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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 |
| AS397149US | SDSU-SNAPDRAGON - San Diego State University | 256 | — | 1 |
| AS54704US | RCU - Royal Credit Union | 256 | — | 1 |
| AS20293US | WU - THE WESTERN UNION COMPANY | 256 | — | 1 |
| AS402937US | SIDEGUIDE - Sideguide | 256 | — | 1 |
| AS10390US | TELECHECK - Fiserv Solutions, LLC | 256 | 1 | 2 |
| AS14612US | VNC-MAIN-LIST - Velios Networks Corp. | 256 | — | 1 |
| AS40818US | INSTADART - Instadart, Inc. | 256 | 12 | 10 |
| AS397881US | STINGERS - Stingers Inc. | 256 | 1 | 2 |
| AS398331US | 1FBUSA-PROD - 1st Financial Bank USA | 256 | — | 1 |
| AS393305US | G2BRS-NET - G2 | 256 | — | 1 |
| AS397345US | TCS - THE CONTAINER STORE, INC | 256 | — | 1 |
| AS393615US | FASCET - Fascet LLC | 256 | — | 1 |
| AS26846US | NAZARETH-COLLEGE - Nazareth College of Rochester | 256 | — | 1 |
| AS50414US | CodeBGP-Monitor ThousandEyes LLC | 256 | 3 | 4 |
| AS395589US | HACC - Harrisburg Area Community College | 256 | — | 1 |
| AS62990US | STCHARLESHEALTHSYSTEM - St. Charles Health System, Inc. | 256 | — | 1 |
| AS398730US | SMARTPATH - SmartPath Technology, LLC | 256 | — | 1 |
| AS396345US | FOXGUARD-SOLUTIONS-INC - FoxGuard Solutions, Inc. | 256 | — | 1 |
| AS32318US | CHSDC - Center for Hellenic Studies | 256 | — | 1 |
| AS29820US | VSI - Visionet Systems Inc. | 256 | — | 1 |
| AS401454US | REDLINEINTERNET - Red Line Internet Services LLC | 256 | — | 1 |
| AS3742US | ROCKISLAND2 - Rock Island Communications | 256 | — | 1 |
| AS13862US | NCSU-SNARE - North Carolina State University | 256 | — | 1 |
| AS393493US | LOTTEBIOLOGICS - Lotte Biologics USA, LLC | 256 | — | 1 |
| AS54308US | RETOUCHUP - RETOUCHUP.COM | 256 | — | 1 |
| AS1813US | DXC-AS1810-AS1815 - DXC US Latin America Corporation | 256 | — | 1 |
| AS395276US | CSD-ASN-1 - Cabot Public Schools | 256 | — | 1 |
| AS19266US | TOTES-ISOTONER - Totes Isotoner Corporation | 256 | — | 1 |
| AS36736US | UTMG-TW-MNWX - UT Medical Group | 256 | — | 1 |
| AS396836US | LYMEFIBER-01 - LymeFiber | 256 | 65.5K | 2 |
| AS396035US | KENTUCKY-WIFI - Compulinx, Inc. | 256 | — | 1 |
| AS397530US | SOFTEON - SOFTEON, INC | 256 | — | 1 |
| AS13975US | NYCPM - NYCPM | 256 | — | 1 |
| AS139706US | TNSI-AS-AP - Transaction Network Services | 256 | — | 1 |
| AS397738US | DKM10-ARIN - The Reynolds and Reynolds Company | 256 | — | 1 |
| AS26977US | BRG-SPORTS-AS26977 - BRG Sports, Inc. | 256 | — | 1 |
| AS12159US | SECURITIESAMERICA - Securities America Inc. | 256 | 1 | 2 |
| AS402201US | NISHNANET - Technically Awesome, LLC | 256 | 65.5K | 2 |
| AS40163US | LSNJ-NETWORK - Legal Services of New Jersey | 256 | — | 1 |
| AS402320US | WELCHCO-DC1 - Welch | 256 | — | 1 |
| AS398867US | OREGON-IDAHO-UTIL - Oregon-Idaho Utilities, Inc. | 256 | — | 1 |
| AS13558US | CMIC-HO - Church Mutual Insurance Company | 256 | — | 1 |
| AS394791US | CITY-OF-SCHERTZ-CS - City of Schertz | 256 | — | 1 |
| AS396327US | SENECA-COUNTY - Buckeye IT Services LLC | 256 | — | 1 |
| AS395288US | COLLIN-EDU - Collin County Community College District | 256 | — | 1 |
| AS22856US | NUSOCLOUD-CT - NUSO | 256 | — | 1 |