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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 |
| 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 |
| AS32416US | WHARTON-COUNTY-JUNIOR-COLLEGE - Wharton County Junior College | 256 | — | 1 |
| AS397694US | SMG - SMG Security Holdings LLC | 256 | — | 1 |
| AS13957US | MNAA - Metropolitan Nashville Airport Authority | 256 | — | 1 |
| AS64202US | CHELSIO - Chelsio Communications, Inc. | 256 | — | 1 |
| AS398319US | ANMISA-LLC - Aaron N Martin ISA LLC | 256 | 256 | 2 |
| AS1217US | ORACLE-PACRIM-AS - Oracle Corporation | 256 | — | 1 |
| AS394103US | AS-PINN - Pinnacle Associates, LTD | 256 | — | 1 |
| AS32711US | WCGNC - Wake County Government | 256 | — | 1 |
| AS394210US | SYMBOTAS-1 - Symbotic | 256 | — | 1 |
| AS55136US | CF-ASN - CARLTON FIELDS, P.A. | 256 | — | 1 |
| AS398783US | SLICE - Slice Wireless Solutions, Inc. | 256 | — | 1 |
| AS62773US | WEISCAPITAL - Weis Capital, Inc | 256 | — | 1 |
| AS400096US | PIKES-PEAK-REGIONAL-BUILDING-80910 - Pikes Peak Regional Building Department | 256 | — | 1 |
| AS16434US | HCM - Hitachi Cable Manchester, INC | 256 | — | 1 |
| AS26417US | SCOPIA-NY - Scopia Fund Management, LLC | 256 | — | 1 |
| AS33381US | AIM-52-ASN - ABS Investment Management LLC | 256 | — | 1 |
| AS19846US | UNION-COLLEGE - Union College | 256 | — | 1 |
| AS14767US | IOLANI-ACCESS - 'Iolani School | 256 | — | 1 |
| AS25643US | NEWERA-01 - New Era Technology, Inc | 256 | — | 1 |
| AS26861US | ROCKLIN-ASN - First Technology Federal Credit Union | 256 | — | 1 |
| AS32550US | EQUINIX-EC-SE - Equinix, Inc. | 256 | 1 | 2 |
| AS27173US | WEEMO-AS-1 - Sightcall Inc. | 256 | — | 1 |