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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
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) | 227.5M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218M | 24,543 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,304 |
| 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.
32,174 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,884 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,999 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,345 |
| 256 |
| — |
| 1 |
| AS69US | UPENN-NETWORK-LAB - University of Pennsylvania | 256 | — | 1 |
| AS36311US | CCU-ATT-01 - Capital Credit Union | 256 | — | 1 |
| AS30494US | FACTSET - FactSet Research Systems, Inc. | 256 | — | 1 |
| AS15155US | SOUTHERN-FARM-BUREAU-LIFE-INSURANCE - Southern Farm Bureau Life Insurance Company | 256 | — | 1 |
| AS398168US | GIRMC-NET-01 - Grand Island Regional Medical Center | 256 | — | 1 |
| AS400362US | HYDRA-HOST - Hydra Host, Inc. | 256 | 1 | 2 |
| AS54550US | MSI7500 - M S International, Inc. | 256 | — | 1 |
| AS402428US | ITSUMIKU-AS-INTL1 - Itsumiku | 256 | — | 1 |
| AS399713US | KIRKLAND-ELLIS-DE - Kirkland & Ellis LLP | 256 | — | 1 |
| AS396057US | CUD-9305 - Credit Union of Denver | 256 | — | 1 |
| AS8021US | PCNET - Paradigm Communications Inc. | 256 | — | 1 |
| AS402092US | WEBSEC - WEBSEC | 256 | — | 1 |
| AS393547US | AS393547 - San Diego County Credit Union | 256 | — | 1 |
| AS32253US | BECPL - Buffalo & Erie County Public Library | 256 | — | 1 |
| AS63196US | APEX01 - APEX INDUSTRIAL TECHNOLOGIES LLC | 256 | — | 1 |
| AS1861US | DISN-PILOTNET7 - RTX BBN Technologies, Inc. | 256 | — | 1 |
| AS394110US | BNFP - Jaguar Land Rover Manhattan | 256 | 1 | 2 |
| AS402038US | DNS-ASN-1 - Distributed Network Solutions LLC | 256 | — | 1 |
| AS32146US | COB-MT - City of Bozeman | 256 | — | 1 |
| AS14208US | BUDCO-PSC - BUDCO | 256 | — | 1 |
| AS395536US | TRIMARKASSOC - Trimark Associates, inc | 256 | — | 1 |
| AS400344US | ETFH-PAL-01 - East Texas Broadband | 256 | — | 1 |
| AS397123US | WSB-TV - Cox Media Group, LLC | 256 | — | 1 |
| AS53529US | JCC-ASN - Jefferson County, Colorado | 256 | — | 1 |
| AS55262US | ANTHEMCONNECT-LA2 - Anthem Broadband | 256 | 65.5K | 2 |
| AS33376US | CASTLE-HARLAN - Castle Harlan | 256 | — | 1 |
| AS54943US | FNIS-INSURANCE-JACKSONVILLE - Stillwater Insurance Services, Inc | 256 | — | 1 |
| AS395018US | NPD-EURO - The NPD Group Inc. | 256 | — | 1 |
| AS393371US | MB1640-1 - Microbilt Corporation | 256 | — | 1 |
| AS402077US | MSE-01 - Monumental Sports & Entertainment | 256 | — | 1 |
| AS25879US | UPHSM-ASN-01 - UP Health System - Marquette | 256 | — | 1 |
| AS206100US | ccr_ripe Circle Computer Resources Inc | 256 | — | 1 |
| AS46884US | SERVICELINK-2 - ServiceLink Holdings, LLC | 256 | — | 1 |
| AS393782US | EJ - EJ Group Incorporated | 256 | — | 1 |
| AS21702US | HADDAD - The Haddad Organization Ltd. | 256 | — | 1 |
| AS397855US | ICSCLOUD-1 - Innovative Computer Solutions, Inc | 256 | — | 1 |
| AS397748US | CMFHQ-ASN-01 - Country Music Foundation | 256 | 1 | 2 |
| AS396295US | CALIBER-SOUTH - Caliber South, LLC | 256 | 65.5K | 2 |
| AS401282US | ORIC-REPUBLIC-01 - Old Republic International Corporation | 256 | — | 1 |
| AS397120US | CHEMUNGCONY - Chemung County, New York | 256 | — | 1 |
| AS40825US | PAML-ASN - Pinnacle Asset Management, LP | 256 | — | 1 |
| AS30050US | MARATHON-ASSET - Marathon Asset | 256 | — | 1 |
| AS54940US | BFS-49-54940 - Broadridge Financial Solutions, Inc. | 256 | — | 1 |
| AS25614US | TJM-ASNUMBER - TJM Institutional Services, LLC. | 256 | — | 1 |
| AS26915US | WERNER-OMA - Werner Enterprises | 256 | — | 1 |
| AS31887US | TRINITYHEALTH-MIDATLANTIC - Trinity Health Corporation | 256 | — | 1 |