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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 |
| 512 |
| — |
| 2 |
| AS32192US | EMPRISEBANK - EMPRISE BANK | 512 | — | 1 |
| AS394498US | YMCA-OF-THE-NORTH - YMCA of the North | 512 | 1 | 3 |
| AS32606US | MARCUS-CORP - The Marcus Corporation | 512 | — | 2 |
| AS12209US | GIROSOL - Girosol, Corp. | 512 | — | 2 |
| AS394528US | TRUWEST-CREDIT-UNION - Truwest Credit Union | 512 | — | 2 |
| AS395433US | D214 - Township High School District 214 | 512 | — | 2 |
| AS889US | DVFIBER-VT - Deerfield Valley Communications Union District | 512 | 65.5K | 2 |
| AS22751US | MOTHIC-INFINET - Mothic Technologies LLC | 512 | 4.1K | 3 |
| AS20143US | SUNET-1 - Suffolk University | 512 | — | 2 |
| AS400045US | DUMONT-TELEPHONE-COMPANY - Dumont Telephone Company | 512 | 256 | 3 |
| AS393864US | PRESTIGE-BROADBAND - Prestige Broadband LLC | 512 | — | 2 |
| AS396023US | DEMO-TEWKS - Demoulas Super Markets, Inc. | 512 | — | 2 |
| AS16642US | WPP-ET-CAMPUS-ZURICH - The Ogilvy Group, LLC | 512 | — | 1 |
| AS36807US | SAINTFRANCIS-TULSA - Saint Francis Health System | 512 | — | 1 |
| AS11235US | ITRONHOSTINGAS - Itron-Hosting | 512 | — | 2 |
| AS33014US | MARLINLEASING - MARLIN LEASING CORPORATION | 512 | 1 | 3 |
| AS394805US | RELIAQUEST - ReliaQuest, LLC | 512 | — | 2 |
| AS53846US | UNITI-FIBER-VOICE - Uniti Fiber Holdings Inc. | 512 | — | 2 |
| AS401462US | SUBARU-SIA - Subaru of Indiana Automotive, Inc. | 512 | — | 1 |
| AS16737US | STABLEHOST - Nerdie Networks LLC | 512 | — | 2 |
| AS1857US | DISN-PILOTNET3 - RTX BBN Technologies, Inc. | 512 | — | 2 |
| AS10905US | MTVI-AS - Mobile Technology Ventures Inc | 512 | — | 2 |
| AS401700US | JOY-LABS-VENTURES - Joy Labs Ventures LLC | 512 | — | 1 |
| AS7820US | TOWERFCU-AS - Tower Federal Credit Union | 512 | — | 2 |
| AS394427US | ZOICSTUDIOS - Zoic Studios | 512 | — | 2 |
| AS12259US | EBOCOM - EBOCOM LLC | 512 | 3 | 5 |
| AS402242US | NEVCOFIBER-AS - Nevada County Fiber Inc. | 512 | — | 1 |
| AS400349US | BOLD-HOWARDU - Apogee Telecom Inc. | 512 | — | 1 |
| AS14105US | NO - Secure IP | 512 | — | 2 |
| AS39990US | BCG - Boulder County Government | 512 | — | 2 |
| AS53489US | TGNA-WBIR - TEGNA Inc. | 512 | — | 2 |
| AS398419US | COLO-LOL - Tiny Tiny Computing | 512 | 4.1K | 3 |
| AS393787US | CEG - Citizens Energy Group | 512 | — | 2 |
| AS25699US | WILSONART-INTL - Wilsonart International | 512 | — | 2 |
| AS16996US | TARRANTCOUNTYTX-GOV - Tarrant County | 512 | — | 2 |
| AS396323US | JCFS - Johnson Controls Federal Systems Inc. | 512 | — | 2 |
| AS400480US | G12-CORE-ASN - Momentum Telecom, Inc. | 512 | — | 2 |
| AS54218US | BERENET - SYSTEM36 L.L.C. | 512 | 260 | 7 |
| AS32886US | NYC-INTERPUBLIC - THE INTERPUBLIC GROUP OF COMPANIES, INC. | 512 | — | 2 |
| AS393513US | AS-SYNAPT - Synaptics Incorporated | 512 | — | 2 |
| AS30489US | MKPCAP - MKP Capital Management, LLC | 512 | — | 2 |
| AS25758US | MEI - MIDWEST EXPRESS INC | 512 | — | 2 |
| AS401587US | TEXTNOW-CUST-01 - TextNow Inc. | 512 | 514 | 6 |
| AS402427US | NXST-AS402427 - Nexstar | 512 | — | 2 |
| AS53483US | RSP - ReSource Pro, LLC | 512 | — | 2 |
| AS21974US | FMIC - Frankenmuth Mutual Insurance Company | 512 | — | 2 |