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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 |
| 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 |
| AS398018US | WPP-IT-CHICAGO - Group M Worldwide, LLC | 256 | — | 1 |
| AS55100US | GTCNA - The Glenmede Trust Company National Association | 256 | — | 1 |
| AS30100US | ATLASWORLDGROUP-AS - Atlas Van Lines | 256 | — | 1 |
| AS14514US | PHJW - Paul, Hastings, Janofsky & Walker LLP | 256 | — | 1 |
| AS53579US | FLP-5 - The Free Library of Philadelphia | 256 | — | 1 |
| AS36531US | WDBJ - WDBJ TELEVISION,INC | 256 | — | 1 |
| AS394246US | VALOR-COMMUNICATION-INC-INDUSTRY - VALOR COMMUNICATION, INC. | 256 | — | 1 |
| AS396208US | AZLE-ISD - Azle Independent School District | 256 | — | 1 |
| AS19712US | ZOLL-CHELM - ZOLL Medical Corporation | 256 | 1 | 2 |
| AS36832US | NGL-AS - Network Gibbon LLC | 256 | 256 | 2 |
| AS63008US | SIMPLE-ASN - SIMPLE CLOUD SOLUTION LLC | 256 | 2 | 3 |
| AS399364US | KIRKLAND-ELLIS-CC - Kirkland & Ellis LLP | 256 | — | 1 |
| AS400090US | LMKR-AS-01 - LMK Resources Inc. | 256 | — | 1 |
| AS970US | KEATONAGLAIR-EHRE-EIN - Keaton Alexander Guger Lair | 256 | 256 | 2 |
| AS400942US | AS-4E5A - 617A Corporation | 256 | — | 1 |
| AS25732US | TOTALCARDINC - Total Card, Inc. | 256 | — | 1 |
| AS397789US | SELCO-ASN-01 - SELCO Community Credit Union | 256 | — | 1 |
| AS395053US | CCS-CORPORATE461 - Community Counselling Service Co., LLC | 256 | — | 1 |
| AS18480US | GDT-AS - General Datatech, LP | 256 | — | 1 |
| AS397089US | USORD - EXPEDIA, INC | 256 | — | 1 |
| AS400305US | MSDMTVERNON-IN - MSD of Mt. Vernon | 256 | — | 1 |
| AS26185US | CLOUDAPT - Cloudapt LLC | 256 | — | 1 |
| AS401662US | HEIMDALLTEK - HeimdallTek | 256 | 1 | 2 |
| AS23053US | SELECTIVE-AS - Selective Insurance Company of America | 256 | — | 1 |
| AS22731US | MTB - Manufacturers and Traders Trust Company | 256 | — | 1 |
| AS400278US | TFC-ASN-01 - TITLE FINANCIAL CORPORATION | 256 | — | 1 |
| AS363US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 256 | — | 1 |
| AS393332US | MCALLENISD-TX - McAllen Independent School District | 256 | — | 1 |