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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. | 217.9M | 23,731 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,300 |
| 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.
32,144 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 | 3,838 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,995 |
| AS701US | UUNET - Verizon Business | 43.6M | 995 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,313 |
| 42.8K |
| 131.1K |
| 37 |
| AS4314US | NTSC-ASN2 - Vexus Fiber | 42.5K | — | 63 |
| AS27446US | AS-ERCBB - ERC Broadband | 42.5K | 65.5K | 15 |
| AS394432US | PEG-SG - PEG TECH INC | 42.5K | — | 25 |
| AS27419US | BIGRIVER - Big River Telephone Company, LLC | 42.5K | — | 10 |
| AS25977US | HCCS - HOUSTON COMMUNITY COLLEGE SYSTEM | 42.5K | — | 44 |
| AS5033US | AS5033 - Key Information Systems, Inc. | 42.5K | — | 13 |
| AS3810US | VWMX-AS - Volkswagen Group of America, Inc. | 42.5K | — | 13 |
| AS25876US | LADWP-INTERNET - Los Angeles Department of Water & Power | 42.5K | — | 29 |
| AS395383US | DATAVERGE - Cologuard | 42.5K | 65.5K | 25 |
| AS399610US | AMS-HST - HEWLETT PACKARD ENTERPRISE COMPANY | 42.5K | — | 9 |
| AS204957US | GREENFLOID-AS ROUTE 95 LLC | 42.2K | 983K | 161 |
| AS393552US | COL-LPC - Longmont Power & Communications | 42.2K | 65.5K | 27 |
| AS14955US | N-V-C - Northern Valley Communications LLC | 42K | — | 38 |
| AS1982US | ASN-NWNEXUS - Northwest Nexus Inc. | 42K | — | 7 |
| AS26292US | ASN-SHREWS - Shrewsbury Electric and Cable Operations | 42K | 65.5K | 21 |
| AS399049US | JW-FLASHFIBER-01 - Joe Wheeler EMC | 42K | 69.6K | 46 |
| AS23308US | UTILITY-AS - UTILITY TELEPHONE, INC. | 42K | 65.5K | 17 |
| AS395582US | GRM-NETWORK - Grand River Mutual Telephone Corporation | 42K | 65.5K | 85 |
| AS10821US | PIONEERINTERNET - The Pioneer Telephone Association, Inc. | 41.7K | — | 26 |
| AS397575US | ASCENSION-TECHNOLOGIES - Ascension Technologies | 41.5K | — | 5 |
| AS14860US | AS-SMARTCOM - SMARTCOM TELEPHONE, LLC | 41.5K | 135.2K | 30 |
| AS398378US | BOOST-MOBILE - Boost Mobile | 41.5K | 3 | 30 |
| AS54032US | SEATTLEPACIFICUNIV - Seattle Pacific University | 41.5K | — | 11 |
| AS30517US | GREAT-LAKES-COMNET - Great Lakes Comnet, Inc. | 41.2K | 131.1K | 23 |
| AS12033US | ASN-AT-12033 - Adams TelSystems, Inc. | 41K | 65.5K | 8 |
| AS397976US | CA-1546-ASN-1 - Central Access, Inc. | 41K | — | 12 |
| AS32093US | TACCNET - University of Texas at Austin | 41K | 256 | 3 |
| AS36556US | WAVE-RURAL-CONNECT-LLC - Wave Rural Connect, LLC | 41K | 4.1K | 9 |
| AS32204US | KPUNET - KPU Telecommunications | 41K | — | 37 |
| AS7968US | LOYOLA-UNIV-CHICAGO - Loyola University Chicago | 41K | — | 8 |
| AS6341US | WEC - WEC Business Services LLC | 41K | — | 6 |
| AS18862US | NCS-HEALTHCARE - Omnicare, Inc. | 40.7K | — | 22 |
| AS14148US | EXLIBRIS - Ex Libris (USA) Inc | 40.7K | 6 | 32 |
| AS12213US | CNSQ-AS12213 - Centersquare | 40.7K | 3.8K | 51 |
| AS18701US | PPCO-US - ConocoPhillips Company | 40.4K | — | 43 |
| AS17380US | PROJ-MUT-TEL - Project Mutual Telephone Cooperative Association, Inc. | 40.4K | — | 32 |
| AS30325US | SSTC-NET-1 - South Slope Cooperative Telephone Company | 40.4K | 65.5K | 70 |
| AS19115US | CHARTER-19115-DC - Charter Communications LLC | 40.4K | 577 | 58 |
| AS40294US | CHARTER-40294-DC - Charter Communications LLC | 40.2K | 32 | 20 |
| AS10912US | INTERNAP-BLK - Unitas Global | 40.2K | 65.5K | 41 |
| AS6597US | COLOBLOX - Coloblox Data Centers Inc | 40.2K | 69.6K | 24 |
| AS396122US | BEC-FIBER - BEC Fiber | 40.2K | 65.5K | 81 |
| AS20340US | CALLTOWER - CallTower, Inc. | 40.2K | — | 20 |
| AS30569US | CREIGHTON-AS - Creighton University | 39.9K | — | 48 |
| AS22051US | BTES-AS - Bristol Tennessee Essential Services | 39.9K | — | 81 |
| AS3801US | MISNET - Mikrotec Internet Services | 39.9K | 131.1K | 67 |