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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 | 24,635 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| 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.
32,220 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 | 2,003 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,360 |
| 256 |
| — |
| 1 |
| AS399605US | REMEMBERTHEMILK - Remember The Milk Inc. | 256 | — | 1 |
| AS393469US | LANERMC - Lane Regional Medical Center | 256 | — | 1 |
| AS33271US | NPD-ASN-HQ-01 - Naperville Park District | 256 | — | 1 |
| AS394669US | COTA-AUSTTX - Circuit of The Americas LLC | 256 | — | 1 |
| AS22660US | CL-IND-2401 - Cleveland Indians Baseball Company Limited Partnership | 256 | — | 1 |
| AS399846US | GOOCHLAND-COUNTY - County of Goochland | 256 | — | 1 |
| AS46338US | CPCL-ASN1 - CPC Logistics, Inc | 256 | — | 1 |
| AS63261US | GHCO-DCA - Graham Holdings Company | 256 | — | 1 |
| AS32943US | WEB-OF-NEVADA-01 - Web of Nevada | 256 | 256 | 2 |
| AS401228US | KOINIJ-1 - Koinij LLC | 256 | — | 1 |
| AS46305US | UA-4585 - Universal Audio, Inc. | 256 | — | 1 |
| AS17235US | COMTIME - Commercial Time Sharing, Inc. | 256 | — | 1 |
| AS218613US | BOCCHI-SH Bocchi Network LLC | 256 | — | 1 |
| AS39940US | POLICE-AND-FIRE - Police and Fire Federal Credit Union | 256 | — | 1 |
| AS14151US | ASN-ICI-ORG - Investment Company Institute | 256 | — | 1 |
| AS54698US | ALTUM-CAPITAL-MANAGEMENT-LLC - Altum Capital Management LLC | 256 | — | 1 |
| AS25652US | AS-SHCFCU - InRoads Federal Credit Union | 256 | — | 1 |
| AS30472US | EAST-WEST-CENTER-HOUSINGNET - East-West Center | 256 | — | 1 |
| AS62737US | PARINC - Psychological Assessment Resources, Inc. | 256 | — | 1 |
| AS402862US | SEMPERONE - SemperOne | 256 | 256 | 2 |
| AS400165US | LOGIX-HQ - LOGIX | 256 | — | 1 |
| AS14675US | AS14675-66-128-188-0-SLASH-24 - Plains Commerce Bank | 256 | — | 1 |
| AS5097US | INVESTORSTITLE - Investors Title Company | 256 | — | 1 |
| AS400153US | ASL-691 - Absolute Technologies LLC | 256 | — | 1 |
| AS400257US | CITY-OF-ROCKLIN-AS-01 - City of Rocklin | 256 | — | 1 |
| AS29960US | QUALTRICS-01 - Qualtrics LLC | 256 | — | 1 |
| AS398435US | STI-ASN-01 - Sequential Technology International, LLC | 256 | — | 1 |
| AS32750US | GLEIM-ASN - Gleim Internet, Inc. | 256 | — | 1 |
| AS19263US | CBAD-NET - Cincinnati Bell Any Distance, Inc. | 256 | — | 1 |
| AS399373US | GIGCASTAUS-01 - Gigcasters LLC | 256 | — | 1 |
| AS402725US | 1N7ER-NET - 1n7er.net, | 256 | 4.1K | 2 |
| AS40434US | UCIS-AS - Center for Innovation | 256 | — | 1 |
| AS395773US | COLLEGIS - Collegis Education | 256 | — | 1 |
| AS19173US | TEXAS-EXCHANGE-BANK - Texas Exchange Bank | 256 | — | 1 |
| AS400489US | DOMICILIUM - DOMICILIUM HOLDINGS INCORPORATED | 256 | — | 1 |
| AS27328US | DUQUESNE-CAPITAL-MANAGEMENT-LLC-PA - DUQUESNE CAPITAL MANAGEMENT LLC | 256 | — | 1 |
| AS6618US | JOHNS-122 - Johns Hopkins HealthCare | 256 | — | 1 |
| AS13475US | WFCU-WW-ASN - UNIFY Financial Credit Union | 256 | — | 1 |
| AS12162US | DATA-DISTIBUTORS-AS - DATA DISTRIBUTORS | 256 | — | 1 |
| AS54189US | HLIOP-ASN2 - Maxion Wheels U.S.A. LLC | 256 | — | 1 |
| AS400302US | AS-PIKNIK - PiKNiK & Company Inc. | 256 | 1 | 2 |
| AS399578US | HTUL - Hillside (Shared Services US) LLC | 256 | — | 1 |
| AS393761US | PINNACLE-BANK-ARENA - West Haymarket Joint Public Agency | 256 | — | 1 |
| AS12031US | LORD-CORP-CARY - Lord Corporation | 256 | — | 1 |
| AS402261US | MWH-ASN-01 - Midwest Hose & Specialty | 256 | — | 1 |
| AS21707US | EMHS - Endless Mountains Health Systems | 256 | — | 1 |