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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 | 23,666 |
| 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) | 73.1M | 234 |
| 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 | 4,491 |
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.
| AS | Holder | IPv4 ↓ | IPv6 /48 | Prefixes |
|---|---|---|---|---|
| AS2650US | EOP-ASN - Executive Office Of The President | 66.6K | — | 5 |
| AS43US | BNL-AS - Brookhaven National Laboratory | 66.6K | 33 | 8 |
| AS395877US | CITYOFTEMPE - City of Tempe, Arizona | 66.6K | — | 2 |
| AS18777US | TEXAS-STATE-UNIVERSITY - Texas State University | 66.6K | — | 5 |
| AS7905US | SOONER-AS - Sooner Technology | 66.6K | — | 4 |
| AS2701US | KSU-NET - Kansas State University | 66.6K | — | 2 |
| AS338US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 66.6K | 256 | 5 |
| AS4544US | NAVE-CONX-A - Navisite Opco LLC | 66.6K | — | 12 |
| AS33523US | ROWANUNIVERSITY - Rowan University | 66.6K | — | 4 |
| AS84US | DNIC-AS-00084 - Navy Network Information Center (NNIC) | 66.6K | 1 | 6 |
| AS4130US | UPITT-AS - University of Pittsburgh | 66.6K | 66 | 6 |
| AS32064US | AMUAS1 - American University | 66.6K | 16 | 5 |
| AS53380US | LGCNS-AS - LG CNS America Inc. | 66.6K | — | 5 |
| AS11827US | WSU-PUL-AS - Washington State University | 66.6K | 256 | 16 |
| AS25640US | HAWAII-DEPT-OF-EDUC - Hawaii Department of Education | 66.6K | — | 5 |
| AS11052US | IHC-NET - Intermountain Health Care, Inc. | 66.3K | — | 3 |
| AS8122US | DQNAS - Duquesne University | 66.3K | — | 4 |
| AS20452US | BSU - BALL STATE UNIVERSITY | 66.3K | 1 | 4 |
| AS23171US | MANHATTAN-EDU - Manhattan College | 66.3K | 1 | 5 |
| AS33274US | ASN-FAIRVIEWHEALTHSERVICES - Fairview Health Services | 66.3K | — | 4 |
| AS32513US | BATTELLE-MEMORIAL-INSTITUTE - BATTELLE MEMORIAL INSTITUTE | 66.3K | — | 4 |
| AS339US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 66.3K | 256 | 5 |
| AS33235US | SANJUAN - San Juan Unified School District | 66.3K | — | 3 |
| AS1747US | IBMWATSON-AS - IBM | 66.3K | — | 4 |
| AS2384US | AOCNET - Architect of the Capitol | 66.3K | — | 4 |
| AS62757US | RISD-ASN - Richardson Independent School District | 66.3K | — | 4 |
| AS11090US | MTAONLINE-AS - Matanuska Telecom Association, Incorporated | 66.3K | 65.5K | 40 |
| AS11205US | CITY-OF-PHILADELPHIA - City of Philadelphia | 66.3K | — | 3 |
| AS26817US | MICROC-ASN - Microchip Technology Inc. | 66.3K | — | 4 |
| AS32895US | MILLIKEN-COMPANY-ASN1 - Milliken & Company | 66.3K | — | 4 |
| AS46520US | CA-DOJ - California Department of Justice | 66.3K | — | 4 |
| AS7212US | VANDERBILT - Vanderbilt University | 66.3K | 65.5K | 5 |
| AS30567US | IGNITE-BROADBAND - Dickson Electric System | 66.3K | 65.5K | 22 |
| AS10364US | UAHNET - University of Alabama in Huntsville | 66.3K | — | 3 |
| AS398813US | MILLERSVILLE-UNIVERSITY - Millersville University of Pennsylvania | 66.3K | 4.1K | 12 |
| AS11348US | MST - Missouri University of Science and Technology | 66.2K | — | 4 |
| AS394917US | SDUSD - San Diego Unified School District | 66K | — | 3 |
| AS22217US | CALVIN-UNIVERSITY - Calvin College | 66K | — | 3 |
| AS46476US | TTUHSC - Texas Tech University Health Sciences Center | 66K | 256 | 5 |
| AS22845US | VIRGINIA-COMMUNITY-COLLEGE-SYSTEM - Virginia Community College System | 66K | — | 3 |
| AS2037US | CSUFRESNO - California State University at Fresno | 66K | — | 2 |
| AS1206US | PSCNET-HS-AS - Pittsburgh Supercomputing Center | 66K | — | 3 |
| AS19184US | UWECNET - University of Wisconsin - Eau Claire | 66K | — | 3 |
| AS21798US | INTERNATIONALDELIVERS - International Truck and Engine Corp | 66K | — | 3 |
| AS47024US | THE-METROHEALTH-SYSTEM - The MetroHealth System | 66K | — | 3 |
| AS14827US | WSDOT-ASN - Washington State Department of Transportation | 66K | — | 2 |
| AS6366US | PDXNET - Portland State University | 66K | 65.5K | 4 |
| AS14209US | UT-CHATTANOOGA - University of Tennessee at Chattanooga | 66K | 1 | 6 |
| AS20249US | AS20249 - Jefferies LLC | 66K | — | 51 |
| AS401422US | ASNCOBBCOUNTY - Cobb County Government | 66K | — | 3 |