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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 | 24,540 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,305 |
| 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.
32,187 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 | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,362 |
| 256 |
| — |
| 1 |
| AS398183US | CAROLINA-AUTO-AUCTION - CAROLINA AUTO AUCTION, INC. | 256 | — | 1 |
| AS40381US | AS-ADM-DC2 - ADM | 256 | — | 1 |
| AS402378US | HCHB-PUBLIC - HomeCare | 256 | — | 1 |
| AS394952US | LMCU-ASN-01 - Lake Michigan Credit Union | 256 | — | 1 |
| AS397459US | UPPER-ST-CLAIR-SCHOOL-DISTRICT - Upper St. Clair School District | 256 | — | 1 |
| AS19722US | NFTA - Niagara Frontier Transportation Authority | 256 | — | 1 |
| AS13976US | TOPOCEAN-LAX1 - Topocean Consolidation Service (Los Angeles), Inc. | 256 | — | 1 |
| AS32643US | RDI - RESOURCE DATA, INC. | 256 | — | 1 |
| AS54857US | TQS-PDX-INTERNET - Qorvo US, Inc | 256 | — | 1 |
| AS40599US | GENTEXCORPORATION - Gentex Corporation | 256 | — | 1 |
| AS3627US | NRAO-AS - National Radio Astronomy Observatory | 256 | — | 1 |
| AS6092US | HARFORDCC-AS - Harford Community College | 256 | — | 1 |
| AS2909US | CITI2 - Citigroup Inc. | 256 | — | 1 |
| AS394119US | EXPERIMENTAL-COMPUTING-FACILITY - eXperimental Computing Facility Foundation | 256 | 4.1K | 3 |
| AS397123US | WSB-TV - Cox Media Group, LLC | 256 | — | 1 |
| AS22339US | UDBQ-1 - University of Dubuque | 256 | 258 | 4 |
| AS215520US | JOSH-BOYD JOSHUA BOYD | 256 | 1 | 2 |
| AS22455US | ESL-FCU - ESL Federal Credit Union | 256 | — | 1 |
| AS35918US | FCE-ASN - Forest City Enterprises, Inc. | 256 | — | 1 |
| AS40194US | MARINEBIO - MBL | 256 | — | 1 |
| AS35880US | WFC-CISD-INET - Wakefern Food Corp. | 256 | — | 1 |
| AS36603US | ARC-INTERNET - AIRLINES REPORTING CORPORATION | 256 | — | 1 |
| AS397703US | APOG-GRAMBLING - Apogee Telecom Inc. | 256 | — | 1 |
| AS25879US | UPHSM-ASN-01 - UP Health System - Marquette | 256 | — | 1 |
| AS393830US | MAINE-MUNICIPAL-ASSOCIATION - Maine Municipal Association | 256 | — | 1 |
| AS398751US | SMCC-ASN-01 - Southwest Mississippi Community College | 256 | — | 1 |
| AS394095US | LUCASMUSEUM-BGP-2024 - Lucas Museum of Narrative Art | 256 | — | 1 |
| AS14681US | JAYCO - Jayco, Inc | 256 | — | 1 |
| AS33435US | CITYOFSPRINGFIELDMA - City of Springfield, Massachusetts | 256 | — | 1 |
| AS63464US | SUNSASN - THE PHOENIX SUNS | 256 | — | 1 |
| AS21702US | HADDAD - The Haddad Organization Ltd. | 256 | — | 1 |
| AS32170US | SLVRMC - San Luis Valley Regional Medical Center | 256 | 1 | 2 |
| AS16393US | BARRYU-AS - Barry University | 256 | — | 1 |
| AS53532US | CINNAMINSON-SCHOOLS - The Board of Education of the Township of Cinnaminson | 256 | — | 1 |
| AS32774US | NGK-SPARKPLUGS-USA - NGK Sparkplugs USA | 256 | — | 1 |
| AS46217US | BOLD-MSUMANKATO - Apogee Telecom Inc. | 256 | — | 1 |
| AS395646US | NEUTRAL-NETWORKS - Neutral Networks | 256 | 65.5K | 2 |
| AS397587US | DATAXPORT-ELP - DataXport.Net, LLC | 256 | — | 1 |
| AS19859US | FLAIR-DATA-SYSTEMS - Flair Data Systems | 256 | — | 1 |
| AS32209US | MOMENTUM-ACCESS-EU - Momentum Telecom, Inc. | 256 | — | 1 |
| AS46425US | SVMH-AS - Salinas Valley Memorial Hospital | 256 | — | 1 |
| AS402809US | GUMMIPANTZEN - Gummipantzen | 256 | 65.5K | 2 |
| AS18507US | NYMEX-EXTRANET - NEW YORK MERCANTILE EXCHANGE | 256 | — | 1 |
| AS16661US | INFOSECEDU - Hack This LLC | 256 | 256 | 2 |
| AS26763US | DART-DALLAS - Dallas Area Rapid Transit (DART) | 256 | — | 1 |
| AS15268US | MDARCHIVES - Maryland State Archives | 256 | — | 1 |