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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. | 218M | 23,924 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,299 |
| 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.
32,140 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 230 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,881 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,992 |
| AS701US | UUNET - Verizon Business | 43.6M | 995 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,310 |
| — |
| — |
| 0 |
| AS521US | FORD-SRL-AS - Ford Motor Company | — | — | 0 |
| AS504US | AFCONC-BLOCK1-AS - Air Force Systems Networking | — | — | 0 |
| AS3951US | INS-AZURE-EXTRANET-VHUBS - CenturyLink Communications, LLC | — | — | 0 |
| AS26455US | BMS-AS - Bristol-Myers Squibb Company | — | — | 0 |
| AS4076US | DNIC-ASBLK-04065-04125 - Headquarters, USAISC | — | — | 0 |
| AS3893US | DNIC-ASBLK-03859-03897 - Headquarters, USAISC | — | — | 0 |
| AS22658US | MASSIVE-NETWORKS-22658 - Massive Networks, Inc. | — | — | 0 |
| AS4337US | DNIC-ASBLK-04328-04351 - Headquarters, USAISC | — | — | 0 |
| AS4169US | ECHNET - Egleston Children's Hospital | — | — | 0 |
| AS4127US | DUPONT-SCD - DuPont Scientific Computing | — | — | 0 |
| AS2932US | NEDI-GIS - News Electronic Data, Inc. | — | — | 0 |
| AS33220US | OB-AS-EU - Bloomberg Financial Markets Limited Partnership | — | — | 0 |
| AS36839US | PHX-PERFECTO - Perfecto Mobile Inc | — | — | 0 |
| AS32676US | AS-TIERP-32676 - TierPoint, LLC | — | — | 0 |
| AS32462US | TMARZETTI - T. Marzetti Company | — | — | 0 |
| AS31970US | LIVESTREAM-USA-1 - Livestream LLC | — | — | 0 |
| AS32054US | BAYRIA - Bayria.com | — | — | 0 |
| AS33332US | CHARTER-33332-NA - Charter Communications LLC | — | — | 0 |
| AS33747US | CHARTER-33747-NA - Charter Communications LLC | — | — | 0 |
| AS16953US | DELUXE-MEDIA-INC - Deluxe Media | — | — | 0 |
| AS32254US | KYNEX-AS1 - Kynex Inc. | — | — | 0 |
| AS32948US | LLS-HO-AS - LEUKEMIA & LYMPHOMA SOCIETY | — | — | 0 |
| AS15308US | B-A-C-S - Verizon Business | — | — | 0 |
| AS15186US | FUTUREGRID - Indiana University | — | — | 0 |
| AS16396US | PIGGLY-WIGGLY-CAROLINA - Piggly Wiggly Carolina Company | — | — | 0 |
| AS15016US | RBSLYNK-AS2 - Fidelity National Information Services, Inc. | — | — | 0 |
| AS15014US | TTS-ASN - Total Tool Supply, Inc. | — | — | 0 |
| AS16804US | ARCDIGITALNET - Arcdigital LLC | — | — | 0 |
| AS17231US | ATT-CERFNET-BLOCK - AT&T Enterprises, LLC | — | — | 0 |
| AS33406US | GLYNN-COUNTY-SCHOOLS - GLYNN COUNTY SCHOOLS | — | — | 0 |
| AS27030US | USCG-AS - United States Coast Guard | — | — | 0 |
| AS26460US | AS26460 - Fidelity National Information Services, Inc. | — | — | 0 |
| AS25954US | CCG-INET - County Commissioners for Calvert County, Maryland | — | — | 0 |
| AS25781US | FCASD - Fox Chapel Area School District | — | — | 0 |
| AS27070US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | — | — | 0 |
| AS27100US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | — | — | 0 |
| AS31838US | OPNET - OPNET Technologies | — | — | 0 |
| AS27007US | ADPSLC - Automatic Data Processing, Inc. | — | — | 0 |
| AS32529US | CGI-FEDERAL-ASN-1 - CGI Federal | — | — | 0 |
| AS36756US | CATO-INSTITUTE - Cato Institute | — | — | 0 |
| AS36802US | WCT-AUS2 - EvolveIP, LLC | — | — | 0 |
| AS36167US | NETRIPLEX01 - NETRIPLEX LLC | — | — | 0 |
| AS40400US | EDC-MIDDLETOWN - Middletown Data Center | — | — | 0 |
| AS40217US | DACSNX-ISP - DACS-NX | — | — | 0 |
| AS40348US | NUVIO-CORPORATION - NVO Holdings, Inc. | — | — | 0 |
| AS40301US | SFCU-ASN - Southeast Financial Credit Union | — | — | 0 |