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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 | 21,162 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,243 |
| 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 | 3,670 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,950 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,372 |
| 256 |
| 1 |
| 2 |
| AS4887US | PORTOFCC - Port of Corpus Christi Authority | 256 | — | 1 |
| AS6292US | MTAPD-GB - MTAPD | 256 | 2 | 3 |
| AS63087US | EBSI - Empyrean Benefit Solutions Inc. | 256 | — | 1 |
| AS13372US | FEDERATEDINV - Federated Investors | 256 | — | 1 |
| AS394286US | CITY-OF-JOHNSON-CITY - City of Johnson City | 256 | — | 1 |
| AS27306US | MTASCUTNEYHOSPITALANDHEALTHCENTER - Dartmouth Hitchcock Medical Center | 256 | — | 1 |
| AS36151US | ACUOA-NET - The Alta Condominium Unit Owner's Association | 256 | — | 1 |
| AS36434US | EPPLP - Enterprise Products Company | 256 | — | 1 |
| AS401280US | TESRHO - TECH SERVE HOSTING LLC | 256 | — | 1 |
| AS18517US | LIMRA-LOMA-LG18 - LL Global Inc | 256 | — | 1 |
| AS31825US | STARWOOD-VO - Starwood Vacation Ownership | 256 | — | 1 |
| AS401387US | TWR-O-1 - TWR Tech, LLC | 256 | — | 1 |
| AS22137US | BCW - Blood Center of Wisconsin, Inc. | 256 | — | 1 |
| AS53783US | MEMORIAL-HEALTH-CARE-SYSTEMS - Memorial Health Care Systems | 256 | — | 1 |
| AS40549US | XPRES-PA - XPRESSBET INC. | 256 | — | 1 |
| AS397424US | WAM-ASN-01 - Weiss Asset Management LP | 256 | — | 1 |
| AS19455US | NORTH-KANSAS-CITY-SCHOOLS - North Kansas City Schools | 256 | — | 1 |
| AS40296US | RUBENSTEIN-COMMUNICATIONS - Rubenstein Associates, Inc. | 256 | — | 1 |
| AS18728US | ISINJ - Instructional Systems Inc. | 256 | — | 1 |
| AS395093US | TSMG7891302 - TECHNOLOGY SERVICES MANAGEMENT GROUP, LLC | 256 | — | 1 |
| AS393557US | PCMC - Park City Municipal Corporation | 256 | — | 1 |
| AS46194US | SPECTRUM-EVERSTREAM-CITYSC - St Louis CITY SC | 256 | — | 1 |
| AS399106US | TERIDION2 - Teridion inc | 256 | — | 1 |
| AS40769US | FIDELIS-GROUP - 22-3791112 | 256 | — | 1 |
| AS12101US | PRS-ARIN-ASN - PROGRESS RAIL SERVICES Corporation | 256 | — | 1 |
| AS398746US | HARRIS-AS-01 - HARRIS & HARRIS, LTD. | 256 | — | 1 |
| AS399919US | AS-ALOMERE-HEALTH - Alomere Health | 256 | — | 1 |
| AS27291US | CDS - Century Data Service, Inc | 256 | — | 1 |
| AS402018US | CONCENTRATE-01 - Concentrate AI, Inc. | 256 | 256 | 2 |
| AS40492US | PACSEAFOOD - Pacific Seafood Group | 256 | — | 1 |
| AS63057US | AXINN - Axinn, Veltrop & Harkrider LLP | 256 | — | 1 |
| AS54575US | SUKUT-ASN - SUKUT CONSTRUCTION, INC | 256 | — | 1 |
| AS21607US | LAZERWARE-INC - LAZERWARE INC | 256 | — | 1 |
| AS11303US | DATARETURN - Verizon Business | 256 | — | 1 |
| AS26645US | ODECASN - Old Dominion Electric Cooperative | 256 | — | 1 |
| AS401598US | PANCHAL-ASN-01 - Panchal LLC | 256 | 256 | 2 |
| AS397040US | SUPN-INT - Supernus Pharmaceuticals, Inc. | 256 | — | 1 |
| AS26371US | SWMC - Peace Health | 256 | — | 1 |
| AS399505US | EBNHC-AS - East Boston Neighborhood Health Center | 256 | — | 1 |
| AS33323US | JABIL-AS-AMSU-PH - Jabil | 256 | — | 1 |
| AS54786US | ACT-ASN - ACT Education Corp. | 256 | — | 1 |
| AS398261US | MCCC-MONROE-MI - Monroe County Community College | 256 | — | 1 |
| AS395790US | SMECO-ASN - SOUTHERN MARYLAND ELECTRIC COOPERATIVE INC | 256 | — | 1 |
| AS30715US | Q9-AS-KML1 - Equinix, Inc. | 256 | — | 1 |
| AS29875US | CPLSW-AS - Clinical Pathology Laboratories | 256 | — | 1 |
| AS394000US | PRIMENET - Primenet LLC | 256 | — | 1 |