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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 | 24,555 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,303 |
| 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.
32,168 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 | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,995 |
| AS701US | UUNET - Verizon Business | 43.6M | 994 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,354 |
| 512 |
| — |
| 2 |
| AS26157US | LOSTCIPHER-CONSULTING - Lostcipher Consulting | 512 | 512 | 4 |
| AS53560US | ENDO - Endo Pharmaceuticals Inc | 512 | — | 2 |
| AS54364US | RR - Rosen Research LLC | 512 | 16 | 3 |
| AS46108US | VFLMIA2 - NTT Global Networks Incorporated | 512 | — | 2 |
| AS4563US | BTMU-AMERICA - MUFG Bank Ltd. | 512 | — | 2 |
| AS398878US | S4-PROD-INTERNET-WEST01 - Merchant-Link, LLC | 512 | — | 2 |
| AS21569US | DBU-AS - Dallas Baptist University | 512 | — | 2 |
| AS394528US | TRUWEST-CREDIT-UNION - Truwest Credit Union | 512 | — | 2 |
| AS400447US | APOG-WAYLAND - Apogee Telecom Inc. | 512 | — | 2 |
| AS393400US | LUXOTTICA-NA2 - Luxottica of America Inc. | 512 | — | 1 |
| AS46695US | REGENT-ASN1 - Regent University | 512 | — | 2 |
| AS399497US | TCBK-AS1 - Tri Counties Bank | 512 | — | 2 |
| AS63269US | BOOTBARN - Boot Barn Inc. | 512 | — | 2 |
| AS19694US | VHP-ASN - Vantage Health Plan, Inc. | 512 | 16 | 2 |
| AS29721US | CSHS-ELSEGUNDO - Cedars-Sinai Health Systems | 512 | — | 2 |
| AS19542US | PLICO - Protective Life Corporation | 512 | — | 2 |
| AS12051US | ESCONDIDO-CA - City of Escondido | 512 | — | 2 |
| AS22537US | ALBEMARLE-CORP - Albemarle Corp | 512 | — | 2 |
| AS21516US | ECH-2 - Ephrata Community Hospital | 512 | — | 2 |
| AS40889US | GREYSTONE - Greystone IT, Inc. | 512 | — | 2 |
| AS399426US | ASTSUL-ASN-01 - Applied Satellite Technology Systems US LLC | 512 | — | 1 |
| AS26714US | NORTHEAST-TEXAS-COMMUNITY-COLLEGE - Northeast Texas Community College | 512 | — | 2 |
| AS26699US | MUHLENBERG-COLLEGE - Muhlenberg College | 512 | — | 2 |
| AS393355US | SISA - SAMSUNG RESEARCH AMERICA, INC. | 512 | — | 2 |
| AS20188US | GMU1325 - Gwynedd Mercy College | 512 | — | 2 |
| AS399036US | XIGENT-SOLUTIONS - Xigent Solutions, LLC | 512 | — | 2 |
| AS53763US | LAKESIDE - Lakeside Network, LLC | 512 | 256 | 3 |
| AS397964US | HYVE-MANAGED-HOSTING - Hyve Managed Hosting Corp Inc | 512 | 2 | 2 |
| AS27295US | LISD - Lewisville Independent School District | 512 | — | 1 |
| AS398574US | COMMONWEALTH-CHARTER-ACADEMY - Commonwealth Charter Academy | 512 | — | 2 |
| AS396067US | CURRENT-NETWORKS-01 - Current Networks | 512 | 256 | 2 |
| AS1803US | COGENT-1803 - Cogent Communications, LLC | 512 | — | 2 |
| AS401998US | CIRRUS-EXT - Cirrus Guest Services | 512 | 4.4K | 4 |
| AS393534US | FHLBM-AS - Federal Home Loan Bank of Des Moines | 512 | — | 2 |
| AS53572US | HNB - Hookers and Blow | 512 | — | 2 |
| AS40618US | SESAME - Sesame Workshop | 512 | — | 2 |
| AS23406US | CHOATEHALLSTEWART - CHOATE, HALL & STEWART, LLP | 512 | — | 2 |
| AS62531US | PIH2 - PIH Health, Inc. | 512 | — | 1 |
| AS36003US | NOS-NOG - NOS Network Operations Group | 512 | 65.5K | 3 |
| AS397297US | AHL-DFW1-01 - AVENU HOLDINGS, LLC | 512 | — | 2 |
| AS20417US | STABILISERVERS - StabiliServers | 512 | 2 | 4 |
| AS54120US | MFF - MARC FISHER LLC | 512 | — | 2 |
| AS30385US | PERDUE-FARMS-INCORPORATED - Perdue Farms Incorporated | 512 | — | 2 |
| AS17109US | CALITECH - Calitech | 512 | — | 2 |
| AS47010US | LG-03279 - Liggett Group LLC | 512 | — | 2 |
| AS54683US | BSN-SPORTS - BSN Sports LLC | 512 | — | 2 |