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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 | 3,139 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,160 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,243 |
| 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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 383 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,669 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,948 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,372 |
| 256 |
| — |
| 1 |
| AS394438US | CITY-OF-PRINEVILLE - City of Prineville | 256 | — | 1 |
| AS18639US | ABTASSOCIATES-AS - Abt Associates, Inc. | 256 | — | 1 |
| AS13655US | AXXESS-NETWORKS - Axxess Networks LLC | 256 | — | 1 |
| AS399514US | HORIZONBANK - Horizon Bank | 256 | — | 1 |
| AS396165US | SAC - BLUE DIAMOND GROWERS | 256 | — | 1 |
| AS203436US | ScaleBit ScaleBit Technologies, L.L.C. | 256 | — | 1 |
| AS13423US | GALVESTONISD - GALVESTON ISD | 256 | — | 1 |
| AS54414US | RESPEC - Respec Inc | 256 | — | 1 |
| AS19121US | BLATTNER-HOLDING-COMPANY - Blattner Company | 256 | — | 1 |
| AS394935US | CHUCK-RESERVA - Chuck Reserva, Sole Proprietorship | 256 | 64 | 5 |
| AS397448US | DBSL-WQG-01 - DH Business Services LLC | 256 | — | 1 |
| AS21914US | RXO-CORPORATE-SOLUTIONS - RXO Corporate Solutions, LLC | 256 | — | 1 |
| AS18984US | MOBOWARE - Moboware Inc. | 256 | — | 1 |
| AS397859US | TNMINC-1 - TANIUM INC | 256 | — | 1 |
| AS30378US | MIRON-CONST-01 - Miron Construction Co., Inc. | 256 | — | 1 |
| AS399422US | UNIVERSAL-HOLDINGS - Universal Insurance Holdings, Inc. | 256 | — | 1 |
| AS36681US | TRITE-7 - Tritech Communications Inc. | 256 | — | 1 |
| AS209864US | NAIVE-NETWORK Zhaofeng Li | 256 | 7 | 8 |
| AS32650US | SANDHILLS-SW - SANDHILLS PUBLISHING | 256 | — | 1 |
| AS40215US | CONTRANCORP-DAL - Contran Corporation | 256 | — | 1 |
| AS4893US | RGM-ASN-1 - DRW Holdings, LLC | 256 | — | 1 |
| AS393369US | RTVISION-ASN1 - RtVision, Inc. | 256 | — | 1 |
| AS395182US | HEMPFIELDSD-PA - Hempfield School District | 256 | 256 | 2 |
| AS393899US | RWLV - RESORTS WORLD LAS VEGAS LLC | 256 | — | 1 |
| AS53500US | WIDOJ - Wisconsin Department of Justice | 256 | — | 1 |
| AS393795US | PTCT - PTC Therapeutics, Inc | 256 | — | 1 |
| AS400952US | KISSUSA-GA - KISS NAIL PRODUCTS, INC | 256 | — | 1 |
| AS62697US | TOK-NIDR - PIMCO | 256 | — | 1 |
| AS396257US | CHURCH-OF-THE-NAZARENE-INC - General Board of The Church of The Nazarene | 256 | — | 1 |
| AS20208US | 8DWEB-01 - 8DWeb LLC | 256 | — | 1 |
| AS398928US | THOMSON-REUTERS - Thomson Reuters U.S. LLC | 256 | — | 1 |
| AS14411US | MNCPPC-EIT - Maryland-National Capital Park and Planning Commission | 256 | — | 1 |
| AS399681US | SARNOVA-DC-ASN01 - SARNOVA, INC. | 256 | — | 1 |
| AS32305US | COOK-GROUP - COOK GROUP INC | 256 | — | 1 |
| AS46200US | ITC-146 - IT Curves | 256 | — | 1 |
| AS16969US | NEFEC-ASN01 - North East Florida Educational Consortium (Putnam County School District) | 256 | — | 1 |
| AS400771US | CODEHOF - Codehof LLC | 256 | 1 | 2 |
| AS11267US | PEIRCE-PHELPS - Peirce-Phelps, Inc. | 256 | — | 1 |
| AS31778US | CASCADE-MEDICAL-IMAGING - Cascade Medical Imaging | 256 | — | 1 |
| AS393896US | ASHMHATT0001 - The Harrison Memorrial Hospital, Inc. | 256 | — | 1 |
| AS394313US | NERDNET-10 - Nerd LLC | 256 | — | 1 |
| AS46855US | WHYFLY - WhyFly | 256 | — | 1 |
| AS35889US | GOREX - University of Hawaii | 256 | 65.5K | 2 |
| AS393551US | LON-DC-01 - Exiger LLC | 256 | — | 1 |
| AS10544US | NETGAIN-TECHNOLOGIES - NetGain Technologies, Inc. | 256 | — | 1 |
| AS396272US | HOUSTON-TEXANS - Houston Texans | 256 | — | 1 |