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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) | 227.4M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 217.9M | 24,372 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 643 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,322 |
| 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.
32,235 autonomous systems registered to United States. Click an AS for detail.
| 72.9M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,906 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.9M | 2,006 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.7M | 4,275 |
| 49.4K |
| — |
| 101 |
| AS11071US | IW-ASN-11071 - InfoWest | 49.4K | 197.1K | 35 |
| AS167US | WESLEYAN-AS - Wesleyan University | 49.4K | — | 3 |
| AS397179US | BRIDGEWATER-COLLEGE - Bridgewater College | 49.4K | — | 4 |
| AS2734US | CORESITE - CoreSite | 49.7K | 110.6K | 86 |
| AS31863US | DACEN-2 - Centrilogic, Inc. | 49.7K | 65.5K | 54 |
| 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 |
| AS33339US | NEMONT-CELLULAR - Nemont | 49.9K | 65.5K | 124 |
| AS33353US | SBS - Sony Interactive Entertainment LLC | 49.9K | 230.2K | 142 |
| AS4226US | SUMOFIBER - Sumofiber | 49.9K | 262.1K | 44 |
| AS394380US | LEASEWEB-USA-DAL - Leaseweb USA, Inc. | 50.2K | 65.5K | 57 |
| AS393337US | UOFHARTFORD - The University of Hartford | 50.2K | — | 7 |
| 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 |
| AS19201US | ETC - Eastex Telephone Cooperative, Inc. | 50.4K | 65.5K | 21 |
| AS11499US | WHOI-WOODSHOLE - Woods Hole Oceanographic Institution | 50.4K | — | 9 |
| AS11550US | SDL-20-AS - Smithville Digital, LLC | 50.7K | — | 13 |
| AS19504US | WTCC - WTC Communications, Inc. | 50.7K | — | 25 |
| AS15100US | BEVCOMM-AS1 - Bevcomm | 50.7K | — | 19 |
| AS27501US | ISPNET-AS - isp.net | 50.9K | — | 68 |
| AS4237US | CSC-IGN-FTW-AS4237 - DXC US Latin America Corporation | 50.9K | — | 12 |
| AS400220US | PEARLCOMMFIBER-01 - PearlComm | 51.2K | 65.5K | 79 |
| AS27506US | CROWNCASTLE-AS27506 - Crown Castle Fiber LLC | 51.2K | — | 17 |
| AS62468US | HKCLOUDX - VpsQuan L.L.C. | 51.2K | — | 82 |
| AS2635US | AUTOMATTIC - Automattic, Inc | 51.5K | 48 | 203 |
| AS18501US | JOESD-18501 - CyberCloud Professionals LLC | 51.5K | 131.1K | 123 |
| AS32181US | ASN-GIGENET - GigeNET | 51.5K | 197.4K | 45 |
| AS18474US | AENEAS - Aeneas Internet Services | 51.5K | 65.5K | 17 |
| AS401696US | COGNETCLOUD - cognetcloud INC | 51.7K | — | 47 |
| AS15011US | JAGUAR-1 - Jaguar Communications | 51.7K | — | 53 |
| AS30688US | FASTTRACK-NET-AS - FastTrack Communications Inc. | 52K | 66.6K | 55 |
| 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 |
| AS399007US | EASTMSCONNECT-01 - East Mississippi Connect, LLC | 52.2K | 65.5K | 51 |
| AS22125US | PFPC - PNC Bank N.A. | 52.5K | — | 44 |
| AS398535US | ESUHSD-ASN-1 - EAST SIDE UNION HIGH SCHOOL DIST | 52.5K | — | 5 |
| AS14371US | PBNET - Paul Bunyan Communications | 52.5K | 1M | 13 |
| AS4983US | INTEL-SC-AS - Intel Corporation | 52.7K | — | 109 |
| AS14374US | AGRI-VALLEY - Agri-Valley Services Corporation | 52.7K | 65.5K | 106 |
| AS10352US | WCTC - Solarus | 52.7K | 65.5K | 58 |
| AS25609US | DMC - Detroit Medical Center | 53K | — | 30 |
| AS54179US | VCOE - Ventura County Office of Education | 53K | — | 58 |
| AS33651US | CMCS - Comcast Cable Communications, LLC | 53K | 201 | 273 |