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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. | 218.1M | 24,635 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,306 |
| 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.
32,220 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 233 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,003 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,360 |
| 256 |
| — |
| 1 |
| AS63273US | AMERISAFE-AS - Amerisafe Inc. | 256 | — | 1 |
| AS395273US | CBAD-EHCS - Altafiber | 256 | — | 1 |
| AS393606US | TECHNEXUS - TechNexus LLC | 256 | — | 1 |
| AS204807US | Lite-Info-ISP Lite Info LLC | 256 | — | 1 |
| AS36174US | BAPTISTHEALTH - Baptist Health System | 256 | — | 1 |
| AS55234US | PLEXUSSYSTEMS-US2 - ROCKWELL AUTOMATION Inc. | 256 | — | 1 |
| AS53463US | AGC-01 - American Greetings | 256 | — | 1 |
| AS401442US | SPUR - Spur Intelligence Corporation | 256 | 2 | 3 |
| AS13314US | TEMA-AS - Toyota Motor Engineering and Manufacturing North America, Inc. | 256 | — | 1 |
| AS5067US | AC-5394-5067 - AvalonBay Communities, Inc. | 256 | — | 1 |
| AS400957US | ONERINGNETWORKS - Melissa's Produce | 256 | — | 1 |
| AS30395US | SAHS - SWEDISHAMERICAN HEALTH SYSTEM CORPORATION | 256 | — | 1 |
| AS14785US | BCBSVT-DOT8-ASN - BCBSVT | 256 | — | 1 |
| AS16470US | WINGNET-AS1 - WingNET Internet Services | 256 | — | 1 |
| AS63169US | BMA - BMA MANAGEMENT SUPPORT CORPORATION | 256 | — | 1 |
| AS1098US | SNAPONE-LEHI-01 - Snap One, LLC. | 256 | — | 1 |
| AS394288US | COHES-ASN-01 - Cohesity, Inc. | 256 | — | 1 |
| AS14466US | ARIBA-PGH - SAP America Inc. | 256 | — | 1 |
| AS1646US | ABF - American Solutions for Business | 256 | — | 1 |
| AS46326US | PANAGORA470 - PANAGORA ASSET MANAGEMENT | 256 | — | 1 |
| AS26935US | WHOLESAIL-NOEL-ASN - Wholesail networks LLC | 256 | 65.5K | 2 |
| AS397640US | AS-CORESCI - Core Scientific, Inc. | 256 | — | 1 |
| AS17217US | INDYIX-SERVICES - Indianapolis Internet Exchange, Inc. | 256 | 16 | 2 |
| AS396250US | CATAWBA-ASN - 550 Montgomery Investments, LLC | 256 | 65.5K | 2 |
| AS393820US | 22ND-DAA - 22nd District Agricultural Association | 256 | — | 1 |
| AS401930US | JFK NTO - New Terminal One | 256 | — | 1 |
| AS393287US | ASN-LEASETEAM - LTi Technology Solutions, Inc. | 256 | — | 1 |
| AS402130US | HOMEMAKERS UPSTATE GROUP - Homemakers Upstate Group, Inc. | 256 | — | 1 |
| AS14847US | PECKSERVERS-LLC-IP-ROUTING - Peck Servers, LLC | 256 | 256 | 2 |
| AS400638US | BSOFTTECH-NET - Bsoft Technology & Computer Services LLC | 256 | — | 1 |
| AS395854US | SIMNA-64643 - Schroder Investment Management North America Inc. | 256 | — | 1 |
| AS394532US | INAZMA - TECPRESSO INC. | 256 | — | 1 |
| AS13362US | GENERAL-RESEARCH - General Research Laboratories, LLC | 256 | 4 | 5 |
| AS402094US | SRJK-DFW-01 - SRJK LLC | 256 | 256 | 2 |
| AS397777US | TORANI-AS - Torani | 256 | — | 1 |
| AS29790US | NEW-LIBERTY-HOSPITAL - New Liberty Hospital District of Clay County, Missouri | 256 | — | 1 |
| AS398426US | APOG-RIPON - Apogee Telecom Inc. | 256 | — | 1 |
| AS36260US | MISAKA-BIZNET-AS - Misaka Network, Inc. | 256 | — | 1 |
| AS16881US | DAVID-C-PRALL-INTERNET - Prall, Inc., David C | 256 | 1 | 2 |
| AS20391US | PRGPARKING-DOMAIN - The Parking Spot | 256 | — | 1 |
| AS30618US | LEEUNIV - Lee University | 256 | — | 1 |
| AS396452US | LOUDOUN-WATER - Loudoun Water | 256 | — | 1 |
| AS397619US | CURTIS - Curtis, Mallet-Prevost, Colt & Mosle, LLP | 256 | — | 1 |
| AS400903US | IND-COLO-01 - Genesys Cloud | 256 | 1 | 2 |
| AS402115US | TSC-AS - Tallahassee State College | 256 | — | 1 |
| AS206885US | TECH9COMPUTERS Tech9 Computer Solutions | 256 | 4 | 5 |