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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) | 227.7M | 3,139 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,186 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,242 |
| 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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 383 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,669 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,948 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,373 |
| 256 |
| 1 |
| 2 |
| AS397483US | ACBO-185 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS23765US | EA-AU-AP - Electronic Arts, Australia | 256 | — | 1 |
| AS14705US | ROXBURYCC-1234-MH - Roxbury Community College | 256 | — | 1 |
| AS400359US | APETORO - ApeToro LLC | 256 | — | 1 |
| AS399344US | DISNEY-TELEVISION-STUDIOS - Disney Worldwide Services, Inc. | 256 | — | 1 |
| AS31807US | RACKALOHA1 - RackAloha, LLC | 256 | 16 | 2 |
| AS16081US | AS16081 Kyndryl, Inc. | 256 | — | 1 |
| AS27347US | DATAPRO-NETWORKS - Datapro Telecom Solutions LLC | 256 | — | 1 |
| AS14625US | PGA-TOUR - PGA Tour | 256 | — | 1 |
| AS53693US | RAA-NYC-NET - Ralph Appelbaum Associates, Inc. | 256 | — | 1 |
| AS32051US | SULLCROM - SULLCROM | 256 | — | 1 |
| AS395640US | APSU-ASN - Austin Peay State University | 256 | — | 1 |
| AS396179US | SVH-KS-INET-01 - STORMONT-VAIL HEALTHCARE, INC. | 256 | — | 1 |
| AS397995US | CITYOFEDMOND - City of Edmond | 256 | — | 1 |
| AS398168US | GIRMC-NET-01 - Grand Island Regional Medical Center | 256 | — | 1 |
| AS22336US | PELLA - Pella Corporation | 256 | 1 | 2 |
| AS54928US | MSMC-FL - Mount Sinai Medical Center of Florida, Inc. | 256 | — | 1 |
| AS394327US | OCTAPHARMAPLASMA-1 - Octapharma Plasma, Inc. | 256 | — | 1 |
| AS16697US | CITY-OF-COLUMBIA-MO - City of Columbia, MO | 256 | — | 1 |
| AS393848US | IKEA-NA-AS - IKEA North America Services, LLC | 256 | — | 1 |
| AS395804US | GRH - Grande Ronde Hospital, Inc. | 256 | — | 1 |
| AS400502US | XTENIT - Xtenit | 256 | — | 1 |
| AS12017US | PRM-078 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS53413US | PRCC - Pearl River Community College | 256 | — | 1 |
| AS402226US | ONLYSCANS - OnlyScans LLC | 256 | — | 1 |
| AS395664US | ALTIUS-INSTITUTE-FOR-BIOMEDICAL-SCIENCES - Altius Institute for Biomedical Sciences | 256 | — | 1 |
| AS394515US | MKT-CH2-NOC - Market Track LLC | 256 | — | 1 |
| AS31854US | SAFETY-NATIONAL-CASUALTY-CORPORATION - Safety National Casualty Corporation | 256 | — | 1 |
| AS400853US | KEYSOURCE-ASNKAL58 - KeySource Acquisition, LLC | 256 | — | 1 |
| AS14470US | FALLSCHURCHVAGOV - CITY OF FALLS CHURCH | 256 | — | 1 |
| AS33462US | JANUS-LEXINGTON-MA - JANUS Research Group | 256 | — | 1 |
| AS1617US | JLEM - Jacobs Levy Equity Management, Inc. | 256 | 1 | 2 |
| AS36603US | ARC-INTERNET - AIRLINES REPORTING CORPORATION | 256 | — | 1 |
| AS46190US | KRMC - Kingman Regional Medical Center | 256 | — | 1 |
| AS63137US | DOMDIAGASN211 - Dominion Diagnostics, LLC | 256 | — | 1 |
| AS15077US | MAG-TEK - MAG-TEK, INC. | 256 | — | 1 |
| AS54857US | TQS-PDX-INTERNET - Qorvo US, Inc | 256 | — | 1 |
| AS399814US | LAER-AS-LHR1 - UnitedLayer, LLC | 256 | 1 | 2 |
| AS400919US | AKARDAM-NET - Akardam Networks | 256 | 4 | 5 |
| AS400627US | DGH-PUBLIC - Dayton General Hospital | 256 | — | 1 |
| AS215327US | Altare Altare AI LLC | 256 | — | 1 |
| AS397266US | PAPERLESSPOST - Paperless Inc | 256 | — | 1 |
| AS27228US | PHILLYIX-INFRA - Philadelphia Internet Exchange | 256 | 4.1K | 2 |
| AS11695US | THESTREET-DOT-COM - TheStreet.Com | 256 | — | 1 |
| AS14035US | KATTEN-MUCHIN-ROSENMAN-LLP - KATTEN MUCHIN ROSENMAN LLP | 256 | — | 1 |
| AS16393US | BARRYU-AS - Barry University | 256 | — | 1 |