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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 | 21,173 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,242 |
| 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 | 3,668 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,949 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,365 |
| 512 |
| — |
| 2 |
| AS54468US | CHMCA - Children's Hospital Medical Center of Akron | 512 | — | 2 |
| AS40666US | SABIC-INNOVATIVE-PLASTICS-US-LLC - SABIC INNOVATIVE PLASTICS US, LLC | 512 | — | 2 |
| AS31859US | ANGELINA-COUNTY - ANGELINA COUNTY | 512 | 1 | 2 |
| AS40907US | ATL-699-40907 - Access TeleCare, LLC | 512 | 2 | 4 |
| AS398476US | TORC-ROBOTICS - TORC Robotics, Inc. | 512 | — | 2 |
| AS394171US | ONPOINTCCU - OnPoint Community Credit Union | 512 | — | 2 |
| AS12051US | ESCONDIDO-CA - City of Escondido | 512 | — | 2 |
| AS396023US | DEMO-TEWKS - Demoulas Super Markets, Inc. | 512 | — | 2 |
| AS25806US | RALEYNET - Raley's | 512 | — | 2 |
| AS209177US | ArnoldPorter Arnold & Porter Kaye Scholer LLP | 512 | — | 1 |
| AS395454US | KUKUI-NET1 - Kukui | 512 | — | 1 |
| AS14927US | TERATEAMS-INC - TeraTeams Inc | 512 | — | 2 |
| AS22043US | STERIS - STERIS Corporation | 512 | — | 2 |
| AS54007US | WBT-ORL - Wycliffe Bible Translators, Inc | 512 | — | 2 |
| AS1383US | ANSBB-ASNNET-2 - Verizon Business | 512 | — | 1 |
| AS400125US | AUSTIN-ARENA-COMPANY - AUSTIN ARENA COMPANY, LLC | 512 | — | 2 |
| AS40124US | AS-CHARGED - QuickMeg Inc | 512 | — | 2 |
| AS401706US | VALLEY-SMART-HOMES - Valley Smart Homes | 512 | 4.1K | 3 |
| AS400697US | OPTIMAS-SOLUTIONS - Optimas OE Solutions, LLC | 512 | — | 2 |
| AS40457US | NASCAR-ASN - NASCAR Holdings, LLC | 512 | — | 2 |
| AS20188US | GMU1325 - Gwynedd Mercy College | 512 | — | 2 |
| AS54364US | RR - Rosen Research LLC | 512 | 16 | 3 |
| AS13313US | BARNES-AND-NOBLE - Barnes & Noble Inc. | 512 | — | 2 |
| AS16719US | NASD - Financial Industry Regulatory Authority, Inc. | 512 | — | 2 |
| AS207977US | GreenSpruceISP GreenSpruce Internet Services LLC | 512 | — | 1 |
| AS397133US | USG-NPE-WEST01 - ULTIMATE SOFTWARE GROUP | 512 | — | 2 |
| AS20286US | AMER-COLLEGE-OF-CARDIOLOGY-WASHINGTONDC - American College of Cardiology | 512 | — | 2 |
| AS11929US | MFAOIL - MFA Oil Company | 512 | — | 2 |
| AS11235US | ITRONHOSTINGAS - Itron-Hosting | 512 | — | 2 |
| AS399036US | XIGENT-SOLUTIONS - Xigent Solutions, LLC | 512 | — | 2 |
| AS401468US | WVW - WvW | 512 | 257 | 4 |
| AS18958US | SSI-AS-01 - THE SSI GROUP, LLC. | 512 | — | 2 |
| AS401727US | MEOWNET - Aurora Development LLC | 512 | 768 | 5 |
| AS15228US | OREILLYMEDIA-AS1 - O'Reilly Media, Inc. | 512 | — | 1 |
| AS13391US | UNOS - United Network for Organ Sharing | 512 | — | 2 |
| AS17124US | SOUTHARK - SouthArk | 512 | — | 2 |
| AS32481US | OSCEOLA - Osceola County | 512 | — | 2 |
| AS40207US | AS40207 - Cape Cod Healthcare Inc. | 512 | — | 2 |
| AS11211US | NCIC - NCIC Operator Services | 512 | — | 2 |
| AS395141US | PRMHQ-AS1 - Primisys Computer Systems & Support, LLC | 512 | 65.5K | 3 |
| AS7034US | PHIREPHLY-DESIGN - PhirePhly Design | 512 | 2 | 4 |
| AS26940US | LEVI-STRAUSS-CO - Levi Strauss & Co. | 512 | — | 2 |
| AS399524US | SOUNDLINE-01 - SoundLine Communications | 512 | — | 2 |
| AS36581US | WJCL-TV - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS402123US | UNMTA-AS-01 - UNMTA LLC | 512 | 256 | 3 |
| AS17038US | FLORI-62 - FTD | 512 | — | 2 |