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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 |
| 2.6K |
| — |
| 8 |
| AS25940US | TIBCO - TIBCO Software Inc. | 2.6K | — | 10 |
| AS398300US | OCIENT-INC - OCIENT INC | 2.6K | — | 8 |
| AS402394US | VUEDGE - Vuedge | 2.6K | 1.6M | 13 |
| AS22838US | GIONA-US - CONOPCO, INC. | 2.6K | — | 10 |
| AS33633US | USG-CORPORATION - USG Corporation, Inc. | 2.6K | — | 5 |
| AS13602US | I-EVOLVE-TECHNOLOGY-SERVICES-VTC - I-Evolve Technology Services | 2.6K | 4 | 14 |
| AS399869US | MTNBB - Visionary Communications LLC | 2.6K | — | 3 |
| AS401483US | NAMESPACELABS - Namespace Labs | 2.6K | — | 10 |
| AS39942US | LIU-AS - Lincoln Intermediate Unit 12 | 2.6K | — | 7 |
| AS11250US | TRI-STATE-G-AND-T - Tri-State Generation and Transmission Association Inc. | 2.6K | 256 | 11 |
| AS1818US | DIALKENTUCKY - DIALOG TELECOMMUNICATIONS, INC. | 2.6K | — | 9 |
| AS26470US | WPP-IT-PISCATAWAY - Group M Worldwide, LLC | 2.6K | 1 | 11 |
| AS31746US | FANDM - Franklin and Marshall College | 2.6K | — | 3 |
| AS41041US | VCLK-EU-SE Conversant LLC | 2.6K | 272 | 5 |
| AS13968US | CAISO-NET-BLK - CALIFORNIA ISO | 2.6K | — | 10 |
| AS30016US | AS01-NATC-4-NA - North American Telecommunications Corporation | 2.6K | — | 10 |
| AS19878US | MEDIMPACT - MedImpact Healthcare Systems, Inc. | 2.6K | — | 8 |
| AS396892US | NSIADMIN - University of Indianapolis | 2.6K | — | 4 |
| AS394772US | ALSAC - American Lebanese Syrian Associated Charities, Inc. | 2.6K | — | 4 |
| AS218320US | NW-LLC NORTHERN WIRELESS SERVICES LLC | 2.6K | — | 10 |
| AS18491US | VTLA - NTT Global Networks Incorporated | 2.6K | — | 10 |
| AS19155US | VYSTARCU - Vystar Credit Union | 2.6K | — | 3 |
| AS395177US | VFNLLC - Viaero Fiber Networks, LLC | 2.6K | — | 3 |
| AS396922US | TGRID-AS - Cisco Systems, Inc. | 2.6K | 10 | 20 |
| AS27015US | FMCH-27015 - FRESENIUS MEDICAL CARE HOLDINGS, INC | 2.6K | — | 7 |
| AS39987US | KISD-ORG - Kent Intermediate School District | 2.6K | — | 10 |
| AS401486US | RAVNIX - RAVNIX LLC | 2.6K | 65.8K | 9 |
| AS399932US | TEKVLABS-0804 - Tekvizion PVS, Inc. | 2.6K | 1 | 5 |
| AS29706US | MIXEDSIGNAL - ExpressDial Internet Inc. | 2.6K | — | 3 |
| AS22513US | CHARTER-22513-WA-OR-C3 - Charter Communications LLC | 2.6K | 288 | 4 |
| AS398059US | SUNY-PURCHASE - State University New York Purchase College | 2.6K | — | 7 |
| AS54650US | PWZCOM-AMA - Pathwayz Communications, Inc. | 2.6K | 65.5K | 11 |
| AS396940US | HTH1 - HTH | 2.6K | — | 10 |
| AS29897US | ATG-COMMUNICATIONS-LLC - ATG Communications, LLC | 2.6K | — | 7 |
| AS54769US | ENSEVA - Enseva LLC. | 2.6K | — | 10 |
| AS18854US | RADWEB-NA-01 - RadWeb, LLC | 2.6K | 16.4K | 13 |
| AS62766US | SJBCOM-01 - SJB Communications | 2.6K | 16 | 4 |
| AS397303US | WELINK-COMMUNICATIONS-01 - WeLink Communications, Inc. | 2.6K | 5.1K | 21 |
| AS46903US | AS-RCH1-1 - Athenahealth | 2.6K | — | 4 |
| AS22966US | GOSHEN-COLLEGE - Goshen College | 2.6K | 1 | 4 |
| AS18961US | MCLANECO - McLane Company, Inc. | 2.6K | — | 8 |
| AS23222US | CHARTER-23222-RENO-C3 - Charter Communications LLC | 2.6K | 288 | 4 |
| AS19950US | CBNEPTUNE-AS-19950 - CB Neptune Holdings, LLC | 2.6K | — | 9 |
| AS55189US | THRIVE-EAST2 - Thrive Operations, LLC | 2.6K | — | 9 |
| AS12147US | DFS-RWD - Discover Financial Services | 2.6K | — | 10 |
| AS32893US | OGE - Oklahoma Gas & Electric Co. | 2.6K | — | 3 |