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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 | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,661 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,361 |
| 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.
32,363 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 | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,490 |
| 1K |
| — |
| 4 |
| AS16610US | BLUEBIRD-WIRELESS - Bluebird Wireless Broadband Services, L.L.C. | 1K | — | 4 |
| AS29832US | METTLER-TOLEDO-AM-NOC-ASN - Mettler-Toledo LLC | 1K | — | 1 |
| AS397125US | BLOOSURF-ASN-01 - BLOOSURF LLC | 1K | — | 1 |
| AS40553US | CUYAHOGA-COUNTY - Cuyahoga County Information Services center | 1K | — | 2 |
| AS39979US | POLYGON-IO-NY5 - Polygon.io, Inc | 1K | — | 4 |
| AS22448US | MICRO-SPEC - Microcomputer Specialists, Inc. | 1K | — | 1 |
| AS40857US | PAECOM - IT-CNP, Inc. | 1K | 65.5K | 5 |
| AS26399US | BROADMOOR - Broadmoor Hotel Inc | 1K | — | 4 |
| AS32446US | HARBOR-CAPITAL-ADVISORS - Harbor Capital Advisors, Inc. | 1K | — | 3 |
| AS395526US | REGALBELOIT-WAUSAU - Regal Rexnord Corporation | 1K | — | 4 |
| AS399269US | TORRANCE-01 - City of Torrance | 1K | — | 4 |
| AS398450US | CUSTOMCABLE-FISHERISLAND-2020 - Custom Cable LLLP | 1K | — | 1 |
| AS36486US | AMTOTE-AS - AMTOTE INTERNATIONAL, INC. | 1K | — | 1 |
| AS14210US | EDGECAST - Edgecast Inc. | 1K | 5 | 9 |
| AS13597US | CMSI - Creative Mobile Solutions, Inc. | 1K | — | 3 |
| AS229US | MERIT-AS-6 - Merit Network Inc. | 1K | 1 | 3 |
| AS397613US | NTS - Network Technology Solutions, LLC | 1K | — | 2 |
| AS401335US | AI-DUDE-RI - Minerdude LLC | 1K | — | 2 |
| AS26795US | AS-AEN - Arizona Education Network Services Corporation | 1K | 4.1K | 2 |
| AS47100US | WITOPIA-AS1 - WiTopia, Inc. | 1K | — | 1 |
| AS17146US | MGBAS01 - MGB Systems, Inc. | 1K | — | 4 |
| AS401814US | WPP-ET-CAMPUS-SAOPAULO - The Ogilvy Group, LLC | 1K | — | 3 |
| AS400138US | DATABENTO - Databento, Inc. | 1K | — | 4 |
| AS29841US | JACKSON - JACKSON NATIONAL LIFE INSURANCE CO. | 1K | — | 4 |
| AS11787US | PACOURTS-AS - Supreme Court of Pennsylvania | 1K | — | 4 |
| AS396354US | SPECTRUMVOIP-ISP-DAL - SpectrumVoIP Inc | 1K | 65.5K | 4 |
| AS399251US | KBSI-ASN - Koch Industries, Inc. | 1K | — | 3 |
| AS395193US | WESTFIELD-INSURANCE - Ohio Farmer's Insurance Company | 1K | — | 3 |
| AS33131US | INTRALINKS - INTRALINKS INC. | 1K | — | 4 |
| AS20177US | EMPORIA-STATE-UNIVERSITY - Emporia State University | 1K | — | 2 |
| AS393496US | OMNIHOTELS - OMNI HOTELS MANAGEMENT CORPORATION | 1K | — | 4 |
| AS54180US | SMVLMS - SMITHVILLE TELEPHONE CO | 1K | — | 1 |
| AS398340US | ANET-LAB - IDC | 1K | 256 | 5 |
| AS29207US | SHIRE-UK-AS Takeda Pharmaceuticals U.S.A., Inc. | 1K | — | 4 |
| AS26670US | MCISD-AS - Mission CISD | 1K | — | 1 |
| AS33539US | ISP-MANAGEMENT - ISP Management, Inc. | 1K | — | 4 |
| AS22466US | WALLOWA-VALLEY-NETWORKS-LLC - Wallowa Valley Networks, LLC | 1K | — | 1 |
| AS19060US | BRYANLGH-AS-01 - Bryan Health | 1K | — | 2 |
| AS22487US | VALENCIA - Valencia College | 1K | — | 4 |
| AS13612US | SYSMEX - Sysmex | 1K | — | 1 |
| AS27441US | SSN-US - ITRON INC. | 1K | — | 2 |
| AS18783US | RDSEC-NET-01 - RD Sec LLC | 1K | 4.1K | 4 |
| AS14362US | VAISALA1 - Vaisala Inc | 1K | — | 4 |
| AS14645US | AS-CJIS-20 - CJIS-Consortium-20th-Court Administration | 1K | — | 1 |
| AS36367US | AGN-TECH - Alchemy Global Networks, LLC | 1K | 3 | 7 |
| AS26566US | AS-SJC44NET - Pal Communications LLC | 1K | — | 1 |