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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. | 218.1M | 24,656 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,306 |
| 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.
32,202 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 | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 256 |
| — |
| 1 |
| AS36194US | ONSITE-AS - On Site | 256 | — | 1 |
| AS53825US | ACMC-AS - Alameda Health System | 256 | — | 1 |
| AS402918US | SUPERSEND - SuperSend | 256 | — | 1 |
| AS925US | SIFIBE - SiFibe, LLC | 256 | — | 1 |
| AS401361US | AI-401361 - Andromeda Industries, LLC | 256 | 0 | 2 |
| AS393751US | COUNTY-OF-BERKS - County of Berks | 256 | — | 1 |
| AS54751US | VEDP - Virginia Economic Development Partnership | 256 | — | 1 |
| AS402778US | ATABYTE - Atabyte | 256 | — | 1 |
| AS20349US | CFRDC-MFICORE - Crystal Farms Refrigerated Distribution Company | 256 | — | 1 |
| AS395103US | LUCASFILM-SKYSOUND - Lucasfilm Ltd. LLC | 256 | — | 1 |
| AS23335US | ARKNET-AIRFI - ArkNet AirFi LLC | 256 | — | 1 |
| AS11262US | WH-TRADING - W.H. Trading, L.L.C. | 256 | — | 1 |
| AS23403US | HALFBAT - Half Bat LLC | 256 | 65.5K | 2 |
| AS32859US | JEGS-HIGH-PERFORMANCE-ASN - JEGS | 256 | — | 1 |
| AS26336US | TFHD-INTERNET1 - Tahoe Forest Hospital District | 256 | — | 1 |
| AS23025US | ASNSTL - City of St. Louis | 256 | — | 1 |
| AS401117US | EHL - EQM Holdings LLC | 256 | 1 | 2 |
| AS397773US | ENSCO-INC - ENSCO, Inc. | 256 | — | 1 |
| AS11688US | LTSTREAM - Lightstream Communications, Inc. | 256 | — | 1 |
| AS394186US | SE-BRANDS-01 - Self Esteem Brands, LLC | 256 | 4 | 2 |
| AS393379US | SEI-HOUSTON - Seismic Exchange, Inc. | 256 | — | 1 |
| AS393382US | KERNHEALTHSYSTEMS - Kern Family Health Care | 256 | — | 1 |
| AS401718US | HAULERS-INSURANCE - Haulers Insurance Company Inc. | 256 | — | 1 |
| AS14421US | THERAVANCE - Theravance Biopharma US, LLC | 256 | — | 1 |
| AS16678US | AUSRAD - Austin Radiological Association | 256 | — | 1 |
| AS400316US | MN-ADULT-AND-TEEN-CHALLENGE - Minnesota Adult & Teen Challenge | 256 | 1 | 2 |
| AS400682US | DARKDOT - DarkDot Research, Inc. | 256 | 1 | 2 |
| AS393510US | SFHSH-ASNUMBER - St Francis Healthcare System of Hawaii | 256 | — | 1 |
| AS400131US | QCRH-AS - QCR Holdings, Inc. | 256 | — | 1 |
| AS398711US | QG-AS-1 - Quality Gold, Inc. | 256 | — | 1 |
| AS398714US | PCHC-SPECTRUM-ATT - Asset Protection Management II L.L.C. | 256 | — | 1 |
| AS25642US | SPIDERHOST - The Frohman Group Inc. | 256 | — | 1 |
| AS401703US | ORDINAL-ADV-01 - Ordinal Advisors LLC | 256 | 16 | 2 |
| AS396115US | ILANIRESORT - Ilani Resort | 256 | — | 1 |
| AS63141US | XACTLY-CORP - Xactly Corporation | 256 | — | 1 |
| AS19866US | NPGCO-STJO - News-Press & Gazette Company | 256 | — | 1 |
| AS400861US | 0X7C0 - 0x7c0 Labs LLC | 256 | 2 | 3 |
| AS46769US | TELECAST COMMUNICATIONS - Telecast Communications | 256 | — | 1 |
| AS18461US | BELL-ATL - Verizon Business | 256 | — | 1 |
| AS396496US | DMBA-PRIMARY - Deseret Mutual Benefit Administrators | 256 | — | 1 |
| AS397675US | ASD-WHP-BLOCK - Armstrong School District | 256 | — | 1 |
| AS400545US | CYGNUS-COMMUNICATIONS - Cygnus Communications | 256 | — | 1 |
| AS402769US | PAUL - 13 | 256 | — | 1 |
| AS399384US | MISSION-HILLS-CHURCH - Mission Hills Church | 256 | — | 1 |
| AS398902US | CASS-REGIONAL - Cass Regional Medical Center | 256 | — | 1 |
| AS36197US | COMPUTER-DATA-INC - Computer Data, Inc. | 256 | — | 1 |