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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 | 23,924 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,299 |
| 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.
32,140 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 230 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,881 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,992 |
| AS701US | UUNET - Verizon Business | 43.6M | 995 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,310 |
| CLUBCORP - ClubCorp USA, Inc. |
| 8.2K |
| — |
| 1 |
| AS393869US | CMC - COLORADO MOUNTAIN COLLEGE | 8.2K | 256 | 3 |
| AS46825US | CBPU - Coldwater Board of Public Utilities | 8.2K | 65.5K | 2 |
| AS47003US | ALPS-AS-1 - Littleton Public Schools | 8.2K | — | 1 |
| AS27195US | CAVERN-TECHNOLOGIES - EPIC Alliance, Inc. | 8.2K | 65.5K | 24 |
| AS14157US | GENWORTH-MI - GENWORTH FINANCIAL, Inc. | 8.2K | 260 | 6 |
| AS23030US | UNIVERSITY-OF-HOUSTON---DOWNTOWN - University of Houston - Downtown | 8.2K | — | 1 |
| AS23341US | FITAS - Fashion Institute of Technology | 8.2K | — | 13 |
| AS22911US | SINAP-TIX - SINAP-TIX, LLC | 8.2K | 77.8K | 16 |
| AS400869US | BETHLEHEM-AREA-SCHOOL-DISTRICT - Bethlehem Area School District | 8.2K | — | 1 |
| AS393393US | AISD-AS - Amarillo ISD | 8.2K | — | 17 |
| AS23497US | NCWCOM - NORTH COAST WIRELESS COMMUNICATIONS LLC | 8.2K | — | 32 |
| AS26894US | NOACSC-AS - Northwest Ohio Area Computer Services Cooperative | 8.2K | — | 1 |
| AS399275US | SOLID - Solid Systems LLC | 8.2K | 15 | 47 |
| AS7146US | GABN - Georgia Business Net, Inc | 8.2K | — | 1 |
| AS32162US | CLIU21 - Carbon Lehigh Intermediate Unit 21 | 8.2K | — | 2 |
| AS11970US | ETEL - e-Tel, LLC | 8.2K | — | 1 |
| AS16758US | RICOH USA - Ricoh USA, Inc. | 8.2K | — | 32 |
| AS62814US | ZETA-SACRAMENTO - Zeta Broadband, Inc. | 8.2K | 4.1K | 4 |
| AS11595US | NETSONIC - Netsonic | 8.2K | — | 2 |
| AS393885US | HAVILAND-TEL - Haviland Telephone Company, Inc. | 8.2K | 65.5K | 21 |
| AS400718US | FWCS-ASN-01 - Fort Wayne Community Schools | 8.2K | — | 1 |
| AS394712US | NYSOSC - New York State Office of the State Comptroller | 8.2K | — | 1 |
| AS40944US | MASSCOL - Mass College of Liberal Arts | 8.2K | — | 3 |
| AS33563US | THEMETHODISTHOSPITAL-HOUSTON - The Methodist Hospital | 8.2K | — | 4 |
| AS63483US | SKYNET-AS-1 - Skynet | 8.2K | — | 32 |
| AS20318US | NIACOM - Niacom Holdings, LLC | 8.2K | 65.5K | 2 |
| AS8082US | WORLDSITE - Worldsite Networks | 8.2K | — | 1 |
| AS16954US | TRT-NET - Three River Telco | 8.2K | — | 5 |
| AS6566US | TROWE-NET - T. Rowe Price | 8.2K | — | 17 |
| AS393288US | ZULUINTERNET1 - Zulu Internet, Inc. | 8.2K | — | 17 |
| AS14287US | TRIAD-TELECOM - Triad Telecom, Inc. | 8.2K | — | 20 |
| AS8131US | PEPBOYS - Pep Boys | 8.2K | — | 2 |
| AS32132US | AS-FOCNL-01 - Fiber Optic Cable Network LLC | 8.2K | — | 32 |
| AS21709US | IMPLEX-NET - Implex.net, Inc. | 8.2K | — | 2 |
| AS129US | DNIC-AS-00129 - United States Department of Defense (DoD) | 8.2K | — | 16 |
| AS26748US | AS-HSHS - Hospital Sisters Health Systems | 8.2K | — | 1 |
| AS27192US | COLI-NET - Chain O' Lakes Internet | 8.2K | — | 3 |
| AS15304US | WASHOE-NET - Washoe County | 8.2K | — | 2 |
| AS22601US | BONNPOWERNET - Bonneville Power Administration | 8.2K | 260 | 7 |
| AS19945US | GRANBURYISD - Granbury Independent School District | 8.2K | 64 | 2 |
| AS6266US | ICONN-AS - Iconn LLC | 8.2K | — | 1 |
| AS397057US | FDEC-FIBER - Forked Deer Electric Cooperative, Inc. | 8.2K | — | 2 |
| AS54488US | QXC-COMMUNICATIONS - QxC Communications, Inc. | 8.2K | — | 7 |
| AS7024US | PIXELGATE - PixelGate | 8.2K | — | 1 |
| AS31893US | H5COLO - H5 Colo Associates LLC | 8.2K | — | 4 |
| AS31997US | ZONEALARM-COM - Check Point Software Technologies, Inc. | 8.2K | 1 | 30 |