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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 | 24,555 |
| 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 |
| 232 |
| 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 | 1,995 |
| AS701US | UUNET - Verizon Business | 43.6M | 994 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,354 |
| 512 |
| — |
| 2 |
| AS13405US | FEATHER-IT-NET - Feather IT LLC | 512 | 256 | 3 |
| AS17338US | UNITAS-AOS - Unitas Global | 512 | — | 2 |
| AS395441US | EDGECONNEX-ASN - EdgeConneX, INC | 512 | — | 2 |
| AS401729US | CS-ASN1 - CrossSignal, LLC | 512 | — | 2 |
| AS33016US | SMFE-BB - Payward, Inc. | 512 | — | 2 |
| AS32236US | TRANSCOM-BGP-01 - TRANSCOM | 512 | — | 2 |
| AS402003US | EZGAMEHOST-NET-1 - EZ Game Host, LLC | 512 | 256 | 3 |
| AS53521US | CDS-200 - Complete Discovery Source | 512 | — | 2 |
| AS62557US | AUSTALUSA - Austal USA LLC | 512 | — | 2 |
| AS53485US | LON-NIDR - PIMCO | 512 | — | 2 |
| AS397975US | BRITEFISH-01 - Realnets | 512 | — | 2 |
| AS397430US | KANE-COUNTY-GOV - County of Kane | 512 | — | 1 |
| AS47039US | NGLI-11-47039 - National Guardian Life Insurance Company | 512 | — | 2 |
| AS394801US | SFA-ARDC - Stephen F. Austin State University | 512 | — | 1 |
| AS26511US | AACT-INTERNET - AAA Cooper Transportation, Inc. | 512 | — | 2 |
| AS397302US | NEDERLANDER-WEST-COAST - J. Ned, Inc. | 512 | — | 2 |
| AS36309US | LG-NET - LOUIS GLICK INTERNATIONAL LTD. | 512 | — | 2 |
| AS399988US | ENC-HOLDING-ASN - ENC Holding Corporation | 512 | — | 2 |
| AS395203US | SCHOOLCRAFTDEVELOPMENTAUTHORITY - Schoolcraft Development Authority, Inc | 512 | — | 1 |
| AS213684US | Azalea Azalea Systems LLC | 512 | — | 2 |
| AS401262US | TREDYFFRIN-EASTTOWN-SD - Tredyffrin/Easttown School District | 512 | — | 2 |
| AS30116US | WNI-NORMAN - WEATHERNEWS AMERICA INC. | 512 | — | 2 |
| AS23397US | CME-VEN-AS23397 - Chicago Board of Trade | 512 | — | 2 |
| AS53851US | PAMPEREDCHEF - The Pampered Chef, Ltd. | 512 | — | 2 |
| AS63167US | TGNA-KING-KONG - TEGNA Inc. | 512 | — | 2 |
| AS31894US | STARCOMWI - Star Communications LLC | 512 | — | 2 |
| AS19511US | ELECTROLUX-NA - Electrolux Home Products, Inc. | 512 | — | 2 |
| AS15349US | AS-NJ1-DIA - Guggenheim Services LLC | 512 | — | 2 |
| AS398097US | WINTRUST-FINANCIAL-CORPORATION-EG-IL - Wintrust Financial Corporation | 512 | — | 2 |
| AS395105US | JDAWI2 - Blue Yonder, Inc | 512 | — | 2 |
| AS29884US | EQUINIX-EC-DA - Equinix, Inc. | 512 | 1 | 3 |
| AS53393US | LGCNS-AS2 - LG CNS America Inc. | 512 | — | 2 |
| AS35901US | AVTEX-INC-ASN - Avtex, Inc. | 512 | — | 2 |
| AS36074US | 3330-TMMC - Torrance Memorial Medical Center | 512 | — | 2 |
| AS203990US | acc_eu Accertify LLC | 512 | — | 2 |
| AS398002US | TGNA-WQAD - TEGNA Inc. | 512 | — | 2 |
| AS395971US | QUESTSOFTWARE - Quest Software Inc | 512 | — | 2 |
| AS396933US | TELWARE-EAST01 - TelWare Corporation | 512 | — | 2 |
| AS53533US | ENTRA-3 - Entravision Communications Corporation | 512 | — | 2 |
| AS12053US | TRUMARK-FINANCIAL - TruMark Financial Credit Union | 512 | — | 2 |
| AS399687US | DEFIN-AS - Def, Inc | 512 | — | 2 |
| AS10764US | STARTAP - University of Illinois | 512 | — | 1 |
| AS19514US | MAGTEK-HQ - MagTek Inc. | 512 | — | 1 |
| AS394813US | KRRBI - Karuk Tribe | 512 | — | 1 |
| AS397472US | US-NEW-ERA - US NEW ERA INTERNET CORP | 512 | 7 | 9 |
| AS398204US | CITY-OF-STOCKTON - City of Stockton | 512 | — | 2 |