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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 | 24,749 |
| 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.
32,226 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. | 44.8M | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.7M | 4,282 |
| 12.3K |
| 6 |
| 54 |
| AS29804US | VALU-NET - Valu-Net LLC. | 12.3K | 65.5K | 13 |
| AS204764US | AS_MWS_EUR Kyndryl, Inc. | 12.3K | — | 13 |
| AS10812US | UTPB-AS-10812 - University of Texas System | 12.3K | — | 2 |
| AS33728US | UNITEL-INC - Unitel Inc | 12.3K | 65.5K | 3 |
| AS19526US | B2R - Back 2 Roots, LLC | 12.3K | 65.5K | 4 |
| AS53741US | AS53741 - American Airlines Inc. | 12.3K | — | 17 |
| AS698US | ASN-UIUC-REGION-AS - University of Illinois | 12.3K | 1 | 3 |
| AS13694US | XECUNET - Xecunet, LLC. | 12.3K | 65.5K | 3 |
| AS16710US | PBS - Public Broadcasting Service | 12.3K | — | 17 |
| AS19005US | MOZGROUP-SMTP - J2 Global Ventures, LLC | 12.3K | — | 11 |
| AS55105US | NCC-ASN - NORTHWEST COMMUNICATIONS COOPERATIVE | 12.3K | 65.5K | 4 |
| AS19428US | PHILLIPS-66 - Phillips 66 Company | 12.3K | — | 17 |
| AS13351US | B-U-C - Barbourville Utility Commission | 12.3K | 65.5K | 22 |
| AS30170US | OPTICFUSION - Isomedia, Inc. | 12.3K | 70.7K | 17 |
| AS22739US | BYU-H - Brigham Young University Hawaii | 12.3K | — | 2 |
| AS16913US | LOYNO-EDU - Loyola University New Orleans | 12.3K | — | 3 |
| AS3912US | CHECS - CHECS | 12.5K | 65.5K | 17 |
| AS46276US | SMARTERBROADBAND - SmarterBroadband | 12.5K | 65.5K | 8 |
| AS22136US | NYCT - New York Connect | 12.5K | 65.5K | 4 |
| AS6368US | NETNITCO-ASN - Northwestern Indiana Telephone Co. | 12.5K | 65.5K | 4 |
| AS13315US | HBSNET - Harvard Business School | 12.5K | — | 3 |
| AS26675US | REGIONIVESC - Region IV Education Service Center | 12.5K | — | 49 |
| AS14589US | DIGITALWEST-AS - Wave Broadband | 12.5K | 65.5K | 4 |
| AS54058US | RAKUTEN - Rakuten Inc | 12.5K | 1.1M | 18 |
| AS21915US | MCOEORG95340 - Merced County Office of Education | 12.5K | 2 | 10 |
| AS16633US | I-3 - N-able Technologies, Inc. | 12.5K | 3 | 47 |
| AS47049US | CERMAK-COLO-PUBLIC - HNI Corporation | 12.5K | — | 12 |
| AS395201US | ALLNODES - Allnodes Inc | 12.5K | — | 28 |
| AS25746US | UNISYSASN25746 - Unisys Corporation | 12.5K | — | 3 |
| AS10886US | MAX-GIGAPOP - University of Maryland | 12.5K | 386 | 13 |
| AS46328US | FOUR-U-AS - Four-U Technologies, LLC | 12.5K | — | 27 |
| AS26076US | INFINITECOM - Block Line Systems, LLC | 12.5K | 65.5K | 19 |
| AS31882US | ABS-AS1 - ABS Backup Solutions, Inc. | 12.5K | — | 18 |
| AS396052US | NEAC - North Alabama Electric Cooperative | 12.5K | — | 6 |
| AS30119US | PLUMAS-SIERRA-TELECOMMUNICATIONS - Plumas Sierra Telecommunications | 12.5K | 4.1K | 17 |
| AS14212US | SANTA-CRUZ-EDNET - Santa Cruz County Office of Education | 12.5K | 1 | 4 |
| AS398712US | ISPCONNECTED - ISPCONNECTED CORP | 12.5K | 131.1K | 15 |
| AS36100US | MTC-BROADBAND - MTC Broadband, Inc. | 12.5K | — | 23 |
| AS394434US | TWILIO - Twilio Inc | 12.5K | — | 42 |
| AS5773US | BCN-TELECOM-ASN2 - BCN Telecom Inc. | 12.5K | — | 49 |
| AS60US | AINET-AS60-PDFFILE - American Information Network | 12.5K | 65.5K | 7 |
| AS11283US | COSTCO - Costco, Inc. | 12.5K | — | 46 |
| AS393731US | FVDC - Fusion Voice and Data Corp. | 12.8K | — | 15 |
| AS40715US | COLOGIX-COL - Cologix, Inc | 12.8K | 65.5K | 11 |
| AS19790US | ASPIRE-FIBER - Aspire Broadband, LLC | 12.8K | 4.1K | 7 |
| AS10676US | GLOBALEC - IBM | 12.8K | — | 4 |