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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 | 3,138 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,163 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,240 |
| 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 | 373 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,656 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,941 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,379 |
| 1K |
| — |
| 4 |
| AS53893US | EARTHWAVESVCS - Earthwave Services, LLC | 1K | 65.5K | 2 |
| AS18660US | KSUONLINE-I2 - Kentucky State University | 1K | — | 1 |
| AS63313US | IEP-AS - NameCentral, Inc. | 1K | 65.5K | 2 |
| AS54661US | EM-22 - Intercontinental Exchange, Inc. | 1K | — | 4 |
| AS14527US | CABELAS - Cabela's Inc. | 1K | — | 2 |
| AS18535US | ROCHE-INDY - Hoffmann LaRoche, Inc. | 1K | 4.4K | 4 |
| AS393283US | UNIVAR SOLUTIONS - Univar Solutions LLC | 1K | — | 4 |
| AS46798US | SSCSINC - Service Station Computer Systems, Inc. | 1K | — | 2 |
| AS46902US | CALSTRS-SAC1 - California State Teachers Retirement System (CalSTRS) | 1K | — | 3 |
| AS20035US | AS-BBI - Broadway National Bank | 1K | — | 4 |
| AS44071US | ACS_AS Advanced Communications Solutions LLC | 1K | — | 4 |
| AS393959US | ABIT - AdvancedBITS, Inc | 1K | — | 3 |
| AS53598US | NJRCASN53598 - National Jewish Medical and Research Center Corporation | 1K | — | 4 |
| AS30423US | AMEDI-3-ASN1 - Amedisys, Inc. | 1K | — | 3 |
| AS399571US | SKYNETKY - SKYNET COMMUNICATIONS OF KENTUCKY LLC | 1K | 69.6K | 7 |
| AS4297US | CENTURYLINK-MTIPS4-HLR - CenturyLink Communications, LLC | 1K | — | 4 |
| AS18538US | WCPSS-BOE - Wake County Public School System | 1K | — | 1 |
| AS395382US | CFN-AS - COMMONWEALTH EQUITY SERVICES, INC. | 1K | — | 4 |
| AS11684US | JCDH - Jefferson County Department of Health | 1K | — | 1 |
| AS53658US | SOCKETLABS - SocketLabs | 1K | — | 1 |
| AS54128US | POKEMON-BELLEVUE - The Pokemon Company International, Inc. | 1K | — | 4 |
| AS19833US | ABAATLASN1 - Abacus Solutions, LLC | 1K | — | 2 |
| AS31837US | LION-BILLERICA - Lionbridge Technologies, Inc. | 1K | — | 4 |
| AS40552US | FBMC-HQ - Fringe Benefits Management Company | 1K | — | 1 |
| AS27169US | RYAN-AS - Ryan, LLC | 1K | — | 1 |
| AS23200US | CHARTER-23200-INDIANA-C3 - Charter Communications LLC | 1K | 256 | 2 |
| AS20050US | SPPINTERNET01 - Southwest Power Pool | 1K | — | 4 |
| AS1996US | ASN1 - Fairdinkum Consulting, LLC | 1K | — | 4 |
| AS26341US | CORELIGHTNET-CLOUD - Corelight, Inc. | 1K | 1 | 5 |
| AS16933US | ADVANTAS - Advantas Internet Solutions | 1K | — | 4 |
| AS10725US | GENENTECH - Genentech, Inc. | 1K | 65.8K | 6 |
| AS12092US | SONIFI - Sonifi Solutions, Inc. | 1K | — | 4 |
| AS29753US | BROISDTXASN - Brownsville Independent School District | 1K | — | 1 |
| AS398118US | VITANET-DATA - Commonwealth of Virginia Office of the Attorney General | 1K | — | 4 |
| AS22253US | IHIRELLC - IHIRE LLC | 1K | — | 1 |
| AS401801US | ILSOS - Illinois Secretary of State | 1K | — | 1 |
| AS40692US | CIS-AZ-1 - Cochise Internet Services | 1K | 65.5K | 5 |
| AS42615US | igloo22225 June Slater | 1K | 69.9K | 11 |
| AS55155US | LPS-8 - Black Knight IP Holding Company, LLC | 1K | — | 3 |
| AS23444US | TESTAMERICA - TestAmerica Laboratories, Inc. | 1K | — | 4 |
| AS47087US | AS-ALIC-1 - Ameritas Life Insurance Corp | 1K | — | 2 |
| AS40748US | CARCOM-MCTX - CarrierCOM LP | 1K | — | 1 |
| AS395120US | DCE1 - Ashley Furniture Industries, Inc. | 1K | — | 2 |
| AS400446US | CITIZENSBANK - The Citizens Bank | 1K | 4.1K | 4 |
| AS32823US | EVOLVER - Evolver, Inc. | 1K | — | 1 |
| AS399249US | DC-ASN-01 - Alabama One Credit Union | 1K | — | 3 |