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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 | 24,540 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,305 |
| 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.
32,187 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 | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,362 |
| 256 |
| — |
| 1 |
| AS54419US | LIGHTPATH-PHOENIX - Cablevision Lightpath LLC | 256 | 1 | 2 |
| AS214127US | JINK-HOSTING Jink Hosting LLC | 256 | — | 1 |
| AS21931US | THOMSON-REUTERS - Thomson Reuters U.S. LLC | 256 | — | 1 |
| AS46622US | ARMSTRONG-ENTERPRISE-COMMUNICATIONS - Armstrong Enterprise Communications, Inc. | 256 | — | 1 |
| AS27344US | READING-HOSPITAL - Reading Hospital | 256 | — | 1 |
| AS31780US | TRINITYPARTNERSWALTHAMCONNECTION - TRINITY PARTNERS | 256 | — | 1 |
| AS400020US | GRANTEP-ASN - Grant Supplies | 256 | — | 1 |
| AS30208US | CASSCLAY - Cass Clay Wireless | 256 | — | 1 |
| AS400472US | COMPANION-CORP - Companion Corporation | 256 | — | 1 |
| AS53931US | TALQ-NET-01 - Talquin Electric Coop, Inc | 256 | — | 1 |
| AS213007US | Puget-Sound-Networks-Lab Puget Sound Networks, LLC | 256 | 1 | 2 |
| AS46881US | ACMH-HOSPITAL - ACMH Hospital | 256 | — | 1 |
| AS26939US | NRNET - NeoRoute Networks LLC | 256 | 4.1K | 2 |
| AS394062US | COLLEGE-FOUNDATION-INC - College Foundation, Inc. | 256 | — | 1 |
| AS395640US | APSU-ASN - Austin Peay State University | 256 | — | 1 |
| AS54663US | HALIFAXHEALTH-WEBAPPS - Halifax Health | 256 | — | 1 |
| AS1861US | DISN-PILOTNET7 - RTX BBN Technologies, Inc. | 256 | — | 1 |
| AS27031US | SCNM-TEMPE-1 - Southwest College of Naturopathic Medicine & Health Sciences Inc. | 256 | — | 1 |
| AS46631US | CITYOFWHEATON - City of Wheaton | 256 | — | 1 |
| AS14631US | EMPIREPAPER-WF - Empire Paper Company | 256 | — | 1 |
| AS13374US | DYC-DYU - D'Youville College | 256 | — | 1 |
| AS394824US | CBU - Christian Brothers University | 256 | — | 1 |
| AS11418US | LIGHTEDGE-AS-03 - LightEdge Solutions | 256 | 4.1K | 2 |
| AS15012US | TRIOLAB - NextStage Innovations LLC | 256 | — | 1 |
| AS393693US | EA-BOGOTA - Electronic Arts, Inc. | 256 | — | 1 |
| AS46940US | AS46940 - IAC/InterActiveCorp | 256 | — | 1 |
| AS401270US | TVH-PARTS-US - TVH Parts Co. | 256 | — | 1 |
| AS18900US | CQG-INC - CQG, Inc. | 256 | — | 1 |
| AS20261US | MSA-CORP - Medical Services of America | 256 | — | 1 |
| AS6434US | PIERPONTSECURITIES - Amherst Pierpont Securities | 256 | — | 1 |
| AS393848US | IKEA-NA-AS - IKEA North America Services, LLC | 256 | — | 1 |
| AS400919US | AKARDAM-NET - Akardam Networks | 256 | 4 | 5 |
| AS396536US | SENTRACAM - SentraCam | 256 | — | 1 |
| AS11832US | AS-BANDBCOCO - Bridge & Byte Consulting Co. | 256 | 3 | 4 |
| AS22425US | FL-AS - Finish Line | 256 | — | 1 |
| AS397697US | WHE-ASN-01 - Wright-Hennepin Cooperative Electric Association | 256 | — | 1 |
| AS42037US | Mozilla-Berlin Mozilla Corporation | 256 | 1 | 2 |
| AS402440US | CYBERWOLF - Cyberwolf | 256 | 2 | 3 |
| AS21851US | KAINOSCOM-SPRINGVALLEY - Kainos Technologies LLC | 256 | — | 1 |
| AS30631US | VIPCONNECTIVITY - VIPConnectivity | 256 | — | 1 |
| AS30577US | CITY-OF-BELLEVUE - City of Bellevue IT Dept | 256 | — | 1 |
| AS22583US | CBOE - Cboe | 256 | — | 1 |
| AS398275US | YCFLD - Yavapai County Free Library District | 256 | — | 1 |
| AS19862US | BNB-22-AS - Bridgehampton National Bank | 256 | — | 1 |
| AS63137US | DOMDIAGASN211 - Dominion Diagnostics, LLC | 256 | — | 1 |
| AS16408US | LN-DREWU-ASN - Los Nettos | 256 | — | 1 |