AS13983US | ALE-SOLUTIONS-INC - ALE Solutions Inc | 256 | — | 1 |
| AS399283US | ROBLY-MARKETING-LLC - Robly Digital Marketing LLC | 256 | — | 1 |
| AS394573US | GSFCS - GreenStone Farm Credit Services | 256 | — | 1 |
| AS26759US | SAGOFIBER-01 - Sago Fiber LLC | 256 | 65.5K | 2 |
| AS18559US | CANIK - CANIK USA, LLC | 256 | 256 | 2 |
| AS399369US | KIRKLAND-ELLIS-PA - Kirkland & Ellis LLP | 256 | — | 1 |
| AS36128US | HCTC-205 - Hillsborough County Tax Collector | 256 | — | 1 |
| AS36078US | MI-DATACENTER-2019 - M/I Homes, Inc | 256 | — | 1 |
| AS397109US | CPASNET1 - Centerview Partners, LLC | 256 | — | 1 |
| AS401620US | HOLOCENE ADVISORS LP - Holocene Advisors, LP | 256 | — | 1 |
| AS402287US | PGAL-BGP - PGAL | 256 | — | 1 |
| AS395627US | CITY-OF-MONTGOMERY-AL - City of Montgomery | 256 | — | 1 |
| AS63013US | EHRTECH-N1 - EHR Technology Group, L.L.C. | 256 | — | 1 |
| AS22236US | UNITEDBANCORP - The Citizens Savings Bank | 256 | — | 1 |
| AS5081US | CCS-AS - CLARE COMPUTER SOLUTIONS | 256 | 1 | 2 |
| AS14180US | AS-KOGNITIVE - Kognitive Networks | 256 | — | 1 |
| AS11244US | MIS-NET - Midstream Integrity Services LLC | 256 | — | 1 |