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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 | 21,171 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,241 |
| 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 | 3,667 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,951 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,368 |
| US-NEW-ERA - US NEW ERA INTERNET CORP |
| 512 |
| 7 |
| 9 |
| AS30435US | H9K-1 - Hal 9000 LLC | 512 | — | 2 |
| AS397323US | MEM - MISSOURI EMPLOYERS MUTUAL INSURANCE COMPANY | 512 | — | 2 |
| AS47036US | HCPS-AS - Halifax County Public Schools | 512 | — | 2 |
| AS399967US | HOMESERVEUSA-BGP-ASN - HomeServe USA Corp | 512 | — | 2 |
| AS6006US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | 512 | — | 2 |
| AS399419US | PSI-CORE-OH1 - Prime Servers, Inc. | 512 | — | 2 |
| AS396135US | AS-WOODMENLIFE-1 - Woodmen of the World Life Insurance Society | 512 | — | 2 |
| AS11327US | NCI-GROUP-INC - NCI Group, Inc. | 512 | — | 2 |
| AS400848US | DHI9PUT - DHI TECHNICAL SERVICES LLC | 512 | 256 | 2 |
| AS397445US | 1314-DOUGLAS-01 - NATIONAL INDEMNITY COMPANY | 512 | — | 1 |
| AS30390US | IMERYS-UK-PARMOOR-ASNUMBER - Imerys Pigments | 512 | — | 2 |
| AS11145US | VRIS-11145-11149 - Verizon Business | 512 | — | 1 |
| AS54649US | ADC-ATLANTA - AutomationDirect.com, Inc. | 512 | — | 1 |
| AS11931US | NYC-EDC-165 - NYCEDC | 512 | — | 2 |
| AS23182US | GREENBRIER-AS - THE GREENBRIER COMPANIES, INC. | 512 | — | 1 |
| AS397362US | HTS-WIRELESS-01 - Hudson Technology Solutions, Inc. | 512 | — | 2 |
| AS46402US | CO3-METHOD-01 - Company 3 | 512 | — | 2 |
| AS400306US | PHEAA-141200 - PHEAA, AES, FedLoan Servicing | 512 | — | 2 |
| AS23263US | EL-INTERNET-NORTHWEST - E.L. Internet Northwest | 512 | — | 2 |
| AS21801US | JEWELERS - Jewelers Mutual Insurance Company | 512 | — | 2 |
| AS399285US | CSLICO - Citizens Financial Corporation | 512 | — | 2 |
| AS16769US | AS16769 - Sotheby's Inc. | 512 | — | 2 |
| AS40471US | INCYTECORP - Incyte Corporation | 512 | — | 2 |
| AS54593US | ATHEN-EPOC - Athenahealth | 512 | — | 2 |
| AS20217US | PERCEPTA-GW1-AS - Percepta | 512 | — | 2 |
| AS398076US | OVERTURE-LIFE - Overture Life, Inc. | 512 | 8 | 10 |
| AS53381US | WAGWEB - Wagner-Weber Associates, Inc. | 512 | — | 2 |
| AS14911US | TMGAS - Taylor Made Golf Company, Inc. | 512 | — | 2 |
| AS400699US | KITSAPWIFI - KitsapWiFi | 512 | 4.1K | 3 |
| AS3952US | TELLABS-ASN - Nokia of America Corporation | 512 | — | 1 |
| AS395915US | ENS - Edge Network Services LLC | 512 | 17 | 4 |
| AS393738US | CAMEO-GLOBAL - Cameo Solutions | 512 | — | 2 |
| AS398219US | INMAR-DC2 - Inmar, Inc. | 512 | — | 1 |
| AS401929US | BANKAI - Bankai Group Inc | 512 | — | 2 |
| AS27568US | WAVE-LAB - Wave Broadband | 512 | 65.5K | 2 |
| AS214738US | WEHOST-AS WEHOST LLC | 512 | — | 2 |
| AS395989US | DAYSTAR-3901 - Daystar Television Network | 512 | — | 2 |
| AS26011US | LMCSC - Lexington Medical Center | 512 | — | 2 |
| AS1219US | NCUBE-OREGON-AS - Oracle Corporation | 512 | 1 | 3 |
| AS46140US | CSI - CAMP SYSTEMS INTERNATIONAL | 512 | — | 2 |
| AS394209US | ECBOCES-VNETS - East Central BOCES | 512 | 65.5K | 3 |
| AS23239US | JAVELINA - Irongrove LLC | 512 | 2 | 4 |
| AS394679US | GENERAC - Generac Power Systems, Inc. | 512 | — | 2 |
| AS17189US | MITSUBISHI-UFJ-TRUST-BANKING - Mitsubishi UFJ Trust & Banking Corporation | 512 | — | 2 |
| AS396939US | AANIIN - Fond du Lac Band of Lake Superior Chippewa | 512 | — | 1 |
| AS6462US | NATGEOGRAPH-AS - National Geographic Society | 512 | — | 1 |