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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) |
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 |
| 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 |
| CALVIN-UNIVERSITY - Calvin College |
| 66K |
| — |
| 3 |
| AS1206US | PSCNET-HS-AS - Pittsburgh Supercomputing Center | 66K | — | 3 |
| AS6366US | PDXNET - Portland State University | 66K | 65.5K | 4 |
| AS21798US | INTERNATIONALDELIVERS - International Truck and Engine Corp | 66K | — | 3 |
| AS54257US | VSC-AS-VERMONT-STATE-COLLEGES - Vermont State Colleges | 66K | — | 3 |
| AS14827US | WSDOT-ASN - Washington State Department of Transportation | 66K | — | 2 |
| AS20249US | AS20249 - Jefferies LLC | 66K | — | 51 |
| AS327US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 66K | 256 | 4 |
| AS18815US | AS-CITY-AND-COUNTY-OF-DENVER - CITY AND COUNTY OF DENVER | 66K | — | 3 |
| AS13829US | PIMACOUNTY - Pima County | 66K | — | 3 |
| AS7050US | UW-MILWAUKEE-AS1 - University of Wisconsin - Milwaukee | 66K | 65.5K | 4 |
| AS19184US | UWECNET - University of Wisconsin - Eau Claire | 66K | — | 3 |
| AS22700US | USFCA - University of San Francisco | 66K | — | 4 |
| AS22845US | VIRGINIA-COMMUNITY-COLLEGE-SYSTEM - Virginia Community College System | 66K | — | 3 |
| AS18980US | PEACEHEALTH - Peace Health | 66K | — | 3 |
| AS401422US | ASNCOBBCOUNTY - Cobb County Government | 66K | — | 3 |
| AS3482US | MTSTGOV - State of Montana | 66K | — | 3 |
| AS26462US | AS-GENESEO - The State University of New York College at Geneseo | 66K | 1 | 3 |
| AS7386US | ILLINOIS-STATE-UNIV - Illinois State University | 65.9K | — | 3 |
| AS395501US | REED-AS-1 - The Reed Institute | 65.8K | — | 2 |
| AS10662US | NORFOLK-SOUTHERN - Norfolk Southern Corporation | 65.8K | — | 2 |
| AS15173US | NEWMA-11 - Newmarket Corporation | 65.8K | — | 2 |
| AS11540US | RTI - Research Triangle Institute | 65.8K | 1 | 3 |
| AS18791US | TCU - Texas Christian University | 65.8K | — | 2 |
| AS3671US | SLAC - SLAC National Accelerator Laboratory | 65.8K | 16 | 3 |
| AS30679US | CPPNET - California State Polytechnic University - Pomona | 65.8K | 1 | 3 |
| AS13783US | RADFORD-UNIV-AS - Radford University | 65.8K | — | 2 |
| AS22089US | HALLMARK - Hallmark Cards Inc. | 65.8K | — | 2 |
| AS46298US | HCHD-AS - Harris County Hospital District | 65.8K | — | 2 |
| AS14223US | NYSDOH - New York State Department of Health | 65.8K | — | 2 |
| AS14319US | FURMAN-2 - Furman University | 65.8K | — | 2 |
| AS1224US | NCSA-AS - University of Illinois | 65.8K | 1 | 3 |
| AS33343US | HCHBNET - U.S. Department of Commerce, HQ and ITA | 65.8K | 2K | 4 |
| AS3446US | KANSAS - State of Kansas | 65.8K | — | 2 |
| AS10561US | BRANDEIS - Brandeis University | 65.8K | — | 2 |
| AS29899US | GEISINGER - Geisinger System Services | 65.8K | 256 | 3 |
| AS323US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 65.8K | 256 | 3 |
| AS1358US | HNSNET-AS - Hughes Network Systems, LLC | 65.8K | — | 8 |
| AS8036US | UTULSA-AS - University of Tulsa | 65.8K | 256 | 4 |
| AS545US | NRI - Corporation for National Research Initiatives | 65.8K | 16 | 3 |
| AS399315US | INDSTATE - Indiana State University | 65.8K | — | 2 |
| AS15295US | UNC-1388600-ASN - University of Northern Colorado | 65.8K | — | 2 |
| AS322US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 65.8K | 256 | 3 |
| AS34US | UDELNET - University of Delaware | 65.8K | 65.5K | 3 |
| AS400943US | UNO-CSCI-LONI - University Of New Orleans | 65.8K | — | 2 |
| AS393649US | BOOZ-AS2 - Booz Allen Hamilton Inc. | 65.8K | — | 2 |
| AS25968US | SELUNET - Southeastern Louisiana University | 65.8K | — | 2 |