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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 |
| ASN-SSA - Social Security Administration |
| 54K |
| 1.8K |
| 19 |
| AS11293US | UCOP-ASN - University of California - Office of the President | 53.8K | — | 19 |
| AS13904US | COSLINK - Cherryland Services Inc | 53.8K | 4.1K | 153 |
| AS400220US | PEARLCOMMFIBER-01 - PearlComm | 53.8K | 65.5K | 86 |
| AS14155US | RURAL-TELEPHONE-SVCCO - Rural Telephone Service Co, Inc. | 53.2K | 65.5K | 17 |
| AS54179US | VCOE - Ventura County Office of Education | 53K | — | 58 |
| AS25609US | DMC - Detroit Medical Center | 53K | — | 30 |
| AS4983US | INTEL-SC-AS - Intel Corporation | 53K | — | 110 |
| AS27501US | ISPNET-AS - isp.net | 53K | — | 76 |
| AS14374US | AGRI-VALLEY - Agri-Valley Services Corporation | 52.7K | 65.5K | 106 |
| AS10352US | WCTC - Solarus | 52.7K | 65.5K | 58 |
| AS398535US | ESUHSD-ASN-1 - EAST SIDE UNION HIGH SCHOOL DIST | 52.5K | — | 5 |
| AS22125US | PFPC - PNC Bank N.A. | 52.5K | — | 44 |
| AS14371US | PBNET - Paul Bunyan Communications | 52.5K | 1M | 13 |
| AS33566US | KUB-FIBER-01 - Knoxville Utilities Board | 52.2K | 37.6K | 87 |
| AS22191US | WILKES-COMM - Wilkes Communications, Inc. | 52.2K | 1.8K | 49 |
| AS33154US | DQECOM - DQE Communications LLC | 52.2K | 65.5K | 27 |
| AS394380US | LEASEWEB-USA-DAL - Leaseweb USA, Inc. | 52.2K | 65.5K | 58 |
| AS4226US | SUMOFIBER - Sumofiber | 52K | 262.1K | 45 |
| AS30688US | FASTTRACK-NET-AS - FastTrack Communications Inc. | 52K | 66.6K | 55 |
| AS15011US | JAGUAR-1 - Jaguar Communications | 51.7K | — | 53 |
| AS18474US | AENEAS - Aeneas Internet Services | 51.5K | 65.5K | 17 |
| AS32181US | ASN-GIGENET - GigeNET | 51.5K | 197.4K | 45 |
| AS2635US | AUTOMATTIC - Automattic, Inc | 51.5K | 48 | 203 |
| AS18501US | JOESD-18501 - CyberCloud Professionals LLC | 51.5K | 131.1K | 123 |
| AS4237US | CSC-IGN-FTW-AS4237 - DXC US Latin America Corporation | 51.2K | — | 13 |
| AS27506US | CROWNCASTLE-AS27506 - Crown Castle Fiber LLC | 51.2K | — | 17 |
| AS11550US | SDL-20-AS - Smithville Digital, LLC | 50.7K | — | 13 |
| AS19504US | WTCC - WTC Communications, Inc. | 50.7K | — | 25 |
| AS33353US | SBS - Sony Interactive Entertainment LLC | 50.4K | 230.2K | 146 |
| AS11499US | WHOI-WOODSHOLE - Woods Hole Oceanographic Institution | 50.4K | — | 9 |
| AS19201US | ETC - Eastex Telephone Cooperative, Inc. | 50.4K | 65.5K | 21 |
| AS13868US | PEAK INTERNET - Peak Internet | 50.4K | 65.5K | 6 |
| AS10971US | CASSCOMM - Cass Cable TV, Inc. | 50.4K | 65.5K | 20 |
| AS15153US | STARWIRELESS-15153 - StarVision, Inc. | 50.4K | 65.5K | 64 |
| AS6282US | FONL-6282 - Fiber Optical Network LLC | 50.2K | — | 89 |
| AS33339US | NEMONT-CELLULAR - Nemont | 49.9K | 65.5K | 124 |
| AS31863US | DACEN-2 - Centrilogic, Inc. | 49.9K | 65.5K | 55 |
| AS401696US | COGNETCLOUD - cognetcloud INC | 49.9K | — | 44 |
| AS2734US | CORESITE - CoreSite | 49.7K | 110.6K | 86 |
| AS1820US | WNET - WNET TELECOM USA Corp. | 49.7K | 594K | 46 |
| AS2923US | AS-TIAA-NET - TIAA-CREF | 49.7K | — | 29 |
| AS11403US | NYINTERNET - NYI | 49.7K | 139.3K | 32 |
| AS397179US | BRIDGEWATER-COLLEGE - Bridgewater College | 49.4K | — | 4 |
| AS167US | WESLEYAN-AS - Wesleyan University | 49.4K | — | 3 |
| AS27138US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | 49.4K | — | 175 |
| AS13979US | ATT-IPFR - AT&T Enterprises, LLC | 49.4K | — | 4 |