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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 | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,661 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,361 |
| 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.
32,363 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 | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,490 |
| 512 |
| — |
| 2 |
| AS16981US | EMMIS-1 - Emmis Communications Corp. | 512 | — | 2 |
| AS13971US | FDS-AS-NY - HedgeServ Corporation | 512 | — | 2 |
| AS396505US | EMC - ENLOE MEDICAL CENTER | 512 | — | 1 |
| AS32344US | CSD99 - Community High School District 99 | 512 | — | 2 |
| AS393787US | CEG - Citizens Energy Group | 512 | — | 2 |
| AS398098US | LA-COLL-INET - City National Bank | 512 | — | 2 |
| AS46084US | ASRCFH-NET - ASRC FEDERAL HOLDING COMPANY, LLC | 512 | — | 2 |
| AS32481US | OSCEOLA - Osceola County | 512 | — | 2 |
| AS54266US | ABCFINANCIAL - ABC Financial Services, Inc. | 512 | — | 2 |
| AS395183US | ETEC-CORP-AS - ETEC | 512 | — | 2 |
| AS25758US | MEI - MIDWEST EXPRESS INC | 512 | — | 2 |
| AS54385US | TOLLESON - City of Tolleson | 512 | — | 2 |
| AS400441US | HYPHA-US1 - WINAC | 512 | — | 2 |
| AS36027US | CLOUDWYZE - CloudWyze, Inc. | 512 | — | 1 |
| AS394623US | AHA-MH-BGP - American Hospital Association | 512 | — | 2 |
| AS399533US | TATRA - Tatra Services Inc. | 512 | 4.4K | 4 |
| AS402221US | NET - Exaserver LLC | 512 | — | 2 |
| AS54528US | RICHIE-USA - Richie Software USA, Inc. | 512 | 17 | 4 |
| AS10595US | MAUSWERKS - Mauswerks, LLC. | 512 | 4.1K | 3 |
| AS20188US | GMU1325 - Gwynedd Mercy College | 512 | — | 2 |
| AS36054US | GLG-AS---GERSON-LEHRMAN-GROUP - Gerson Lehrman Group, Inc. | 512 | — | 2 |
| AS7448US | CHOICE-HOTELS - Choice Hotels International, Inc. | 512 | — | 2 |
| AS54766US | DC-ASN-01 - Hilton Resorts Corporation | 512 | — | 2 |
| AS401441US | GOOSEWORKS - Gooseworks LLC | 512 | 4.1K | 2 |
| AS399295US | STC-01 - Somerset Trust Company | 512 | — | 2 |
| AS395698US | BCBSKS - Blue Cross Blue Shield of Kansas, Inc. | 512 | — | 2 |
| AS201445US | Zerval-Network Zerval Network LLC | 512 | 277 | 9 |
| AS401763US | BLUEPULSENETWORKSLLC - Blue Pulse Networks LLC | 512 | 4.1K | 3 |
| AS394912US | ALL-IN-1 - Act 1 Group, Inc. | 512 | — | 2 |
| AS25699US | WILSONART-INTL - Wilsonart International | 512 | — | 2 |
| AS33377US | FHLBC - Federal Home Loan Bank of Chicago | 512 | — | 2 |
| AS25806US | RALEYNET - Raley's | 512 | — | 2 |
| AS54391US | CRUTCHFIELD - Crutchfield New Media LLC | 512 | 2 | 4 |
| AS22385US | JMS-ASN - Janney Montgomery Scott, LLC | 512 | — | 2 |
| AS396109US | YOKO-NETWORKS - Yoko Networks Inc. | 512 | 4.1K | 3 |
| AS401587US | TEXTNOW-CUST-01 - TextNow Inc. | 512 | 514 | 6 |
| AS20286US | AMER-COLLEGE-OF-CARDIOLOGY-WASHINGTONDC - American College of Cardiology | 512 | — | 2 |
| AS396204US | C1-BGP - CONVERGEONE HOLDINGS, INC. | 512 | — | 2 |
| AS30483US | TEXAS-GAS-TRANSMISSION - TEXAS GAS TRANSMISSION, LLC | 512 | — | 2 |
| AS36578US | WISN-TV - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS46879US | NCTCOG-911-ESINET-AS - North Central Texas Council of Governments | 512 | — | 2 |
| AS39978US | REED-SMITH-ASN - REED SMITH LLP | 512 | — | 2 |
| AS14293US | UNI-EDGE - UniEdge Networks LLC | 512 | — | 2 |
| AS397690US | USTX04 - 1A Smart Start LLC | 512 | 1 | 3 |
| AS401462US | SUBARU-SIA - Subaru of Indiana Automotive, Inc. | 512 | — | 1 |
| AS396326US | ASN-WATCO-IPV4-DC - Watco Companies, LLC. | 512 | — | 2 |