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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) | 227.5M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218.2M | 25,766 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,308 |
| 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.
32,243 autonomous systems registered to United States. Click an AS for detail.
| 73M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,898 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,998 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,359 |
| 512 |
| — |
| 2 |
| AS12120US | AAO-AIO - Amphenol Corp | 512 | — | 2 |
| AS398015US | MICRO4ASN - MicroFour, Inc. | 512 | — | 2 |
| AS394764US | CONFLUENCE-HEALTH - Confluence Health | 512 | — | 2 |
| AS400159US | WAYFAIR-CAMPUS - Wayfair LLC | 512 | — | 1 |
| AS22392US | NGS-MOE - National Geographic Society | 512 | — | 2 |
| AS32306US | FALCK-MOBILE-HEALTH-CORP - Falck USA, Inc. | 512 | — | 2 |
| AS26036US | KOOTENAIHEALTH - Kootenai Medical Center | 512 | — | 2 |
| AS55249US | SAGE-ELSEG1 - Sage Publications, Inc. | 512 | — | 1 |
| AS396997US | AS-BLOCKSTREAM - Blockstream USA Corporation | 512 | 3 | 5 |
| AS21698US | TURBONET-NETWORK - TurboNet | 512 | — | 2 |
| AS397691US | CGMUS - CompuGroup Medical Inc. | 512 | — | 2 |
| AS398852US | NEXTOR-TELECOM - Nextor Telecom LLC | 512 | 65.5K | 3 |
| AS393296US | AUGUSTANACOLLEGEROCKISLANDIL - Augustana College | 512 | — | 1 |
| AS32830US | CCS-325-1 - Connecticut Computer Service, Inc. | 512 | — | 2 |
| AS62996US | OMR-01 - Unwin Company | 512 | — | 1 |
| AS40711US | INTERACTIVE-CHIC - Interactive Brokers LLC | 512 | — | 2 |
| AS23434US | SURS - State Universities Retirement System | 512 | — | 2 |
| AS400781US | XTC-NA-ASN-01 - XenTegra Connect | 512 | — | 2 |
| AS15285US | SRLCD - Cash Depot | 512 | — | 2 |
| AS11894US | SERVICE-CREDIT-UNION-11894 - Service Credit Union | 512 | — | 1 |
| AS53710US | OWENS-CORNING - Owens-Corning | 512 | 8 | 2 |
| AS619US | DNIC-ASBLK-00616-00665 - United States Department of Defense (DoD) | 512 | — | 2 |
| AS394981US | CONTINENTAL-RESOURCES-INC-2 - Continental Resources, Inc. | 512 | — | 2 |
| AS53784US | SNHHS - Southern New Hampshire Health System | 512 | — | 2 |
| AS55157US | COLLIERS - Colliers International | 512 | — | 2 |
| AS11962US | EMPIRE5882300 - Empire Today LLC | 512 | — | 2 |
| AS33208US | EPIC-HOSTING-3 - Epic Hosting, LLC | 512 | — | 2 |
| AS40205US | PRISMA-ASN-1 - PRISMA HOLDINGS, LLC | 512 | 3 | 5 |
| AS13978US | WHBE-OLYMPIA - Washington Health Benefit Exchange | 512 | — | 2 |
| AS25735US | SLOTH-NET - Sloth Networks | 512 | 256 | 3 |
| AS36763US | WBBH - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS11361US | BOSCOVS - Boscov's Department Store, LLC | 512 | — | 2 |
| AS53284US | SR-TELECOM - Standing Rock Telecom | 512 | — | 2 |
| AS22621US | UNIGROUP - UniGroup, INC | 512 | — | 2 |
| AS62841US | CITY-OF-NEW-ORLEANS - City of New Orleans | 512 | — | 1 |
| AS18518US | ARES-MGMT - Ares Management LLC | 512 | — | 2 |
| AS400141US | PATTERSONVILLE-TELCO-OHIO - Pattersonville Telephone Co | 512 | — | 1 |
| AS400007US | OWNADTECH - OwnAdtech INC | 512 | — | 2 |
| AS398322US | ESFCU-01 - Educational Systems Federal Credit Union | 512 | — | 2 |
| AS400659US | DAVEYGROUPLLC-ASN - Davey Group LLC | 512 | 1 | 3 |
| AS30255US | NYGC - New York Genome Center, Inc. | 512 | — | 2 |
| AS402806US | DUOCIRCLE - DuoCircle | 512 | — | 2 |
| AS393448US | LIBERALLY-SINGAPORE - Liberally Network, LLC | 512 | 3 | 5 |
| AS397170US | COMPASS-FOUNDATION - COMPASS FOUNDATION LLC | 512 | 768 | 5 |
| AS393939US | RUFFALO-NOEL-LEVITZ - RUFFALO NOEL LEVITZ LLC | 512 | — | 2 |
| AS10858US | HYPER-BNG-ASN - Hypertherm Inc. | 512 | — | 2 |