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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218.2M | 25,525 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,309 |
| 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.
32,245 autonomous systems registered to United States. Click an AS for detail.
| 73M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,898 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,000 |
| AS701US | UUNET - Verizon Business | 43.6M | 991 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 768 |
| — |
| 3 |
| AS40689US | FTSL-AS - FTS INTERNATIONAL SERVICES, LLC | 768 | — | 3 |
| AS18600US | WPIA-NET - R. Fritz Enterprises Inc. | 768 | — | 3 |
| AS17341US | AS17341 - StorageCraft Technology, LLC | 768 | — | 3 |
| AS35910US | LOVES-TRAVEL-STOPS - Love's Travel Stops & Country Stores Inc. | 768 | — | 2 |
| AS63283US | RL-AS - Red Lobster | 768 | — | 3 |
| AS36488US | SWA-INET - Southwest Airlines Co. | 768 | — | 3 |
| AS22030US | ZIPCON-AS-1 - Zipcon LLC | 768 | — | 2 |
| AS46700US | KANDY-NA - AVCtechnologies USA Inc. | 768 | — | 3 |
| AS25966US | COHERENT - Coherent Inc. | 768 | — | 3 |
| AS399184US | COLVILLE-ASN-01 - Confederated Tribes of the Colville Reservation | 768 | — | 3 |
| AS393342US | EA-ASHBURN - Electronic Arts, Inc. | 768 | — | 2 |
| AS36431US | PIH1 - PIH Health, Inc. | 768 | — | 2 |
| AS393667US | FARSIGHT - Farsight Security, Inc | 768 | 3 | 6 |
| AS54971US | BROWN-TECHNOLOGIES - Brown Technologies, LLC | 768 | — | 3 |
| AS25951US | HPINC - HP Inc. | 768 | — | 2 |
| AS55218US | IWISP-LLC - iWiSP llc | 768 | — | 3 |
| AS398850US | CHEYNEY-UNIVERSITY-OF-PA - Cheyney University Of Pennsylvania | 768 | — | 2 |
| AS40695US | FHLB-OF - FHLBanks - Office of Finance | 768 | — | 3 |
| AS397156US | PGEC - RURALBAND | 768 | 4.1K | 4 |
| AS23474US | SPGLOBAL-SNL-ACQUIRED - S&P Global Inc. | 768 | — | 3 |
| AS36711US | FIRST-ACCEPTANCE-CORP - FIRST ACCEPTANCE INSURANCE COMPANY OF TENNESSEE, INC. | 768 | 16 | 4 |
| AS400348US | BOLD-FR-NET - Apogee Telecom Inc. | 768 | — | 2 |
| AS20160US | LSCPA - Lamar State College - Port Arthur | 768 | — | 3 |
| AS395060US | MACMILLAN-PUBLISHERS - Macmillan Publishers Inc | 768 | — | 3 |
| AS13816US | VIGTECHAS01 - Vigilant Technologies | 768 | — | 2 |
| AS11124US | FRIEDKIN - Friedkin Companies, Inc. | 768 | — | 3 |
| AS206646US | EHI-LDE-AS Enterprise Holdings, Inc. | 768 | — | 3 |
| AS402319US | BYOIP-ASN - TAIPEI101 | 768 | 1 | 3 |
| AS398731US | GOODMAN-MANUFACTURING-COMPANY - Goodman Manufacturing Company, L.P. | 768 | — | 3 |
| AS13426US | JUNO-DC-2 - Juno Online Services, Inc. | 768 | — | 3 |
| AS22340US | AS22340 - XONODE | 768 | — | 3 |
| AS400509US | ASIPFB - IPFB LLC | 768 | 1 | 4 |
| AS19127US | HNW-AK - Heritage NetWorks, LLC | 768 | 257 | 4 |
| AS14864US | GREENWICH - NatWest Markets Securities Inc. | 768 | — | 3 |
| AS393777US | DIGIARCH - State of WA Secretary of State | 768 | — | 2 |
| AS395066US | DIGITAL-TECHNOLOGY-GROUP - Digital Technology Group, LLC | 768 | — | 3 |
| AS22688US | DOLGENCORP - Dollar General Corporation | 768 | — | 3 |
| AS63355US | SALMON-BAY-TECHNOLOGY-01 - SALMON BAY TECHNOLOGY | 768 | — | 3 |
| AS394328US | BMC-PHX - BMC Software, Inc. | 768 | — | 3 |
| AS21759US | NRUCFC - National Rural Utilities Cooperative Finance Corporation | 768 | — | 3 |
| AS395394US | XYTEL - xyTel LLC | 768 | 65.5K | 5 |
| AS26189US | SCI-ASN - SCI Funeral & Cemetery Purchasing Cooperative, Inc. | 768 | — | 3 |
| AS40147US | UCBI - United Community Bank | 768 | — | 2 |
| AS394682US | CMP - Communications & Power Industries, LLC | 768 | — | 3 |
| AS399946US | AURORA-LEO - Pacific Dataport Inc. | 768 | — | 3 |
| AS29985US | AMN-HEALTHCARE - AMN Healthcare | 768 | — | 2 |