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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 | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218.1M | 24,635 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,306 |
| 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.
32,220 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 233 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,003 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,360 |
| 256 |
| — |
| 1 |
| AS395412US | VS-MEDIA-IPV4 - VS Media Inc. | 256 | — | 1 |
| AS23540US | CMH-IX - CMH-IX | 256 | — | 1 |
| AS396380US | AS-ACCESSLA - ACCESS SERVICES | 256 | — | 1 |
| AS394186US | SE-BRANDS-01 - Self Esteem Brands, LLC | 256 | 4 | 2 |
| AS394382US | EL-DALLAS - Elevated Computing LLC | 256 | — | 1 |
| AS395284US | SHENKMANCAPITAL - Shenkman Capital Management, Inc. | 256 | — | 1 |
| AS19104US | MHSC-01 - Memorial Hospital of Sweetwater County Foundation | 256 | — | 1 |
| AS400134US | BON-ASN-01 - Balance of Nature | 256 | — | 1 |
| AS54537US | STOCKMAN-BANK-19 - Stockman Bank of Montana | 256 | — | 1 |
| AS30558US | LINCOLNELECTRIC - The Lincoln Electric Company | 256 | — | 1 |
| AS395618US | QUEENS-HEALTH-SYSTEM - The Queen's Medical Center | 256 | — | 1 |
| AS40109US | FORSYTH-K12-GA-US - Forsyth County Board of Education | 256 | — | 1 |
| AS397571US | PLEXUSSYSTEMS-DV - ROCKWELL AUTOMATION Inc. | 256 | — | 1 |
| AS36855US | LDI-ASN-01 - Louisiana Department of Insurance | 256 | — | 1 |
| AS22763US | BGP-DUCKS-INC - DUCKS UNLIMITED, INC. | 256 | — | 1 |
| AS393995US | PFFCUGW - Police and Fire Federal Credit Union | 256 | — | 1 |
| AS32585US | KSCM-AS - King Street Capital Management, L.P. | 256 | — | 1 |
| AS399860US | CRSCHOOLS-1 - CEDAR RAPIDS COMMUNITY SCHOOL DISTRICT | 256 | — | 1 |
| AS22668US | SPARTA-COMMUNITY-HOSPITAL - Sparta Community Hospital | 256 | — | 1 |
| AS40094US | SOUTHCENTRAL-FOUNDATION-01 - Southcentral Foundation | 256 | — | 1 |
| AS398372US | MINETWORKS - MINetworks, Inc. | 256 | — | 1 |
| AS395835US | AJA-ASN - AJ Antunes & Co | 256 | — | 1 |
| AS26830US | ASN-OPERS - OPERS | 256 | 1 | 2 |
| AS46665US | ASM - Applied Statistics & Management, Inc. | 256 | — | 1 |
| AS402090US | DANIEL - 10990 W. Highlander Rd. LLC | 256 | — | 1 |
| AS53900US | ORBIMED - OrbiMed Advisors, LLC | 256 | — | 1 |
| AS29855US | SGCORP29855 - Scientific Games, LLC | 256 | — | 1 |
| AS398443US | NWCC - Northwest Mississippi Community College | 256 | — | 1 |
| AS14766US | UKMAGDIA-BT-LUM - Magnetar Capital LLC | 256 | 1 | 2 |
| AS21986US | WPP-ET-CAMPUS-WASHINGTONDC - Young & Rubicam LLC | 256 | — | 1 |
| AS25633US | DATAMATX-ATL - DATAMATX INC | 256 | — | 1 |
| AS396192US | SJTA - South Jersey Transportation Authority | 256 | — | 1 |
| AS1315US | IPFS - Imperial PFS | 256 | — | 1 |
| AS46733US | X6CNET - x6c | 256 | 7 | 8 |
| AS33693US | AS-TIERP-33693 - TierPoint, LLC | 256 | — | 1 |
| AS55207US | IGLOO - June Slater | 256 | 2 | 3 |
| AS401114US | COLUMBIACOUNTYWI - Columbia County | 256 | — | 1 |
| AS46287US | SML-ASN - Stonehenge Management, LLC | 256 | — | 1 |
| AS949US | XTOM - xTom | 256 | 256 | 2 |
| AS16770US | ASTGEN - Astoria Generating Company, L.P. | 256 | — | 1 |
| AS33493US | HUDSON-VALLEY-FEDERAL-CREDIT-UNION - Hudson Valley Federal Credit Union | 256 | — | 1 |
| AS399810US | LAER-AS-AMS1 - UnitedLayer, LLC | 256 | 1 | 2 |
| AS18893US | SELECT-EQUITY - Select Equity Group, Inc. | 256 | — | 1 |
| AS396148US | DADDARIO - D'Addario & Company Inc. | 256 | — | 1 |
| AS400027US | ECH-01 - Earlychildhood LLC | 256 | — | 1 |
| AS14531US | LM-ATL - Lockheed Martin Corporation | 256 | — | 1 |