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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
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 | 3,136 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 210.5M | 20,695 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS721US | DNIC-ASBLK-00721-00726 - United States Department of Defense (DoD) | 73.1M | 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC |
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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 68.2M |
| 345 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 66.4M | 1,107 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 47.9M | 3,573 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,926 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.2M | 4,508 |
| MDC-EDU - Miami Dade College |
| 131.6K |
| — |
| 5 |
| AS13748US | CSHL - Cold Spring Harbor Laboratory | 131.6K | — | 5 |
| AS11834US | DREXEL-ASN - Drexel University | 131.6K | — | 4 |
| AS5707US | UTHSC-H - The University of Texas Health Science Center at Houston | 131.6K | — | 3 |
| AS5831US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | 131.3K | — | 3 |
| AS1201US | ASN-ODU-AS-AS - Old Dominion University | 131.3K | — | 26 |
| AS1832US | SMU - Southern Methodist University | 131.3K | — | 3 |
| AS365US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 131.3K | 256 | 4 |
| AS3778US | TEMPLE - Temple University | 131.3K | 65.5K | 4 |
| AS14048US | MEMPHIS-EDU - The University of Memphis | 131.3K | — | 4 |
| AS23162US | UKYEDU - University of Kentucky | 131.3K | — | 3 |
| AS30674US | BAYLORU - Baylor University | 131.3K | 65.5K | 11 |
| AS3676US | UIOWA-AS - University of Iowa | 131.3K | 8 | 4 |
| AS21984US | FCPS - Fairfax County Public Schools | 131.3K | — | 6 |
| AS46290US | MTSAC - MtSAC | 131.3K | — | 4 |
| AS29885US | UCHHS-AS - Univeristy of Chicago Hospitals & Health System | 131.3K | — | 4 |
| AS2495US | KANREN - Kansas Research and Education Network | 131.3K | 65.5K | 4 |
| AS2544US | METRO-AS - King County Gov | 131.3K | — | 22 |
| AS1563US | DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD) | 131.3K | — | 3 |
| AS13636US | NECAM-AS - NEC Corporation of America | 131.1K | — | 2 |
| AS33153US | SCAP-AS - The State University of New York at Potsdam | 131.1K | — | 3 |
| AS11318US | GU - Georgetown University | 131.1K | 256 | 4 |
| AS3452US | UAB-AS - University of Alabama at Birmingham | 131.1K | — | 3 |
| AS25656US | OLEMISSS - University of Mississippi | 131.1K | 1 | 4 |
| AS14348US | URI-AS - University of Rhode Island | 131.1K | — | 3 |
| AS10867US | FHDA-AS - Foothill-DeAnza Community College District | 131.1K | — | 3 |
| AS21783US | SILVERNET - State of Nevada | 131.1K | — | 3 |
| AS351US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 131.1K | 768 | 5 |
| AS355US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 131.1K | 256 | 4 |
| AS1701US | AS1701 - National Aeronautics and Space Administration | 131.1K | — | 2 |
| AS32480US | LLUMC - Loma Linda University Medical Center | 131.1K | — | 8 |
| AS10955US | WILPATERSON - WILLIAM PATERSON UNIVERSITY | 131.1K | — | 5 |
| AS19464US | WASHINGTON-AND-LEE - Washington & Lee University | 131.1K | — | 3 |
| AS5739US | UCSC - University of California, Santa Cruz | 131.1K | 65.5K | 3 |
| AS16519US | CUDENVER - University of Colorado Denver | 131.1K | 256 | 3 |
| AS16US | LBL - Lawrence Berkeley National Laboratory | 131.1K | 1 | 3 |
| AS343US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 131.1K | 256 | 3 |
| AS3794US | TAMU - Texas A&M University | 131.1K | 65.5K | 3 |
| AS48US | DNIC-AS-00048 - Navy Network Information Center (NNIC) | 131.1K | 1 | 3 |
| AS11039US | GWU - The George Washington University | 131.1K | 8.2K | 5 |
| AS19530US | NDIN-STATE - State of North Dakota, ITD | 131.1K | 65.5K | 3 |
| AS26046US | USU-EDU - Utah State University | 131.1K | — | 2 |
| AS394673US | 9408 - Milwaukee Area Technical College | 131.1K | — | 3 |
| AS15323US | BSD405 - Bellevue School District #405 | 131.1K | — | 5 |
| AS25969US | SLU - St. Louis University | 131.1K | — | 9 |
| AS14702US | INL-ASN2 - Idaho National Laboratory | 131.1K | 16 | 3 |
| AS16433US | NCTC-ISP - NORTH CENTRAL TELEPHONE COOPERATIVE CORPORATION | 130.3K | 65.5K | 152 |