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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 | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,661 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,361 |
| 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.
32,363 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 | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,490 |
| 512 |
| — |
| 2 |
| AS13779US | BASISTECH - Basis Technology | 512 | — | 2 |
| AS3630US | NYSERNET-BLK - NYSERNet | 512 | 1 | 3 |
| AS46571US | USNEWS - U.S. News & World Report, L.P. | 512 | — | 2 |
| AS42495US | Spencer-Sharkey Spencer Sharkey | 512 | — | 2 |
| AS13803US | E-SYNCNET - CRC Inc. | 512 | — | 2 |
| AS17391US | CPWR-DTW-ASN01 - BMC Software, Inc. | 512 | — | 2 |
| AS400990US | SU-ASN-01 - Shepherd University | 512 | — | 2 |
| AS19442US | AGILENT-SCS - Agilent Technologies, Inc. | 512 | — | 2 |
| AS11466US | ANDREWS-FEDERAL1 - Andrews Federal Credit Union | 512 | — | 2 |
| AS399216US | PACIRA-ASN - PACIRA PHARMACEUTICALS, INC. | 512 | — | 2 |
| AS35963US | GREENVILLE-SPARTANBURG-AIRPORT-COMMISSION - Greenville-Spartanburg Airport Commission | 512 | — | 2 |
| AS36350US | AS-DEVEREUX - The Devereux Foundation | 512 | — | 2 |
| AS5958US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | 512 | — | 2 |
| AS395828US | ROAMABILITY - ROAMABILITY LLC | 512 | — | 2 |
| AS394845US | REMPREX-BGP - REMPREX, LLC | 512 | — | 2 |
| AS395634US | DOUGLAS-COUNTY - Douglas County Government | 512 | — | 2 |
| AS18766US | PHJW-LLP - Paul, Hastings, Janofsky & Walker LLP | 512 | — | 2 |
| AS54997US | PURDUE-FW - Purdue University | 512 | — | 2 |
| AS398790US | GO-DADDY-COM-LLC - GoDaddy.com, LLC | 512 | — | 2 |
| AS18829US | GALAXY-CONTROL-SYSTEMS - Galaxy Control Systems | 512 | — | 2 |
| AS55208US | NAVITUS - Navitus Health Solutions, LLC | 512 | — | 2 |
| AS20204US | NOVOLINK-HOUSTON - NovoLink Communications, Inc. - Houston | 512 | — | 2 |
| AS22032US | ORC-KEYLARGO - Ocean Reef Club, Inc. | 512 | — | 2 |
| AS395036US | CITYOFSANIBEL - City of Sanibel | 512 | — | 2 |
| AS596US | CENTURYLINK-LEGACY-LVLT-596 - Level 3 Parent, LLC | 512 | — | 1 |
| AS54199US | FRISCOTEXAS - City of Frisco | 512 | — | 2 |
| AS14428US | POMEROY-TECH-01 - Pomeroy Technologies LLC | 512 | — | 2 |
| AS395420US | JAS - JAS Worldwide Management, Inc. | 512 | — | 2 |
| AS400145US | GLADIUS-DC-01 - Gladius Technology Solutions, LLC | 512 | — | 2 |
| AS394336US | PINNACLEBANK - Pinnacle Data Services, LLC | 512 | — | 2 |
| AS19085US | TGNA-KSDK - TEGNA Inc. | 512 | — | 2 |
| AS29943US | UNITEDSOLUTIONS - United Solutions Company | 512 | — | 2 |
| AS401648US | EVERI GAMES - Everi Games Inc. | 512 | — | 2 |
| AS29764US | AMETEK-CTC - AMETEK Inc. | 512 | — | 2 |
| AS397007US | STRATACACHE - Stratacache Inc. | 512 | — | 2 |
| AS397108US | WNMC - WNM Communications | 512 | — | 2 |
| AS46369US | TGNA-KUSA-KTVD - TEGNA Inc. | 512 | — | 2 |
| AS36856US | MOZILLA-MDC1 - Mozilla Corporation | 512 | 3 | 3 |
| AS32304US | AS-NATUSMED - Natus Medical Inc. | 512 | — | 2 |
| AS400648US | NATURALWIRELESS - Natural Wireless, LLC | 512 | — | 1 |
| AS21985US | MASCO-CONTRACTOR-SERVICES - Masco Contractor Services | 512 | — | 2 |
| AS402604US | QUEENSVALE - Queensvale | 512 | 5.2M | 12 |
| AS396947US | SMWC-ASN-1 - Saint Mary of the Woods College | 512 | — | 2 |
| AS18772US | SKY-LAKES-MEDICAL-CENTER - Sky Lakes Medical Center, Inc. | 512 | — | 1 |
| AS12219US | MILLERS-SUPPLIES-AT-WORK-INC - Miller's Supplies at Work | 512 | — | 2 |
| AS21907US | SHAIKH-CORP - Southern Data Center | 512 | 16.4K | 2 |