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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) | 227.7M | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,681 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,370 |
| 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.
32,364 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 236 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,914 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,047 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,503 |
| 256 |
| — |
| 1 |
| AS54550US | MSI7500 - M S International, Inc. | 256 | — | 1 |
| AS395271US | TBOSA-SAT-HQ - The Bank of San Antonio | 256 | — | 1 |
| AS198109US | HCA-AS Horizon Capital Advisors, LLC | 256 | — | 1 |
| AS17236US | TULSAL-74103 - Tulsa City-County Library | 256 | — | 1 |
| AS30056US | VUBIQUITY - Avail Media | 256 | — | 1 |
| AS397837US | GEICO-CNAB - GEICO | 256 | — | 1 |
| AS396036US | CPI-ASN - CPI | 256 | — | 1 |
| AS55086US | PINNACLE-DATA-SYSTEMS - Pinnacle Data Systems, L.L.C. | 256 | — | 1 |
| AS397980US | NACSPACE - NacSpace LLC | 256 | — | 1 |
| AS399722US | AS-MS-78065 - Blue Cross Blue Shield of Illinois or Blue Cross Blue Shield of Texas | 256 | — | 1 |
| AS397995US | CITYOFEDMOND - City of Edmond | 256 | — | 1 |
| AS63461US | DFA-INTERNET - Dean Foods Company | 256 | — | 1 |
| AS21791US | HUNTSVILLE-MEMORIAL-HOSPITAL - HUNTSVILLE MEMORIAL HOSPITAL | 256 | — | 1 |
| AS23161US | PHOTOSHELTER-LON - PhotoShelter, Inc. | 256 | 1 | 2 |
| AS40771US | IML - Illinois Mutual Life Insurance Company | 256 | — | 1 |
| AS40774US | BSM-9-ASN - Bay State Milling Company | 256 | — | 1 |
| AS18436US | MSPD-ASN - Mohegan Sun Pocono Downs | 256 | — | 1 |
| AS397120US | CHEMUNGCONY - Chemung County, New York | 256 | — | 1 |
| AS393901US | TYLERTECH-NIC3 - Tyler Technologies, Inc. | 256 | — | 1 |
| AS21761US | CLUBCAR-01 - Club Car, LLC | 256 | — | 1 |
| AS396459US | VENANGO-WAN - County of Venango | 256 | — | 1 |
| AS396090US | SEMINOLECOUNTY - Seminole County Government | 256 | — | 1 |
| AS11874US | COLUMBUSREGIONALHOSPIAL - Columbus Regional Hospital | 256 | — | 1 |
| AS30562US | SCARSDALE-SCHOOLS - Scarsdale Schools District | 256 | — | 1 |
| AS31887US | TRINITYHEALTH-MIDATLANTIC - Trinity Health Corporation | 256 | — | 1 |
| AS20008US | IDEMIA-IPS - Idemia Identity & Security USA, LLC | 256 | — | 1 |
| AS11219US | GLIDEWELL - James R. Glidewell Dental Ceramics Inc. | 256 | — | 1 |
| AS402238US | VTT - Van Oss Telegraph and Telephone LLC | 256 | 256 | 2 |
| AS62720US | IRONTONTELEPHONECO - Ironton Telephone Company | 256 | — | 1 |
| AS400020US | GRANTEP-ASN - Grant Supplies | 256 | — | 1 |
| AS400642US | NX-EDGE-NETWORK-LLC - NX Edge Network LLC | 256 | 1 | 2 |
| AS33599US | RELIABLE-REPORTS-OF-TEXAS-INC - Reliable Reports of Texas, Inc. | 256 | — | 1 |
| AS215520US | JOSH-BOYD JOSHUA BOYD | 256 | 1 | 2 |
| AS395229US | TEMPLE-COLLEGE-TX - Temple College | 256 | — | 1 |
| AS14681US | JAYCO - Jayco, Inc | 256 | — | 1 |
| AS32146US | COB-MT - City of Bozeman | 256 | — | 1 |
| AS29785US | DACSIX-CENTRAL - DACS-IX | 256 | 65 | 6 |
| AS32691US | CSC - Corporation Service Company | 256 | — | 1 |
| AS398117US | WILSON-COLLEGE - Wilson College | 256 | — | 1 |
| AS1096US | IZUMA-PROD-1 - Izuma Networks Inc. | 256 | — | 1 |
| AS401791US | FDR-068 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS395604US | COCORTEZ-2016 - City of Cortez | 256 | — | 1 |
| AS63006US | TRUHEARINGWJ - TruHearing, Inc | 256 | — | 1 |
| AS400151US | SPARC-BROOKS-BROTHERS - BB OPCO LLC | 256 | — | 1 |
| AS401267US | VERIRA - VERIRA LLC | 256 | — | 1 |
| AS19817US | MIU-IA - Maharishi International University | 256 | — | 1 |