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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 | 24,555 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,303 |
| 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.
32,168 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,995 |
| AS701US | UUNET - Verizon Business | 43.6M | 994 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,354 |
| 512 |
| — |
| 1 |
| AS26148US | CSMPR - Cooperativa de Seguros Multiples de Puerto Rico | 512 | — | 2 |
| AS36437US | SCC-44 - County of Santa Cruz | 512 | — | 2 |
| AS11020US | ANSI - RUSTIC RESOURCES, LLC | 512 | 16 | 3 |
| AS30438US | RESOLVE-BGP01 - Resolve I.T. | 512 | 1 | 3 |
| AS40120US | SE-BR-AS-01 - TAC Americas, Inc. | 512 | — | 1 |
| AS23513US | WHALEY - AL WHALEY/SUNNY SIDE COMPUTING | 512 | — | 2 |
| AS46274US | UPHS - Penn Medicine | 512 | — | 2 |
| AS46658US | TRANSMON119 - Transmontaigne Product Services, Inc. | 512 | — | 2 |
| AS54268US | CAPITALHEALTH - Capital Health System, Inc | 512 | — | 2 |
| AS401518US | OAI-01 - OpenAI OpCo, LLC | 512 | — | 1 |
| AS63328US | SWEETFW-NET - Sweetwater Sound Inc | 512 | — | 1 |
| AS63468US | INFINITTNA - Infinitt North America, Inc. | 512 | — | 2 |
| AS54185US | PRMI-CORP-AS01 - PRIMARY RESIDENTIAL MORTGAGE | 512 | — | 2 |
| AS14459US | ENTERTAINMENTPARTNERS-AS-A - Entertainment Partners | 512 | — | 2 |
| AS398809US | OSW - One Spa World LLC | 512 | — | 1 |
| AS17308US | WECU-ASN - Whatcom Educational Credit Union | 512 | — | 1 |
| AS21822US | JDBS - JD Byrider Systems Inc | 512 | — | 2 |
| AS18746US | MIG-BGP - Merchants Insurance Group | 512 | — | 2 |
| AS394742US | INU - DP Solutions, Inc. | 512 | — | 2 |
| AS393485US | TIFFANYCO - Tiffany and Company | 512 | — | 2 |
| AS202540US | CDSTEPHENS Christopher Stephens | 512 | 6 | 7 |
| AS53542US | MESNET - MERCHANT ESOLUTIONS, INC. | 512 | — | 2 |
| AS14057US | TFIC-1 - TENNESSEE FARMERS MUTUAL INSURANCE COMPANY | 512 | — | 2 |
| AS33141US | NOCSERVICES - NOC SERVICES CORP. | 512 | — | 2 |
| AS393941US | PRIMARY-AS393941 - Flying Man Studio, LLC. | 512 | 25 | 12 |
| AS402084US | AES-LLC-01 - AES Services LLC | 512 | 1 | 3 |
| AS33159US | NSPNET1 - Nature's Sunshine Products, Inc. | 512 | — | 1 |
| AS27291US | CDS - Century Data Service, Inc | 512 | — | 2 |
| AS36577US | KCRA-TV - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS14149US | ICONFITNESS-MAIN - Icon Health & Fitness Inc | 512 | — | 2 |
| AS18758US | ADRECOM - Adrecom | 512 | — | 2 |
| AS394697US | VSLR - Vivint Solar | 512 | — | 1 |
| AS401256US | WKKC-NETWORKEDGE-ASN - WK Kellogg Business Services LLC | 512 | — | 2 |
| AS23239US | JAVELINA - Irongrove LLC | 512 | 2 | 4 |
| AS393917US | CVE - Cache Valley Electric Company | 512 | — | 2 |
| AS55057US | CHI-ILAG - Office of the Illinois Attorney General | 512 | — | 2 |
| AS20217US | PERCEPTA-GW1-AS - Percepta | 512 | — | 2 |
| AS393914US | INVITAE-01 - Invitae Corp | 512 | — | 2 |
| AS12238US | AECOM - AECOM | 512 | — | 1 |
| AS13554US | TPS-TX-AS - Tenaska Power Services, Co. | 512 | — | 2 |
| AS27023US | NTT-DATA-INC - NTT Data Inc | 512 | — | 2 |
| AS62774US | CLEVELAND-BROWNS - Cleveland Browns | 512 | — | 2 |
| AS398883US | WINGMAN-IT-SERVICES - Wingman IT Services | 512 | 16 | 3 |
| AS26246US | CNHIN-NAFTA - CNH INDUSTRIAL AMERICA LLC | 512 | — | 2 |
| AS15331US | BCI-LAB - Blackfoot Telephone Cooperative, Inc. | 512 | 256 | 2 |
| AS394932US | MOUNTAIN-INET-TFP - Mountain iNet, Inc. | 512 | — | 2 |