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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 | 24,389 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,302 |
| 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.
32,169 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 | 4,341 |
| 1K |
| — |
| 1 |
| AS2933US | NETNODE - Real/Time Communications | 1K | — | 1 |
| AS14893US | CHS-MI - Covenant Medical Center, Inc. | 1K | — | 1 |
| AS32319US | AS-MARQETA - Marqeta, Inc. | 1K | — | 4 |
| AS6515US | DACSNX-ISP - DACS-IX | 1K | 70 | 14 |
| AS1605US | ALGT-HQNET - Allegiant Travel Company | 1K | — | 4 |
| AS40069US | AISNET - ASSURED INFORMATION SECURITY, INC. | 1K | 17 | 5 |
| AS21937US | EEL-LTL - Estes Express Lines | 1K | — | 4 |
| AS14583US | VITA-VSP-1 - Virginia Information Technologies Agency (VITA) | 1K | — | 2 |
| AS399055US | SOUTHEAST-NETWORKS - Southeast Networks | 1K | 65.5K | 5 |
| AS32509US | SEDGWICK-COUNTY-AS - Sedgwick County Information Services | 1K | — | 1 |
| AS400008US | ZOOT - Zoot Enterprises, Inc. | 1K | — | 4 |
| AS1614US | ISLLC-AS-01 - IOWA STUDENT LOAN LIQUIDITY CORP. | 1K | — | 4 |
| AS13532US | NEED-TO-KNOW-NEWS - Need To Know News, LLC | 1K | — | 1 |
| AS401526US | AIRPLEXUS - Airplexus, Inc. | 1K | — | 1 |
| AS64247US | UW-RESEARCH - University of Washington | 1K | — | 1 |
| AS400678US | IPV4 - LIDL US OPERATIONS, LLC | 1K | — | 3 |
| AS202292US | Dodecagon Dodecagon ST LLC | 1K | 524.3K | 3 |
| AS53687US | DNI-AS - DataComm Networks Inc. | 1K | — | 4 |
| AS55277US | PINAL-AS - Pinal County Arizona | 1K | — | 1 |
| AS1236US | GDIT-AS2 - General Dynamics Information Technology, Inc. | 1K | — | 4 |
| AS62663US | TELECALL - Telecall | 1K | 4.1K | 4 |
| AS2567US | SLB-WESTERNGECO-AS - Schlumberger Limited | 1K | — | 4 |
| AS18546US | ACN-NADC - Accenture LLP | 1K | — | 4 |
| AS401458US | IQVIA-DURHAM-6B - IQVIA Holdings Inc | 1K | — | 1 |
| AS138947US | NTC-AS-APC - NORTHERN TRUST CORPORATION | 1K | — | 3 |
| AS36061US | WATERLOO-01 - Waterloo Fiber | 1K | 4.1K | 2 |
| AS23083US | IRONCORE-LAX - Ironcore, Inc. | 1K | — | 3 |
| AS23494US | HSC - Blue Cross Blue Shield of Illinois or Blue Cross Blue Shield of Texas | 1K | — | 4 |
| AS16861US | REVELEX - Revelex.com | 1K | — | 1 |
| AS29934US | NETACOM - Netadyne Networks, Inc. | 1K | — | 3 |
| AS40417US | INTERACTIONSCORP - Interactions Corporation | 1K | 2 | 6 |
| AS46083US | MCCARHTY-BURGESS-WOLFF - McCarthy, Burgess & Wolff, Inc. | 1K | — | 1 |
| AS13836US | ASN-13836 - Nasdaq, Inc. | 1K | — | 3 |
| AS400496US | AMERICANFIBERNET - American Fiber Network, Inc. | 1K | 69.6K | 6 |
| AS15092US | STAR2STAR - Sangoma US Inc. | 1K | 2 | 6 |
| AS18820US | SARGENTO-AS-0 - Sargento Foods, Inc. | 1K | — | 3 |
| AS26409US | LUCID-ASN - Lucid USA, Inc. | 1K | — | 3 |
| AS53675US | HWB-ASN-53675 - Hancock Whitney Bank | 1K | — | 4 |
| AS398748US | ONECORP-USA - oneCorp USA, Inc. | 1K | 65.5K | 5 |
| AS399868US | SNAPCOM - Snapcom | 1K | 5 | 9 |
| AS13401US | STARWOOD-HOTELS - Marriott International, Inc. | 1K | — | 1 |
| AS23262US | IWANINC-US - IWAN INC. | 1K | — | 2 |
| AS21666US | OSF-ASN-01 - OSF Healthcare System | 1K | — | 4 |
| AS40640US | CAYUSEHOLDINGS-PEN-01 - CAYUSE TECHNOLOGIES LLC | 1K | — | 1 |
| AS22851US | NSU-SD - Northern State University | 1K | — | 4 |
| AS399362US | SHIFT4-CORP - SHIFT4 PAYMENTS, LLC | 1K | — | 3 |