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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 |
| 12.8K |
| 65.5K |
| 11 |
| AS393731US | FVDC - Fusion Voice and Data Corp. | 12.8K | — | 15 |
| AS19695US | DYFEND NETWORK - Dyfend LLC | 12.8K | — | 44 |
| AS40715US | COLOGIX-COL - Cologix, Inc | 12.8K | 65.5K | 11 |
| AS40009US | BITGRAVITY - BitGravity, Inc. | 12.8K | 27 | 70 |
| AS19746US | MMU-FIBER - Marshall Municipal Utilities | 12.8K | — | 25 |
| AS2615US | BECHTEL - Bechtel Corporation | 12.8K | — | 45 |
| AS16633US | I-3 - N-able Technologies, Inc. | 12.8K | 3 | 48 |
| AS46437US | FOURWAY - Fourway Computer Products, Inc. | 12.8K | 1M | 13 |
| AS25612US | DSL-EXPRESS - DSL EXPRESS | 12.8K | — | 4 |
| AS27572US | THEBOE-27572 - The Boeing Company | 12.8K | — | 19 |
| AS10538US | FWB-ALASKA-1 - TelAlaska | 12.8K | — | 4 |
| AS30200US | DERBY - DerbyTech Computer Works | 12.8K | — | 20 |
| AS27021US | AS-DGX - Quest Diagnostics, Inc. | 12.8K | — | 17 |
| AS5671US | PBI-NET-BLK - AT&T Enterprises, LLC | 12.5K | — | 3 |
| AS47049US | CERMAK-COLO-PUBLIC - HNI Corporation | 12.5K | — | 12 |
| AS3912US | CHECS - CHECS | 12.5K | 65.5K | 17 |
| AS11054US | LIVEPERSON - LivePerson, Inc. | 12.5K | 40 | 69 |
| AS11357US | INFO-IQTINC - InfoQuest Technologies, Inc. | 12.5K | — | 7 |
| AS400941US | NUBINITY - Nubinity, LLC | 12.5K | 3 | 14 |
| AS215728US | CloudWebManage Kamatera Inc | 12.5K | — | 49 |
| AS21915US | MCOEORG95340 - Merced County Office of Education | 12.5K | 2 | 10 |
| AS396052US | NEAC - North Alabama Electric Cooperative | 12.5K | — | 6 |
| AS5773US | BCN-TELECOM-ASN2 - BCN Telecom Inc. | 12.5K | — | 49 |
| AS33480US | WEBWERKSAS1 - Web Werks | 12.5K | 265 | 59 |
| AS22136US | NYCT - New York Connect | 12.5K | 65.5K | 4 |
| AS25746US | UNISYSASN25746 - Unisys Corporation | 12.5K | — | 3 |
| AS398712US | ISPCONNECTED - ISPCONNECTED CORP | 12.5K | 131.1K | 15 |
| AS203156US | Relayify-LLC Relayify LLC | 12.5K | 524.3K | 50 |
| AS46276US | SMARTERBROADBAND - SmarterBroadband | 12.5K | 65.5K | 8 |
| AS14212US | SANTA-CRUZ-EDNET - Santa Cruz County Office of Education | 12.5K | 1 | 4 |
| AS11283US | COSTCO - Costco, Inc. | 12.5K | — | 46 |
| AS13315US | HBSNET - Harvard Business School | 12.5K | — | 3 |
| AS26675US | REGIONIVESC - Region IV Education Service Center | 12.5K | — | 49 |
| AS26076US | INFINITECOM - Block Line Systems, LLC | 12.5K | 65.5K | 19 |
| AS61138US | ZAPPIE-HOST-AS Zappie Host LLC | 12.5K | 200.8K | 130 |
| AS6368US | NETNITCO-ASN - Northwestern Indiana Telephone Co. | 12.5K | 65.5K | 4 |
| AS31882US | ABS-AS1 - ABS Backup Solutions, Inc. | 12.5K | — | 18 |
| AS30119US | PLUMAS-SIERRA-TELECOMMUNICATIONS - Plumas Sierra Telecommunications | 12.5K | 4.1K | 17 |
| AS395201US | ALLNODES - Allnodes Inc | 12.5K | — | 28 |
| AS212336US | BYTEVIRTLLC ByteVirt LLC | 12.5K | 19 | 58 |
| AS10886US | MAX-GIGAPOP - University of Maryland | 12.5K | 386 | 13 |
| AS402447US | STREAMWAYS-CORE-ASN - Streamways | 12.5K | — | 36 |
| AS394907US | NORTHLANDCOMMUNICATIONS-NC-398 - Northland Communications Inc. | 12.5K | 65.5K | 11 |
| AS33322US | NDCHOST - Network Data Center Host, Inc. | 12.3K | — | 7 |
| AS53809US | TTUHSC-ELP - Texas Tech University Health Sciences Center at El Paso | 12.3K | 16 | 3 |
| AS19570US | MAPLETRONICSCOMP - Maple Tronics Computers, Inc. | 12.3K | — | 26 |