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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 | 24,645 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 643 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,307 |
| 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.
32,220 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 | 3,890 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,006 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,364 |
| 256 |
| — |
| 1 |
| AS402984US | GEORGE - GeorgeteVelde | 256 | — | 1 |
| AS397947US | SAINT-LUKES-HOSPITAL-CHESTERFIELD - St. Luke's Hospital | 256 | — | 1 |
| AS26018US | QAWOLF-ASN-01 - QA WOLF, INC. | 256 | — | 1 |
| AS23398US | DZSI - Dasan Zhone Solutions, Inc. | 256 | — | 1 |
| AS33128US | APOG-TOW - Apogee Telecom Inc. | 256 | — | 1 |
| AS46993US | SABA-CAPITAL-MANAGEMENT - Saba Capital Management, L.P. | 256 | — | 1 |
| AS401293US | AS401293 - FSTcloud | 256 | 5.2M | 11 |
| AS19135US | FRHS-ORG-ASN - FAITH REGIONAL HEALTH SERVICES | 256 | — | 1 |
| AS400299US | DIGITALPREZ-LLC - DigitalPrez Consulting | 256 | — | 1 |
| AS16571US | KDMC1 - Kings Daughters Medical Center | 256 | — | 1 |
| AS29403US | VERISIGN-AS VeriSign Inc. | 256 | — | 1 |
| AS402195US | MGH-MDF-01 - Marion General Hospital, Inc. | 256 | — | 1 |
| AS16741US | CITY-OF-LAKELAND - City Of Lakeland | 256 | — | 1 |
| AS60808US | AP-2440-60808 - Anthropic, | 256 | — | 1 |
| AS398548US | MCDUSASN02 - McDonald's Corporation | 256 | — | 1 |
| AS40848US | FMFCU - Franklin Mint FCU | 256 | — | 1 |
| AS393868US | VALLEY-PRESBYTERIAN-HOSPITAL - VPH | 256 | — | 1 |
| AS393409US | HELLOSPOKE - Voitress | 256 | — | 1 |
| AS402600US | UN9 - UN9 | 256 | 1 | 2 |
| AS395666US | ISG-01 - Infinity Sales Group, LLC | 256 | — | 1 |
| AS63038US | DELIBRARY - Delaware Division of Libraries, State of Delaware | 256 | — | 1 |
| AS19352US | NACHA-HQ - NACHA The Electronic Payments Association | 256 | — | 1 |
| AS62636US | ISD273-1 - Edina Public Schools | 256 | — | 1 |
| AS139682US | APKSL-AS-AP - Arnold & Porter Kaye Scholer LLP | 256 | — | 1 |
| AS395062US | FIERY-LLC-AS - FIERY, LLC | 256 | — | 1 |
| AS32226US | MENARD-INC - Menard, Inc. | 256 | — | 1 |
| AS23502US | EXECPRO-AS - Execpro Information Services, LLC | 256 | — | 1 |
| AS46743US | PHILANDER-SMITH-UNIVERSITY-AS - Philander Smith University | 256 | — | 1 |
| AS19266US | TOTES-ISOTONER - Totes Isotoner Corporation | 256 | — | 1 |
| AS400093US | DCS-JACKSON-02 - Direct Customer Solutions, LLC | 256 | — | 1 |
| AS21966US | SUNBELTRENTALS - Sunbelt Rentals | 256 | — | 1 |
| AS396488US | PHYSICIANSMUTUAL-ASN-1 - Physicians Mutual Insurance Company | 256 | — | 1 |
| AS53978US | ACUMED - Acumed, LLC | 256 | — | 1 |
| AS32175US | RTD-DENVER - REGIONAL TRANSPORTATION DISTRICT | 256 | — | 1 |
| AS13850US | FRACTALCORE - FractalCore LLC | 256 | — | 1 |
| AS17271US | SPSCOMMERCE - SPS Commerce, Inc. | 256 | — | 1 |
| AS11322US | TRMC-MAIN-CAMPUS - Thibodaux Regional Medical Center | 256 | — | 1 |
| AS22743US | AS22743 - Corelogic Solutions, LLC | 256 | — | 1 |
| AS40958US | KJ6FAF-LUHR-01 - Milpa Nativa Inc. | 256 | — | 1 |
| AS393841US | EPIC-HOSTING-1 - Epic Hosting, LLC | 256 | — | 1 |
| AS3730US | AQUINA-001 - Aquinas College | 256 | — | 1 |
| AS26164US | SWK-HOSTING1 - SWK | 256 | — | 1 |
| AS394115US | SRALAB-AS - Rehabilitation Institute of Chicago | 256 | — | 1 |
| AS25991US | BENDIXCVS - Bendix Commerical Vehicle Systems | 256 | — | 1 |
| AS29936US | THD-TMC-8750 - Telluride Medical Center | 256 | — | 1 |
| AS19048US | PEERLESS-PRODUCTS - PEERLESS PRODUCTS, INC. | 256 | — | 1 |