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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
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 | 24,543 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,304 |
| 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.
32,174 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 | 3,884 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,999 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,345 |
| 256 |
| — |
| 1 |
| AS394604US | XBHS-AS1 - Xaverian Brothers High School | 256 | — | 1 |
| AS14747US | LEE-COUNTY-CC - Lee County Clerk of Courts | 256 | — | 1 |
| AS401815US | SILIS - Silis LLC | 256 | 20 | 6 |
| AS46291US | LODCO - LOD Communications, Inc. | 256 | — | 1 |
| AS40453US | GRESHAM-NET - City of Gresham | 256 | — | 1 |
| AS11832US | AS-BANDBCOCO - Bridge & Byte Consulting Co. | 256 | 3 | 4 |
| AS395619US | THE-COLLEGE-OF-THE-FLORIDA-KEYS - The College of Florida Keys | 256 | — | 1 |
| AS16867US | BANDWIDTH-CORP - Bandwidth Inc. | 256 | 256 | 2 |
| AS398183US | CAROLINA-AUTO-AUCTION - CAROLINA AUTO AUCTION, INC. | 256 | — | 1 |
| AS394875US | FASTTECH - Fast Technologies Inc. | 256 | — | 1 |
| AS393794US | BRADLEY - Bradley Arant Boult Cummings, LLP | 256 | — | 1 |
| AS400853US | KEYSOURCE-ASNKAL58 - KeySource Acquisition, LLC | 256 | — | 1 |
| AS22345US | SOLIX-INC - Solix, Inc. | 256 | — | 1 |
| AS47393US | GROUPM WPP Group USA, Inc. | 256 | — | 1 |
| AS13374US | DYC-DYU - D'Youville College | 256 | — | 1 |
| AS26093US | HAR - Houston Association of Realtors | 256 | — | 1 |
| AS53639US | VNB-WAYNE - Valley National Bank | 256 | — | 1 |
| AS394631US | SHS-NET-1 - SAMARITAN HEALTH SERVICES | 256 | — | 1 |
| AS13985US | NASCO - NASCO | 256 | — | 1 |
| AS396024US | NORTHWESTMLS - Northwest Multiple Listing Service | 256 | 1 | 2 |
| AS11600US | PARALLAX - Parallax Services LLC | 256 | 1 | 2 |
| AS14997US | ASCENSION-TEXAS - Ascension Technologies | 256 | — | 1 |
| AS402568US | AVERSON-IT - Averson | 256 | 256 | 2 |
| AS395905US | SANDRIDGE - Sandridge Food Corporation | 256 | — | 1 |
| AS54970US | NORTHERN-AIR-CARGO - NORTHERN AIR CARGO | 256 | — | 1 |
| AS399299US | STEARNSBANK-AS-01 - Stearns Financial Services, Inc | 256 | — | 1 |
| AS402473US | RURALNET - Ruralnet | 256 | — | 1 |
| AS214806US | FEMBOY Femboy Cyber Networks LLC | 256 | 1 | 2 |
| AS46166US | SRSU - Sul Ross State University | 256 | — | 1 |
| AS14625US | PGA-TOUR - PGA Tour | 256 | — | 1 |
| AS19802US | LANEPRESS - The Lane Press, Inc. | 256 | — | 1 |
| AS16745US | ADVANCED-RADIOLOGY-CONSULTANTS-LLC - Advanced Radiology Consultants, LLC | 256 | — | 1 |
| AS400219US | COMMUNITYLTE - Local Pro | 256 | — | 1 |
| AS26555US | AVMLP - AVM,LP | 256 | — | 1 |
| AS402738US | CODAPT - CODAPT | 256 | — | 1 |
| AS397510US | CPI - Consumers Power, Inc. | 256 | — | 1 |
| AS399365US | KIRKLAND-ELLIS-DA - Kirkland & Ellis LLP | 256 | — | 1 |
| AS26882US | RIPPLE-BROADBAND - Ripple Broadband, LLC | 256 | 65.5K | 2 |
| AS63193US | AHS - Atlanticare Health System Inc. | 256 | — | 1 |
| AS55241US | XTRACTS - Xtracts, LLC | 256 | — | 1 |
| AS397045US | DBMGMT-AS1 - D. Brown Management | 256 | 16 | 2 |
| AS393267US | ATCC - American Type Culture Collection | 256 | — | 1 |
| AS395274US | LAKE-TRAVIS-ISD - Lake Travis ISD | 256 | — | 1 |
| AS393452US | FSST - Flandreau Santee Sioux Tribe | 256 | — | 1 |
| AS46214US | LEFRED - Lefleur Transportation of Tupelo, Inc. | 256 | — | 1 |
| AS398031US | JOSCOR-OE-1 - Joscor LLC | 256 | 1 | 2 |