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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 |
| AS54828US | SCENTSY01 - SCENTSY | 256 | — | 1 |
| AS63057US | AXINN - Axinn, Veltrop & Harkrider LLP | 256 | — | 1 |
| AS11574US | SFGNET-AS - San Francisco Baseball Associates LLC | 256 | — | 1 |
| AS398544US | SIMPLICITYTECH-NET01 - Simplicity Tech | 256 | — | 1 |
| AS63289US | ASN-MBCI - WFMZ-TV | 256 | — | 1 |
| AS46578US | AS46578 - Seer Capital Management, LP | 256 | — | 1 |
| AS399815US | LAER-AS-SYD1 - UnitedLayer, LLC | 256 | 1 | 2 |
| AS393482US | SMCISD-ASN - San Marcos Consolidated Independent School District | 256 | — | 1 |
| AS59678US | SYSTEM36 SYSTEM36 LLC | 256 | 67.6K | 5 |
| AS29819US | MIS124 - Natural Networks, Inc. | 256 | — | 1 |
| AS399985US | LL-DC - Pemco Mutual Insurance Company | 256 | — | 1 |
| AS394870US | ASSURITY - Assurity Group Inc | 256 | — | 1 |
| AS394090US | FCGH-AS - Forrest County General Hospital | 256 | — | 1 |
| AS394864US | PCO-AS - PC OPEN Incorporated | 256 | 1 | 2 |
| AS393390US | PRC-MAIN - Professional Research Consultants, Inc. | 256 | — | 1 |
| AS40492US | PACSEAFOOD - Pacific Seafood Group | 256 | — | 1 |
| AS29869US | DOTBLOCK-3 - HostRocket.com, Inc. | 256 | 256 | 2 |
| AS19776US | MIDPAC-ASN - Mid-Pacific Institute | 256 | — | 1 |
| AS54435US | THE-WESTMINSTER-SCHOOLS - The Westminster Schools, INC | 256 | — | 1 |
| AS29783US | AS29783 - Basswood Capital Management LLC | 256 | — | 1 |
| AS397141US | VIS-LLC-SC - VIS LLC | 256 | — | 1 |
| AS399824US | INFINITE-Q-NETWORKS - Infinite Q Networks | 256 | 4.1K | 2 |
| AS398410US | VIRTUWORKS - Virtuworks | 256 | — | 1 |
| AS397874US | LUCASFILM-VAN - Lucasfilm Ltd. LLC | 256 | — | 1 |
| AS400378US | BEAUMONT-CITY01 - City of Beaumont, TX | 256 | — | 1 |
| AS53899US | SERVICEHUB - ServiceHub Corporation | 256 | — | 1 |
| AS26502US | MOMEN-5-ASN - Momentum Telecom, Inc. | 256 | — | 1 |
| AS55054US | IPMEETIP - IPv4 Superhub Limited | 256 | — | 1 |
| AS401470US | UC-AGRICULTURE-AND-NATURAL-RESOURCES - The Regents of the University of California, Agriculture and Natural Resources | 256 | — | 1 |
| AS219082US | BOUGH Bough Limited | 256 | 3 | 4 |
| AS30554US | LEVY-LFS-NET - Levy Restaurants | 256 | — | 1 |
| AS400851US | SEPHORA-US-SF - Sephora USA Inc. | 256 | — | 1 |
| AS398359US | FNU-VERSAILLES - Frontier Nursing University | 256 | — | 1 |
| AS396957US | NDBH-ASNUMBER - New Directions Behavioral Health, LLC | 256 | — | 1 |
| AS27243US | SPOTEX-AS - Spotex | 256 | — | 1 |
| AS32784US | NEBR-ORTHO-HOSP - OrthoNebraska | 256 | — | 1 |
| AS401994US | BBOED-ASN1 - Bayonne Board of Education | 256 | — | 1 |
| AS402149US | WAN2 - WAN2 LLC | 256 | — | 1 |
| AS399026US | BEC-PRIMARYASN - Bowen Engineering Corporation | 256 | — | 1 |
| AS397737US | RLASD-ISP - Red Lion Area School District | 256 | — | 1 |
| AS22831US | SCG-ARIN - THE SCIENTIFIC CONSULTING GROUP, INC | 256 | — | 1 |
| AS17272US | ROTH-NET - ROTH CAPITAL PARTNERS, LLC | 256 | — | 1 |
| AS30185US | CITY-OF-ROCHESTER-NY - City of Rochester | 256 | — | 1 |
| AS63441US | AS63441 - Crown Castle Fiber LLC | 256 | — | 1 |
| AS46119US | MIDMICHIGANHEALTH-AS-1 - MidMichigan Health | 256 | — | 1 |
| AS23090US | PETCO-CH3 - Petco | 256 | — | 1 |