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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,681 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,370 |
| 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.
32,364 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 236 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,914 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,047 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,503 |
| 256 |
| — |
| 1 |
| AS54345US | FARM-BUREAU-MUTUAL-INSURANCE-OF-IDAHO-01 - FARM BUREAU MUTUAL INSURANCE COMPANY OF IDAHO | 256 | 1 | 2 |
| AS4505US | WHDH-BOS - WHDH-TV | 256 | — | 1 |
| AS395223US | DIRECTV-ENGINEERING-VPL - DIRECTV, LLC | 256 | — | 1 |
| AS393407US | FLORESVILLE-ISD - Floresville ISD | 256 | — | 1 |
| AS47244US | IXGATE MEDIA PLUS SOLUTION INC | 256 | — | 1 |
| AS32447US | MARTI-AS - MARTIN RESOURCE MANAGEMENT CORP. | 256 | — | 1 |
| AS32197US | SEDC-ATL1-US - Meridian Cooperative, Inc. | 256 | — | 1 |
| AS400627US | DGH-PUBLIC - Dayton General Hospital | 256 | — | 1 |
| AS396078US | DIGITALREALTY-IT-01 - Digital Realty Trust, L.P. | 256 | — | 1 |
| AS400121US | CFBTEL - CFBTEL | 256 | — | 1 |
| AS14047US | FERRIS-MFG-CORP - Ferris MFG Corp | 256 | — | 1 |
| AS394747US | NCAA-NATIONAL-OFFICE - National Collegiate Athletic Association (NCAA) | 256 | — | 1 |
| AS400645US | AXXESS-NETWORKS2 - Axxess Networks LLC | 256 | — | 1 |
| AS397730US | MILDPANIC2 - coresdev, LLC | 256 | 32 | 3 |
| AS46827US | SPECTRA-LABORATORIES-EAST - Spectra Laboratories | 256 | — | 1 |
| AS399293US | HOLASN - Hollingsworth Logistics Group LLC | 256 | — | 1 |
| AS32843US | CITYOFHAYWARDCA - CITY OF HAYWARD | 256 | — | 1 |
| AS53946US | HMNMH - Henry Mayo Newhall Memorial Hospital | 256 | — | 1 |
| AS394327US | OCTAPHARMAPLASMA-1 - Octapharma Plasma, Inc. | 256 | — | 1 |
| AS12195US | RFXVI-01 - RFX Inc | 256 | — | 1 |
| AS35853US | AS35853 - SLUMBERLAND, INC. | 256 | — | 1 |
| AS398838US | STRAUB-COLLABORATIVE - Straub Collaborative, Inc. | 256 | 1 | 2 |
| AS16480US | FHMI - FLOYD HEALTHCARE MANAGEMENT, INC. | 256 | — | 1 |
| AS29961US | MADISON-COUNTY-COMMISSION-AL - Madison County Commission | 256 | — | 1 |
| AS21672US | CES-HQPA-01 - Customized Energy Solutions, Ltd. | 256 | — | 1 |
| AS398364US | ERICSSON-EFN - Ericsson Inc. | 256 | — | 1 |
| AS26013US | AMU-FL - Ave Maria University | 256 | — | 1 |
| AS397590US | MBBC-AS-01 - Milwaukee Brewers Baseball Club, LP | 256 | — | 1 |
| AS393377US | JJKA-PUB1 - J. J. Keller & Associates, Inc. | 256 | — | 1 |
| AS63336US | ADVENTIST-HEALTHCARE-MARYLAND - Adventist Healthcare | 256 | — | 1 |
| AS36582US | EVMAGDIA-LT-CL - Magnetar Capital LLC | 256 | 1 | 2 |
| AS54824US | ITSINC-SHAZAMNETWORK - ITS, INC. | 256 | — | 1 |
| AS399454US | GLS-NSH1-01 - Global Linking Solutions | 256 | 1 | 2 |
| AS14208US | BUDCO-PSC - BUDCO | 256 | — | 1 |
| AS36862US | AS36862 - Green Mountain Technology, LLC | 256 | — | 1 |
| AS12017US | PRM-078 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS36258US | GEM-SHOPPING-NETWORK - GEM SHOPPING NETWORK | 256 | — | 1 |
| AS19427US | AS19427 - JBFCS | 256 | — | 1 |
| AS398903US | NETOPS-01 - Double K Technologies, LLC | 256 | — | 1 |
| AS401785US | DATA -SAFE-SERVICES - Data Safe Services LLC | 256 | — | 1 |
| AS55146US | BGWAT - NUCOR BUILDING SYSTEMS SALES CORPORATION | 256 | — | 1 |
| AS397632US | MOHAVEC-COUNTY - Mohave County AZ | 256 | — | 1 |
| AS394095US | LUCASMUSEUM-BGP-2024 - Lucas Museum of Narrative Art | 256 | — | 1 |
| AS393583US | KIRKLAND-ELLIS-CH - Kirkland & Ellis LLP | 256 | — | 1 |
| AS32643US | RDI - RESOURCE DATA, INC. | 256 | — | 1 |
| AS403092US | HOSTRAM - HOSTRAM | 256 | — | 1 |