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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 | 3,139 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,186 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,242 |
| 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 | 383 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,669 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,948 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,373 |
| 512 |
| — |
| 2 |
| AS395549US | AEINSTEINCOM - Albert Einstein College Of Medicine Inc. | 384 | — | 2 |
| AS394558US | SUNOVION - Sumitomo Pharma America, Inc. | 384 | — | 2 |
| AS36708US | ILSHEALTH-01 - ILS Health | 320 | — | 2 |
| AS32822US | TEAMUCC - C.O.P.S. Monitoring | 288 | — | 2 |
| AS395054US | CDPHP - CDPHP | 288 | — | 2 |
| AS7019US | NTTA-7019 - NTT America, Inc. | 288 | 2 | 4 |
| AS21639US | BCBSLA-ASN - Blue Cross Blue Shield Of Louisiana | 264 | — | 2 |
| AS401494US | FUTURECONNECTNETWORK - futureConect LLC | 264 | — | 2 |
| AS1407US | QUOTEMEDIA - Quotemedia | 264 | — | 2 |
| AS25727US | RBNA-HQ - RED BULL NORTH AMERICA, INC. | 256 | — | 1 |
| AS40277US | CROUSE-HOSPITAL-AS - Crouse Hospital | 256 | — | 1 |
| AS26257US | WASHINGTON-COUNTY-OF-PA - County Of Washington | 256 | — | 1 |
| AS395637US | RFKRACING - Roush Fenway Keselowski Racing, LLC | 256 | — | 1 |
| AS11457US | DIGITALREALTY-IT-03 - Digital Realty Trust, L.P. | 256 | — | 1 |
| AS400020US | GRANTEP-ASN - Grant Supplies | 256 | — | 1 |
| AS29931US | ACE-002 - Ace Data Centers II, L.L.C. | 256 | — | 1 |
| AS1492US | DNIC-ASBLK-01492-01493 - Headquarters, USAISC | 256 | — | 1 |
| AS54050US | GPMLIFE - Government Personnel Mutual Life Insurance Company | 256 | — | 1 |
| AS400478US | STMBOYD-NET - Stephen M Boyd Development Limited Liability Company | 256 | 1 | 2 |
| AS402163US | AS-SKYVAULT - SkyVault AI | 256 | 256 | 2 |
| AS397992US | AXION - Axion | 256 | — | 1 |
| AS27231US | CARILION-HEALTH-SYSTEM - CARILION HEALTH SYSTEM | 256 | — | 1 |
| AS15232US | RODGERSBUILDERS - Rodgers Builders | 256 | — | 1 |
| AS46631US | CITYOFWHEATON - City of Wheaton | 256 | — | 1 |
| AS62580US | PILOT-CORP - Pilot Fiber, Inc. | 256 | — | 1 |
| AS398921US | OVERDRIVE-ASN-01 - OverDrive, Inc. | 256 | — | 1 |
| AS399424US | RELEASEPOINT1 - Releasepoint | 256 | — | 1 |
| AS396343US | PRTNET - Blurb, Inc. | 256 | — | 1 |
| AS400225US | NORDSON-192 - Nordson Corporation | 256 | — | 1 |
| AS393979US | OE3-HQ-BGP - Operating Engineers Local #3 | 256 | — | 1 |
| AS27189US | MARTEN-TRANSPORT-LTD - Marten Transport, Ltd. | 256 | — | 1 |
| AS14637US | SBM-ASN - STATER BROS MARKETS | 256 | — | 1 |
| AS32140US | JEWELRY-TELEVISION - Jewelry Television | 256 | — | 1 |
| AS26376US | IBC4-AS - International Bonded Couriers, Inc. | 256 | — | 1 |
| AS32992US | ITECHTOOL-ASN-SF - ITechTool Incorporated | 256 | — | 1 |
| AS54815US | TSI-SEMICONDUCTORS - TSI SEMICONDUCTORS | 256 | — | 1 |
| AS23527US | CHRISTCATHEDRALCA - Christ Catholic Cathedral Corporation | 256 | — | 1 |
| AS401136US | LCI-HQ - LC Industries Inc. | 256 | — | 1 |
| AS399665US | ZOLL-BROOMFIELD - ZOLL Medical Corporation | 256 | — | 1 |
| AS396301US | YETI-COOLERS - YETI Coolers, LLC | 256 | — | 1 |
| AS395646US | NEUTRAL-NETWORKS - Neutral Networks | 256 | 65.5K | 2 |
| AS394309US | HOUSTON-BAPTIST-UNIVERSITY - HBU.edu | 256 | — | 1 |
| AS400663US | RAOTTDI - Tallahassee Diagnostic Imaging | 256 | — | 1 |
| AS397918US | ADIDAS-AMERICA - adidas America, Inc. | 256 | — | 1 |
| AS400344US | ETFH-PAL-01 - East Texas Broadband | 256 | — | 1 |
| AS54663US | HALIFAXHEALTH-WEBAPPS - Halifax Health | 256 | — | 1 |