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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. | 218M | 23,961 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,299 |
| 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.
32,159 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 | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,998 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,341 |
| CSM-NY-AS - Cravath, Swaine & Moore LLP |
| 1.5K |
| — |
| 6 |
| AS13626US | WALGREENS - Walgreens Co | 1.5K | — | 6 |
| AS396526US | AS396526 - UNVIO, LLC | 1.5K | — | 6 |
| AS394671US | HCAS-1 - Hanson Communications, Inc. | 1.5K | — | 2 |
| AS219401US | YEAH-AS Yeah Tech LLC | 1.5K | — | 5 |
| AS30108US | XTX-DALL - EnLink Midstream Operating, LP | 1.5K | — | 3 |
| AS398229US | MCLLC-RANGE-01 - Mobile Communications, LLC | 1.5K | — | 2 |
| AS63290US | QCSTE-AS - QCSTelecom, Inc. | 1.5K | 65.5K | 4 |
| AS27268US | CHICKASAW - The Chickasaw Nation | 1.5K | — | 6 |
| AS393385US | NVI-SHARED - National Vision, Inc. | 1.5K | — | 6 |
| AS402436US | LV-NETWORKS - BEACON | 1.5K | — | 6 |
| AS16716US | LIVINGSTON-AS - Lake Livingston Communications Inc. | 1.5K | 65.5K | 5 |
| AS400137US | COZYCLOUD - CozyCloud IT | 1.5K | — | 2 |
| AS36673US | VECTREN63-64-13-1 - Vectren Utility Holdings, Inc. | 1.5K | — | 6 |
| AS396535US | ADJUST-US - adjust | 1.5K | 1 | 3 |
| AS22900US | ITRON - ITRON INC. | 1.5K | — | 3 |
| AS29730US | NOVOLINK - NovoLink Communications, Inc. - Houston | 1.5K | — | 5 |
| AS13453US | DSRGLOBAL-COM - DIVERSIFIED SYSTEMS RESOURCES, LTD | 1.5K | — | 3 |
| AS2908US | CITI1 - Citigroup Inc. | 1.5K | — | 6 |
| AS207063US | kentik-eu Kentik Technologies, Inc. | 1.5K | 2 | 5 |
| AS26550US | PROVIDENT-FUNDING-ASSOC - Provident Funding | 1.5K | — | 6 |
| AS23865US | NETINNOVATIONLLC-AS-AP - Net Innovation LLC | 1.5K | — | 6 |
| AS17309US | AS7260 - Roosevelt University | 1.5K | — | 6 |
| AS2729US | MG-431-2729 - One Call | 1.5K | — | 3 |
| AS20137US | USAGM-LAN - USAGM | 1.5K | — | 6 |
| AS14052US | STEPHENS - Stephens, Inc. | 1.5K | — | 6 |
| AS399247US | FASTLINK-01 - Fastlink Communications LLC. | 1.5K | — | 2 |
| AS400060US | EY-AS-DSFW - Ernst & Young LLP | 1.5K | — | 6 |
| AS36408US | CDNETWORKSUS-02 - CDNetworks Inc. | 1.5K | — | 6 |
| AS53373US | MATH-INC - Mathematica, Inc. | 1.5K | — | 6 |
| AS26437US | TCH-AS - THE CLEARING HOUSE PAYMENTS COMPANY L.L.C. | 1.5K | — | 6 |
| AS398571US | CLEVELAND-COUNTY-TEL-01 - CLEVELAND COUNTY TELEPHONE CO. INC. | 1.5K | — | 2 |
| AS62671US | UNIVERSITY-OF-COLORADO-SYSTEM - ECS-Infrastructure | 1.5K | — | 3 |
| AS215039US | nodesty Nodesty LLC | 1.5K | 18 | 9 |
| AS13581US | SOFTWAREHOUSE - SHI International Corp. | 1.5K | 1 | 7 |
| AS400069US | SONICSPECTRUM-01 - SonicPCS | 1.5K | — | 6 |
| AS7856US | EPPROACH-0 - Epproach Communications, LLC | 1.5K | — | 6 |
| AS14778US | YAHOO - Yahoo Holdings Inc. | 1.5K | 9 | 15 |
| AS399893US | RTC-MA-ASN-01 - Richmond Telephone Company LLC | 1.5K | 4.1K | 3 |
| AS55067US | CHILDRENSMN - Childrens Hospitals and Clinics of Minnesota | 1.5K | — | 3 |
| AS400063US | PTCBB - Pennsylvania Telephone Company | 1.5K | — | 3 |
| AS393507US | GUSHISYS - Gush I Systems | 1.5K | 16 | 6 |
| AS400384US | HOSTINGS-HOUSE-US - Hostings House | 1.5K | — | 3 |
| AS53605US | PHOEN-56 - PhoenixNAP LLC | 1.5K | — | 2 |
| AS26083US | NEWEDGE-ASN1 - Newedge Facilities Management, Inc. | 1.5K | — | 6 |
| AS23329US | AS23329 - Crown Castle Fiber LLC | 1.5K | — | 6 |
| AS57833US | Universal Universal Services of America, LP | 1.5K | — | 3 |