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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
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 | 24,543 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,304 |
| 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.
32,174 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 | 3,884 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,999 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,345 |
| 256 |
| — |
| 1 |
| AS402157US | PUPPYGIRL-LABS - Puppygirl Labs LLC | 256 | 4 | 5 |
| AS393830US | MAINE-MUNICIPAL-ASSOCIATION - Maine Municipal Association | 256 | — | 1 |
| AS399460US | HELIUS - Helius | 256 | — | 1 |
| AS10939US | PMG1 - Paxton Media Group, LLC. | 256 | — | 1 |
| AS401684US | RSM22 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS63137US | DOMDIAGASN211 - Dominion Diagnostics, LLC | 256 | — | 1 |
| AS401523US | AUCTIONHARMONY - Auction Harmony | 256 | 1 | 2 |
| AS23232US | DORMAN - Dorman Trading, L.L.C. | 256 | — | 1 |
| AS21645US | ADA-CHICAGO - American Dental Association | 256 | — | 1 |
| AS401178US | UNEPIC-NETWORKS - Unepic Networks | 256 | — | 1 |
| AS394095US | LUCASMUSEUM-BGP-2024 - Lucas Museum of Narrative Art | 256 | — | 1 |
| AS398540US | COMPASS-MINERALS-01 - Compass Minerals America Inc. | 256 | — | 1 |
| AS400937US | DCNV-ASN-01 - Douglas County, Nevada | 256 | — | 1 |
| AS395682US | MANKINNOCBNA - Mankin Media Systems, Inc | 256 | — | 1 |
| AS21511US | NCSBN - NCSBN, Inc. | 256 | — | 1 |
| AS18507US | NYMEX-EXTRANET - NEW YORK MERCANTILE EXCHANGE | 256 | — | 1 |
| AS395491US | RADIAN-GROUP-INC - Radian Group, Inc | 256 | — | 1 |
| AS402193US | UINT8 - UInt8 | 256 | 2 | 3 |
| AS402479US | DECENTRA - Decentra | 256 | — | 1 |
| AS395923US | FROST-SCIENCE-MUSEUM - Patrica and Phillip Frost Museum of Science | 256 | — | 1 |
| AS3472US | DNIC-AS-03472 - United States Department of Defense (DoD) | 256 | — | 1 |
| AS46363US | HOLYFAMILY - Holy Family University | 256 | — | 1 |
| AS398055US | MPS-303-AS - Mapleton School District No. 1 in the county of Adams & St. | 256 | — | 1 |
| AS32843US | CITYOFHAYWARDCA - CITY OF HAYWARD | 256 | — | 1 |
| AS13931US | AS-MH001 - MASONIC CHARITY FOUNDATION OF NEW JERSEY | 256 | — | 1 |
| AS400713US | MAXIM-STAFFING - Amergis Healthcare Staffing, Inc. | 256 | — | 1 |
| AS14756US | LYNX - LYNX COMMUNICATIONS | 256 | 4.1K | 2 |
| AS54687US | IQLUSION - iqlusion | 256 | — | 1 |
| AS63244US | ASG - American Seafoods Company LLC | 256 | — | 1 |
| AS16956US | CATTARAUGUS-COUNTY - Cattaraugus County | 256 | — | 1 |
| AS22509US | BANFIELD - Banfield | 256 | — | 1 |
| AS32325US | EJC-100 - James Campbell Company LLC | 256 | — | 1 |
| AS393687US | DELAWARE-RIVER-AND-BAY-AUTHORITY - Delaware River and Bay Authority | 256 | — | 1 |
| AS399421US | EMI-HEALTH - EDUCATORS MUTUAL INSURANCE ASSOCIATION | 256 | — | 1 |
| AS397843US | ESP - EyeCare Services Partners Management LLC | 256 | — | 1 |
| AS13785US | SMH - SHORE MEMORIAL HOSPITAL | 256 | — | 1 |
| AS396069US | NBC-64-ASN1 - Nazarene Bible College | 256 | 1 | 2 |
| AS399201US | CMPS-AS - Compass Christian Church | 256 | 2 | 3 |
| AS10701US | TNSC - Fiber Plus, Inc | 256 | — | 1 |
| AS400919US | AKARDAM-NET - Akardam Networks | 256 | 4 | 5 |
| AS62678US | HORACEMANNSCHOOL - Horace Mann School | 256 | — | 1 |
| AS394050US | KIRBTECH - Kirbtech LLC | 256 | — | 1 |
| AS53288US | STERICYCLE - STERICYCLE, INC. | 256 | — | 1 |
| AS400392US | EMPIRE-1 - Empire Resorts, Inc. | 256 | — | 1 |
| AS402217US | COASTELECTRIC-01 - Coast Electric | 256 | — | 1 |
| AS14470US | FALLSCHURCHVAGOV - CITY OF FALLS CHURCH | 256 | — | 1 |