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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 | 3,138 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,163 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,240 |
| 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 | 373 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,656 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,941 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,379 |
| 1K |
| — |
| 3 |
| AS46917US | PRAGMA-FS-01 - Pragma Financial Systems | 1K | — | 4 |
| AS200655US | GROUPM-FR-AS WPP Group USA, Inc. | 1K | — | 3 |
| AS36163US | HILLCO-LTD - HILLCO, LTD | 1K | — | 1 |
| AS54375US | CENTRE-COLLEGE - Centre College | 1K | — | 3 |
| AS19904US | COL - City of Longview | 1K | — | 4 |
| AS40343US | USSI-SKYFIBER - USSI Global | 1K | 1 | 4 |
| AS14021US | PSECU - Pennsylvania State Employees Credit Union | 1K | — | 4 |
| AS394545US | WRIKE-AS - Wrike, Inc. | 1K | — | 4 |
| AS11374US | WORKSMART-NETWORK-BACKBONE - Panterra Networks, Inc. | 1K | 3 | 7 |
| AS1439US | SBISD - Spring Branch Independent School District | 1K | — | 1 |
| AS142616US | MNI-AS-AP - Misaka Network, Inc. | 1K | 4.1K | 10 |
| AS399404US | VELCO-SP-NET - Vermont Electric Power Company, Inc. | 1K | — | 1 |
| AS6450US | PIXNET-AS - Providers Internet Exchange | 1K | — | 3 |
| AS16838US | VERISIGN-CORP - VeriSign Infrastructure & Operations | 1K | — | 4 |
| AS22265US | GENESIS-OMAHA-NE - GENESIS SYSTEMS, LLC | 1K | — | 1 |
| AS399071US | BELLIN-MEMORIAL-HOSPITAL - Bellin Memorial Hospital, Inc. | 1K | — | 3 |
| AS5697US | NAVE-AS-5697 - Navisite Opco LLC | 1K | — | 1 |
| AS32525US | UNDER-ARMOUR-PERFORMANCE-APPAREL - Under Armour, Inc. | 1K | — | 3 |
| AS22084US | GEI-NET - John Hagee Ministries | 1K | — | 3 |
| AS10359US | EPICSYS - Epic Systems Corporation | 1K | 1 | 2 |
| AS36562US | PRACTICE-VELOCITY - Practice Velocity, LLC. | 1K | — | 4 |
| AS55209US | HACKENSACKUMC - Hackensack University Medical Center | 1K | — | 4 |
| AS17034US | GL-945-17034 - Gozunga LLC | 1K | 2K | 3 |
| AS26237US | NUVASIVE-HQ - NuVasive Inc. | 1K | — | 3 |
| AS17406US | PSCU-NET1 - PSCU INCORPORATED | 1K | — | 4 |
| AS402384US | STACKADDRESS - StackAddress | 1K | — | 1 |
| AS1034US | AMS-BTC-CRAY - HEWLETT PACKARD ENTERPRISE COMPANY | 1K | — | 1 |
| AS19988US | PORTALSYSTEMS - Portal Systems, Inc. | 1K | — | 1 |
| AS54411US | ONEGAS-BGP - ONE Gas, Inc. | 1K | — | 4 |
| AS40739US | SPYFU - Spy Fu, Inc. | 1K | — | 3 |
| AS53527US | COUNTY-OF-LOS-ANGELES-SHERIFFS-DEPARTMENT - Los Angeles Sheriff's Department | 1K | — | 4 |
| AS30001US | TECHEVOLUTION - Techevolution | 1K | — | 1 |
| AS398979US | RINGER-MOBILE-01 - Ringer | 1K | — | 2 |
| AS11354US | CAROLINAS-HEALTHCARE-SYSTEM - Carolinas Healthcare System | 1K | — | 2 |
| AS23296US | LINCARE-HOLDINGS-INC - LINCARE INC | 1K | — | 4 |
| AS402302US | HOSTMYAPPLE - HostMyApple Inc. | 1K | — | 1 |
| AS398908US | SMYTHNET - Smyth Technology Group, Incorporated | 1K | — | 3 |
| AS40502US | AAA-ACS - The Auto Club Group | 1K | — | 1 |
| AS17026US | SHRSS-ASN-01 - Seminole Hard Rock Support Services,LLC | 1K | — | 3 |
| AS5054US | REALNETWORKS - REALNETWORKS LLC | 1K | — | 1 |
| AS62942US | CARRIERX-MI-01 - FreeConferenceCall.com | 1K | — | 3 |
| AS46927US | ANS1 - Radio Training Network Inc. | 1K | — | 1 |
| AS18500US | PACCAR - PACCAR INFORMATION TECHNOLOGY DIVISION | 1K | — | 3 |
| AS40454US | MMUIA-NET-15 - Manning Municipal Utilities | 1K | — | 1 |
| AS46814US | MEDICA-NET - Medica Health Plans | 1K | — | 4 |
| AS398854US | ULTRANETWIFI - Ultranet, LLC | 1K | — | 2 |