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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 |
| AS63279US | XKEY - XKEY | 256 | 354 | 10 |
| AS393722US | SUMMT-ORTHO - Summit Ortho | 256 | — | 1 |
| AS63234US | IROBOT-2014 - iRobot Corporation | 256 | — | 1 |
| AS393683US | CURRYCOLLEGE - Curry College | 256 | — | 1 |
| AS21796US | WIT-ASN-01 - WITHAM HOSPITAL | 256 | — | 1 |
| AS32759US | UNITED-COMMUNITY-BANKS - United Community Bank | 256 | — | 1 |
| AS40872US | BERNARDS-NETWORK - Bernards | 256 | — | 1 |
| AS46919US | QRM - Quantitative Risk Management, Incorporated | 256 | — | 1 |
| AS46204US | MWE - McDermott, Will, and Emery | 256 | — | 1 |
| AS21805US | MRHAMEL - Ryan Hamel | 256 | 512 | 3 |
| AS399242US | CODINGFLYBOY-LLC - CodingFlyBoy LLC | 256 | 1 | 2 |
| AS21957US | KEATONAGLAIR-EHRE-ZWEI - Keaton Alexander Guger Lair | 256 | 4 | 5 |
| AS393838US | LPH-LIBERTYPUMPS - Liberty Pumps, Inc. | 256 | 1 | 2 |
| AS401219US | COCHISE-CONNECT - Cochise Connect LLC | 256 | 4.1K | 2 |
| AS29957US | STANFORD-UC - Stanford University | 256 | — | 1 |
| AS19861US | WCBE - Washington County Board of Education | 256 | — | 1 |
| AS26078US | JRTHOMPSON-NOC - J.R. Thompson Company | 256 | — | 1 |
| AS401728US | FCFCU - First Commonwealth Federal Credit Union | 256 | 1 | 2 |
| AS29865US | CONTREALTYCORP - Continental Realty Corporation | 256 | — | 1 |
| AS55279US | JOCKEY-INT - Jockey International, Inc. | 256 | — | 1 |
| AS14505US | ISLC - ISLC, Inc. | 256 | — | 1 |
| AS395726US | TRULITE - Trulite Glass & Aluminum Solutions, LLC | 256 | — | 1 |
| AS23386US | CRYE-LEIKE-REALTORS - Crye Leike Realtors | 256 | — | 1 |
| AS399233US | SUMOFIBER-FLORIDA - Sumofiber | 256 | — | 1 |
| AS15306US | WALSWORTH-FULTON - WALSWORTH PUBLISHING COMPANY | 256 | — | 1 |
| AS211729US | BAIYUEXIAO-AS Yiming Zhang | 256 | 74 | 15 |
| AS40491US | IQVIA-MORRISVILLE - IQVIA Holdings Inc | 256 | — | 1 |
| AS25750US | AS25750 - Southwestern Vermont Health Care Corporation | 256 | — | 1 |
| AS55240US | UNIFOCUS - UniFocus LP | 256 | — | 1 |
| AS401627US | POW-VA-GOV - County of Powhatan | 256 | — | 1 |
| AS14809US | MARTEK-WIRELESS - Martek Wireless LLC | 256 | — | 1 |
| AS46350US | SILBER00 - Silberline Mfg. Co. Inc. | 256 | — | 1 |
| AS395145US | MCDONOGH - McDonogh School, Inc. | 256 | — | 1 |
| AS53945US | PHL-INT - Hangley Aronchick Segal & Pudlin | 256 | — | 1 |
| AS398938US | EA-KIRKLAND - Electronic Arts, Inc. | 256 | — | 1 |
| AS400707US | MMH-01 - Melissa Memorial Hospital | 256 | — | 1 |
| AS395178US | RED-VENTURES - Red Ventures, LLC | 256 | — | 1 |
| AS402195US | MGH-MDF-01 - Marion General Hospital, Inc. | 256 | — | 1 |
| AS400948US | MCHD-6-01 - Midland County Hospital District | 256 | — | 1 |
| AS402600US | UN9 - UN9 | 256 | 1 | 2 |
| AS395782US | COHR-AS-FINISAR - Finisar Corp | 256 | — | 1 |
| AS32092US | AAI-BLI-AS - Altair Advanced Industries | 256 | — | 1 |
| AS29811US | SCHOLASTIC-INC - Scholastic Inc. | 256 | — | 1 |
| AS395806US | ONDECK-NYCOFFICE - Enova International, Inc. | 256 | — | 1 |
| AS399513US | MODA-PARTNERS-INC-01 - Moda Health | 256 | — | 1 |
| AS395770US | TEXARKANACOLLEGE - Texarkana College | 256 | 16 | 2 |