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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218.2M | 25,525 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,309 |
| 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.
32,245 autonomous systems registered to United States. Click an AS for detail.
| 73M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,898 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,000 |
| AS701US | UUNET - Verizon Business | 43.6M | 991 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 768 |
| — |
| 3 |
| AS394792US | RAYUS-AS - RAYUS Radiology | 768 | — | 3 |
| AS29935US | COTNET - City of Tampa, Florida | 768 | — | 3 |
| AS15358US | AEL-INET - American Equity Investment Life Insurance Company | 768 | — | 2 |
| AS33403US | HEIYO-TELECOM - HEIYO CLOUD CORP. | 768 | — | 3 |
| AS394599US | FSN - Full Service Networking | 768 | — | 2 |
| AS19312US | JOHN-MUIR-HEALTH - John Muir Health | 768 | — | 3 |
| AS39974US | ALTITUDE-ISP - Altitude ISP LLC | 768 | — | 3 |
| AS55117US | LVSCU - Long View Systems Corporation (USA) | 768 | — | 3 |
| AS399014US | ESSLUX - Essilor of America, Inc. | 768 | — | 3 |
| AS20315US | MCHENRY-COUNTY-AS1 - McHenry County | 768 | — | 3 |
| AS394861US | LJI - La Jolla Institute for Immunology | 768 | — | 3 |
| AS21729US | CROWN-EQUIPMENT - Crown Equipment Corporation | 768 | — | 2 |
| AS14280US | NETNATION - Ntirety, Inc. | 768 | 1 | 4 |
| AS394962US | PCT-ASN1 - PENNSYLVANIA COLLEGE OF TECHNOLOGY | 768 | — | 3 |
| AS19681US | DIGGIO - Networkitects, Inc. | 768 | 65.5K | 3 |
| AS16778US | CCHCS-2-ASN-1 - Cook Children's Health Care System | 768 | — | 2 |
| AS399651US | TBBK-USCOLO01 - The Bancorp Incorporated | 768 | — | 3 |
| AS40793US | LINKEDIN - LinkedIn Corporation | 768 | 1 | 4 |
| AS54593US | ATHEN-EPOC - Athenahealth | 768 | — | 3 |
| AS46718US | BTCONF-SON - BT Conferencing | 768 | — | 3 |
| AS396281US | AGCOMTECH - AGILITY COMMUNICATIONS AND TECHNOLOGY SERVICES COMPANY | 768 | — | 3 |
| AS396555US | VRSN-AC50-340 - VeriSign Global Registry Services | 768 | 7 | 10 |
| AS54131US | OKLAHOMA-HEART-HOSPITAL - Oklahoma Heart Hospital, LLC | 768 | — | 3 |
| AS63105US | NEILL-BTR - Neill Corporation | 768 | — | 3 |
| AS26255US | OAKTONCOMMUNITYCOLLEGE - Oakton Community College | 768 | — | 3 |
| AS16659US | CROWN-AS-1 - Crown Castle USA | 768 | — | 3 |
| AS30551US | ASC-163-ASN01 - AK Steel Corporation | 768 | — | 2 |
| AS14292US | CSC-VISA - CSRA Consular Services Inc. | 768 | — | 3 |
| AS46268US | PADRES-01 - San Diego Padres | 768 | — | 2 |
| AS21860US | FL-GRIP - FOLEY & LARDNER LLP | 768 | — | 3 |
| AS14301US | EVEREST-INTERNET - Everest Global Services | 768 | — | 3 |
| AS36336US | NATIXIS - Natixis Advisors, LLC | 768 | — | 3 |
| AS394569US | REACHMAILAR011 - ReachMail Inc. | 768 | — | 3 |
| AS400613US | APOG-STVC - Apogee Telecom Inc. | 768 | — | 2 |
| AS10666US | ALLERGAN - Allergan, Inc. | 768 | — | 3 |
| AS15096US | SONN Steven Noble | 768 | 2 | 5 |
| AS11199US | SHOWNETSAS - showNets LLC | 768 | — | 3 |
| AS11842US | REGAL-ENTERTAINMENT-AS - Regal Entertainment Group | 768 | — | 3 |
| AS11160US | COSTAR-SANDIEGO - COSTAR GROUP Inc. | 768 | — | 3 |
| AS63191US | WEALTHFRONT-1 - Wealthfront Corporation | 768 | — | 3 |
| AS402292US | FYRA-STACK-LLC - Fyra Stack LLC | 768 | 2 | 4 |
| AS40817US | BMC-AUS - BMC Software, Inc. | 768 | — | 3 |
| AS19389US | GOLUB - GOLUB CORPORATION | 768 | — | 3 |
| AS397493US | NINECLOUD - Ninecloud Services, Inc. | 768 | 11 | 14 |
| AS398895US | HBFF-ASN-01 - Hazelden Betty Ford Foundation | 768 | — | 3 |
| AS32180US | ROCKET-SIRIUS - ROCKET SOFTWARE INC | 768 | — | 2 |