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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,681 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,370 |
| 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.
32,364 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 236 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,914 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,047 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,503 |
| 256 |
| — |
| 1 |
| AS23765US | EA-AU-AP - Electronic Arts, Australia | 256 | — | 1 |
| AS673US | DNIC-AS-00673 - Headquarters, USAISC | 256 | — | 1 |
| AS400407US | TRONOX-LLC - TRONOX LLC | 256 | — | 1 |
| AS55241US | XTRACTS - Xtracts, LLC | 256 | — | 1 |
| AS54348US | CAROMONT-HEALTH - CaroMont Health Inc. | 256 | — | 1 |
| AS46214US | LEFRED - Lefleur Transportation of Tupelo, Inc. | 256 | — | 1 |
| AS399877US | SEAPINES-01 - Sea Pines Resort, LLC | 256 | — | 1 |
| AS36270US | STERLING-TRADING-TECH-NY - STT Acquisition Intermediate Holdco, Inc. | 256 | — | 1 |
| AS207169US | Brayden-Net Brayden Herrell | 256 | — | 1 |
| AS393666US | COV-SML-NETWORKS - St. Mary's Health System | 256 | — | 1 |
| AS46363US | HOLYFAMILY - Holy Family University | 256 | — | 1 |
| AS22580US | GUARD - GUARD INSURANCE GROUP | 256 | — | 1 |
| AS399799US | BOLD-FURMAN - Apogee Telecom Inc. | 256 | — | 1 |
| AS395744US | COSTCO-TRAVEL - Costco Travel | 256 | — | 1 |
| AS30494US | FACTSET - FactSet Research Systems, Inc. | 256 | — | 1 |
| AS394050US | KIRBTECH - Kirbtech LLC | 256 | — | 1 |
| AS31813US | FREEDOMLINX-TECHNOLOGIES - FreedomLinx Technologies | 256 | — | 1 |
| AS399802US | FIBERSMITH-CBLOCK-170-31-11 - The Fibersmith Company | 256 | — | 1 |
| AS402092US | WEBSEC - WEBSEC | 256 | — | 1 |
| AS40530US | GREATLAND - Greatland Corporation | 256 | — | 1 |
| AS29776US | LRRANET - Lubbock Reese Redevelopment Authority | 256 | — | 1 |
| AS7816US | CTC - Concurrent Technologies Corporation | 256 | — | 1 |
| AS399582US | VLL-ASN-01 - Voice Logic, LLC. | 256 | — | 1 |
| AS395024US | AS-PIKEMEDCENTER - Pikeville Medical Center | 256 | — | 1 |
| AS398144US | FOS - Fiserv Solutions, LLC | 256 | — | 1 |
| AS393904US | CGTNV - Century Gaming Technologies | 256 | — | 1 |
| AS31807US | RACKALOHA1 - RackAloha, LLC | 256 | 16 | 2 |
| AS11832US | AS-BANDBCOCO - Bridge & Byte Consulting Co. | 256 | 3 | 4 |
| AS46711US | TRUEVALUE-ASN-01 - True Value Company, L.L.C. | 256 | — | 1 |
| AS53487US | VHS-BOMA - Vanguard Health Management, Inc. | 256 | — | 1 |
| AS401854US | VELOCIRAPTOR-01 - Velociraptor LLC | 256 | 1 | 2 |
| AS22416US | LIBERTYDENTALPLAN - Liberty Dental Plan | 256 | — | 1 |
| AS63244US | ASG - American Seafoods Company LLC | 256 | — | 1 |
| AS395673US | ALABAMA-LIGHTWAVE - ALABAMA LIGHTWAVE, INC. | 256 | 256 | 2 |
| AS399701US | NWW-PHX-1 - NAVAERA WORLDWIDE, LLC | 256 | — | 1 |
| AS26436US | IMS-ASN - Inperium Management Services, Inc. | 256 | — | 1 |
| AS393541US | ESS-CORP - EXTRA SPACE STORAGE | 256 | — | 1 |
| AS401925US | GRAPE-AWS-1 - Grapevine Labs LLC | 256 | — | 1 |
| AS402455US | VENTURE-DEVELOPMENT-LLC - Venture | 256 | 3 | 4 |
| AS393919US | DR - BIDS Trading L.P. | 256 | — | 1 |
| AS40137US | AWM-INVESTMENT - AWM Investment Company, Inc. | 256 | — | 1 |
| AS30363US | GLOBALRESPONSEUSA - Global Response Corporation | 256 | — | 1 |
| AS40018US | DENDREON-DENDREON-PHARMACEUTICALS-LLC-US - Dendreon Pharmaceuticals LLC | 256 | — | 1 |
| AS42037US | Mozilla-Berlin Mozilla Corporation | 256 | 1 | 2 |
| AS63464US | SUNSASN - THE PHOENIX SUNS | 256 | — | 1 |
| AS11174US | AS-ATHEN-1 - Athenahealth | 256 | — | 1 |