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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
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 | 24,630 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,307 |
| 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.
32,219 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 233 |
| 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 |
| AS397910US | TSC - AEG | 256 | — | 1 |
| AS401117US | EHL - EQM Holdings LLC | 256 | 1 | 2 |
| AS397851US | SCCC-LIBERAL-01 - Seward County Community College | 256 | — | 1 |
| AS402361US | PEI-99 - Perry | 256 | — | 1 |
| AS30668US | MADISONCOUNTYNY-01 - Madison County New York | 256 | — | 1 |
| AS401200US | SQUARESPACE-CORP-01 - Squarespace, Inc. | 256 | — | 1 |
| AS901US | FSTRF14541 - Frontier Science and Technology Research Foundation, Inc. | 256 | — | 1 |
| AS395880US | BCL-AS1 - Boomerang Communications LLC | 256 | 65.5K | 2 |
| AS40657US | OANDA-1 - OANDA Corporation | 256 | — | 1 |
| AS398080US | TELEVISION-CITY-STUDIOS-LLC - Television City Studios, LLC | 256 | — | 1 |
| AS21721US | BLT-US-01 - Blount International, Inc | 256 | — | 1 |
| AS33145US | ASN-BETHANYBCS - Bethany Christian Services | 256 | — | 1 |
| AS397702US | SSSS - 1776 Solutions, LLC | 256 | 65.5K | 3 |
| AS55266US | FRMC01 - Firelands Regional Medical Center | 256 | — | 1 |
| AS393352US | CITY-OF-LAREDO - CITY OF LAREDO | 256 | — | 1 |
| AS30659US | OCFL-COMPTROLLER - Orange County Comptroller | 256 | — | 1 |
| AS33324US | CHALLENGE-PRINTING - The IMAGINE Group, LLC | 256 | — | 1 |
| AS6248US | DEKA-R-D - DEKA Research & Development Corp | 256 | — | 1 |
| AS36188US | ABL-AS - Alston & Bird, LLP | 256 | — | 1 |
| AS1258US | XKL-NET-AS - XKL, LLC | 256 | — | 1 |
| AS393367US | SJMC-TCHD-3 - Teton County Hospital District | 256 | — | 1 |
| AS398214US | PHP-ASN - Prominence Health Plan | 256 | — | 1 |
| AS55210US | SAMC-HCHA - Southeast Alabama Medical Center | 256 | — | 1 |
| AS400319US | COMPLETEBANKDATA - CompleteBankData.com | 256 | — | 1 |
| AS399131US | CITY-OF-DAYTON-TN-PUBLIC - City of Dayton | 256 | — | 1 |
| AS15079US | IONIC-AS - Ionic Capital Management LLC | 256 | — | 1 |
| AS394254US | BLUESOFTWARE - BLUE SOFTWARE, LLC | 256 | — | 1 |
| AS402704US | TURRETTECH-AS-01 - TURRET. | 256 | 256 | 2 |
| AS1812US | DXC-AS1810-AS1815 - DXC US Latin America Corporation | 256 | — | 1 |
| AS14844US | CITY-OF-KILLEEN-TX-01 - CITY OF KILLEEN | 256 | — | 1 |
| AS27217US | ACN-2 - Jewelry Television | 256 | 3 | 3 |
| AS1553US | DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD) | 256 | — | 1 |
| AS399235US | UPLINK-INTERNET - Uplink L.L.C. | 256 | 256 | 2 |
| AS397684US | CLOUD-TECHNOLOGIES-INC - Cloud Technologies, Inc | 256 | — | 1 |
| AS398235US | BLUE-LOBSTER - Blue Lobster Inc. | 256 | — | 1 |
| AS400989US | YDIO - Ydio LLC | 256 | 1.7K | 28 |
| AS401343US | DUTCHESS-COUNTY-NY-AS - County Of Dutchess, NY | 256 | — | 1 |
| AS910US | NORTA-CANAL - RTA | 256 | — | 1 |
| AS40645US | GWAEA-AS01 - Grant Wood Area Education Agency | 256 | — | 1 |
| AS15082US | OMEG-LCN - OMEGAI | 256 | 18 | 4 |
| AS30555US | VSCP01 - VariSpace Coppell, LLC | 256 | — | 1 |
| AS7850US | TN-ASN-CL - Tarakona Networks, LLC | 256 | — | 1 |
| AS10851US | SJCB - St Johns County BOCC | 256 | 48 | 4 |
| AS32859US | JEGS-HIGH-PERFORMANCE-ASN - JEGS | 256 | — | 1 |
| AS36268US | BUNNY - Bunny & Tomato Interconnect, Inc. | 256 | 1 | 2 |
| AS219106US | EU-VOXIMPLANTINC Voximplant, Inc. | 256 | — | 1 |