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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. | 218M | 24,346 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,303 |
| 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.
32,168 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 | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,996 |
| AS701US | UUNET - Verizon Business | 43.6M | 994 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| CITY-OF-COVINGTON-GA - City Of Covington, Georgia |
| 512 |
| — |
| 1 |
| AS14149US | ICONFITNESS-MAIN - Icon Health & Fitness Inc | 512 | — | 2 |
| AS399687US | DEFIN-AS - Def, Inc | 512 | — | 2 |
| AS26276US | TIMKEN-USA - The Timken Company | 512 | — | 2 |
| AS13744US | THP-BGP - TYNDALE HOUSE PUBLISHERS | 512 | — | 2 |
| AS26761US | CMAL-ECOM - Designs Apparel, Inc. | 512 | — | 2 |
| AS15718US | FL-749-15718 - FROSTWEB LLC | 512 | — | 2 |
| AS12238US | AECOM - AECOM | 512 | — | 1 |
| AS36074US | 3330-TMMC - Torrance Memorial Medical Center | 512 | — | 2 |
| AS53869US | KRYPTIQ - Surescripts, LLC | 512 | — | 1 |
| AS17278US | IONACOLLEGE - Iona University | 512 | — | 2 |
| AS397892US | REXELUSA - Rexel | 512 | — | 2 |
| AS2633US | NAS1-AS - National Academy of Sciences | 512 | — | 2 |
| AS394736US | DAYZIM - The Day & Zimmermann Group, Inc. | 512 | — | 2 |
| AS39983US | PBGC-HQ-AS - Pension Benefit Guaranty Corp. | 512 | — | 2 |
| AS46640US | NWNCOMM - NWN Corporation | 512 | — | 2 |
| AS22179US | LTS-CO01 - Links Technology Solutions, Inc. | 512 | — | 2 |
| AS18746US | MIG-BGP - Merchants Insurance Group | 512 | — | 2 |
| AS397600US | BANKOZK-DALLAS - Bank OZK | 512 | — | 2 |
| AS53485US | LON-NIDR - PIMCO | 512 | — | 2 |
| AS394066US | CTC-AS1 - The Chugwater Telephone Company | 512 | — | 2 |
| AS393914US | INVITAE-01 - Invitae Corp | 512 | — | 2 |
| AS394950US | COLLECTIVE-HEALTH - CollectiveHealth, Inc. | 512 | — | 2 |
| AS55179US | MMA - The Metropolitan Museum of Art | 512 | — | 1 |
| AS13405US | FEATHER-IT-NET - Feather IT LLC | 512 | 256 | 3 |
| AS54268US | CAPITALHEALTH - Capital Health System, Inc | 512 | — | 2 |
| AS22471US | MOTEMARINELAB - Mote Marine Laboratory | 512 | — | 1 |
| AS12184US | FORRESTER-RESEARCH - Forrester Research | 512 | — | 2 |
| AS40534US | AM-AVK-MINDEN - American AVK Company | 512 | — | 2 |
| AS16680US | IRONBOW - Iron Bow Technologies, LLC | 512 | — | 2 |
| AS3592US | TRINCOLL-AS - Trinity College | 512 | — | 2 |
| AS26511US | AACT-INTERNET - AAA Cooper Transportation, Inc. | 512 | — | 2 |
| AS30390US | IMERYS-UK-PARMOOR-ASNUMBER - Imerys Pigments | 512 | — | 2 |
| AS11035US | KCPA1 - The Raymond F. Kravis Center for the Performing Arts, Inc. | 512 | — | 1 |
| AS30116US | WNI-NORMAN - WEATHERNEWS AMERICA INC. | 512 | — | 2 |
| AS400419US | CNEHS - CARE NEW ENGLAND HEALTH SYSTEM | 512 | — | 2 |
| AS394158US | ONCU-M - ONE NEVADA CREDIT UNION | 512 | — | 2 |
| AS54554US | TIG-AS - Turner Industries Group, LLC. | 512 | — | 2 |
| AS393625US | FNS-ASN - OPTIV SECURITY INC | 512 | — | 2 |
| AS399574US | RCCD-ASN - Riverside Community College District | 512 | — | 1 |
| AS29994US | MR-MAHLE - Mark Mahle, LLC | 512 | 17 | 4 |
| AS36565US | COUNTY-OF-MONTGOMERY-PA - County of Montgomery | 512 | — | 2 |
| AS206628US | EzriCloud Tianyu-Zhu | 512 | 4 | 6 |
| AS23525US | CNC-CNB - Canandaigua National Corporation | 512 | — | 2 |
| AS36214US | GENERAL-INFORMATICS - General Informatics, LLC | 512 | — | 2 |
| AS400306US | PHEAA-141200 - PHEAA, AES, FedLoan Servicing | 512 | — | 2 |
| AS13554US | TPS-TX-AS - Tenaska Power Services, Co. | 512 | — | 2 |