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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 | 3,136 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 210.5M | 20,721 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 638 |
| AS721US | DNIC-ASBLK-00721-00726 - United States Department of Defense (DoD) | 73.1M | 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC |
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.
| 68.3M |
| 366 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 66.4M | 1,106 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 47.9M | 3,574 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,926 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.2M | 4,508 |
| 68.4K |
| 2 |
| 6 |
| AS3428US | ESNET-AS - ESnet | 68.4K | 16 | 6 |
| AS22522US | ULALAUNCH - United Launch Alliance, LLC | 68.4K | — | 12 |
| AS15171US | TOMBIGBEE-FIBER - Tombigbee Fiber LLC | 68.1K | — | 82 |
| AS5724US | UMASSMED - University of Massachusetts Medical School | 68.1K | — | 4 |
| AS319US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 68.1K | 256 | 9 |
| AS11915US | US-TELEPACIFIC - TPx Communications | 68.1K | 77.8K | 97 |
| AS21713US | BULLOCH - Bulloch County Rural Telephone Cooperative, Inc. | 68.1K | 65.5K | 21 |
| AS5766US | IHS-MD-AS - Indian Health Service | 68.1K | 2 | 11 |
| AS16920US | WINDRIVER - Wind River Systems, Inc. | 68.1K | 260 | 15 |
| AS63US | LL-MI - Massachusetts Institute of Technology | 67.8K | — | 6 |
| AS342US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 67.8K | 256 | 8 |
| AS396178US | G-CLOUD-AGENT-TRAFFIC - Google LLC | 67.8K | — | 3 |
| AS19050US | TIC-DHHS-INTERIOR - U.S. Department of Health & Human Services | 67.8K | 33 | 13 |
| AS347US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 67.8K | 256 | 8 |
| AS12005US | SC-AS - University of South Carolina | 67.8K | — | 3 |
| AS16793US | DATA-TRONICS - ArcBest Technologies, Inc. | 67.8K | 4.1K | 11 |
| AS13548US | CHARLESTON-AS - College of Charleston | 67.8K | — | 3 |
| AS10754US | GOV-FRB-BOG - Federal Reserve Board | 67.8K | — | 6 |
| AS32703US | IFN-NET - Zayo Bandwidth | 67.8K | 1.1M | 17 |
| AS32035US | CCDT-AS - Sangoma US Inc. | 67.8K | 66.3K | 51 |
| AS33398US | HOSTA-LAS - Miva Merchant, Inc. | 67.8K | 24.6K | 18 |
| AS10441US | JEG-1 - Jacobs Engineering Group Inc. | 67.6K | — | 6 |
| AS11101US | PRISMA HEALTH - Prisma Health | 67.6K | — | 9 |
| AS401240US | OEA-HQ - Ohio Education Association | 67.6K | — | 2 |
| AS15196US | MDDOT - Maryland Department of Transportation | 67.6K | — | 7 |
| AS17130US | JONESDAY - Jones Day | 67.6K | — | 4 |
| AS3705US | GPO-NET - U.S. Government Publishing Office | 67.6K | — | 2 |
| AS393256US | DTE-ASN - DTE Energy Company | 67.6K | 7 | 12 |
| AS395789US | CITYOFINDY - City of Indianapolis | 67.6K | — | 2 |
| AS4531US | MEDWEB - Nexsys Electronics, Inc. | 67.6K | — | 6 |
| AS11650US | PLDI - Pioneer Long Distance Inc. | 67.6K | 65.5K | 14 |
| AS400072US | THUND-20 - THUNDERBOX INC | 67.6K | 16.4K | 23 |
| AS7202US | FAMU - Florida A & M University | 67.6K | — | 3 |
| AS16801US | ET-NET - Energy Transfer LP | 67.6K | — | 7 |
| AS33194US | CAS-AUTONOMOUS-SYSTEM - Chemical Abstracts Service | 67.6K | — | 9 |
| AS7800US | ALLINA-HEALTH-SYSTEM-INC - Allina Health System, Inc. | 67.3K | — | 5 |
| AS36300US | PCSB-ASN - Pinellas County Schools | 67.3K | — | 10 |
| AS687US | DNIC-AS-00687 - United States Department of Defense (DoD) | 67.3K | 1 | 6 |
| AS62874US | WEB2OBJECTS - Web2Objects LLC | 67.3K | 5.1K | 77 |
| AS394990US | STRATUS - Stratus Technologies, Inc. | 67.3K | — | 8 |
| AS42808US | VIRTELA-NET-VNLAMS1 NTT Global Networks Incorporated | 67.3K | — | 8 |
| AS194US | UCAR-AS - University Corporation for Atmospheric Research | 67.3K | 257 | 7 |
| AS26548US | PUREVOLTAGE-INC - PureVoltage Hosting Inc. | 67.3K | 21K | 143 |
| AS46103US | UWW-EDU-ASN - University of Wisconsin Whitewater | 67.3K | 65.5K | 7 |
| AS22809US | AMFAM-INS - American Family Insurance | 67.1K | — | 19 |
| AS328US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 67.1K | — | 7 |