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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) | 227.7M | 3,139 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,149 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,243 |
| 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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 383 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,670 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,953 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,395 |
| 256 |
| — |
| 1 |
| AS397791US | PROASSURANCE - ProAssurance Corporation | 256 | — | 1 |
| AS394382US | EL-DALLAS - Elevated Computing LLC | 256 | — | 1 |
| AS400188US | UBSARENA - New York Arena Partners, LLC | 256 | — | 1 |
| AS18610US | SEQUOIA-AS - Sequoia Capital | 256 | — | 1 |
| AS13915US | RIA-AS - Radiology Imaging Associates P.C. | 256 | — | 1 |
| AS32106US | CHECKPOINT - Check Point Software Technologies, Inc. | 256 | — | 1 |
| AS398366US | LINKUP - Linkup Communications Corporation | 256 | — | 1 |
| AS33693US | AS-TIERP-33693 - TierPoint, LLC | 256 | — | 1 |
| AS27217US | ACN-2 - Jewelry Television | 256 | 3 | 3 |
| AS54245US | CITYOFDURANGO - City of Durango | 256 | — | 1 |
| AS30218US | ACE-002 - Ace Data Centers II, L.L.C. | 256 | — | 1 |
| AS26032US | TRPC7 - TEST RITE PRODUCTS CORP. | 256 | — | 1 |
| AS32118US | AS-SMARTHEALTH - Smart Practice | 256 | — | 1 |
| AS23153US | KENNAMETAL - Kennametal Inc. | 256 | — | 1 |
| AS399810US | LAER-AS-AMS1 - UnitedLayer, LLC | 256 | 1 | 2 |
| AS395939US | CCHWYO-AS395939 - Campbell County Health | 256 | — | 1 |
| AS18684US | WCM-ASN - Westfield Capital Management Company, LLC | 256 | — | 1 |
| AS55061US | IEX-MARKET-1 - IEX Group, Inc. | 256 | — | 1 |
| AS393254US | DTG-LAS-VEGAS-MANAGER - DTG Las Vegas Manager, LLC | 256 | — | 1 |
| AS22022US | HUB-GROUP - Hub Group, Inc. | 256 | — | 1 |
| AS25973US | AS-GTT-25973 - PacketExchange, Inc | 256 | 1 | 2 |
| AS401748US | ASRINFOPRO-LLC - ASR INFOPRO LLC | 256 | — | 1 |
| AS30629US | LCLARK - Lewis & Clark College | 256 | — | 1 |
| AS399539US | COTTAGE-HEALTH01 - Cottage Health | 256 | — | 1 |
| AS8079US | HTS - HIGH-Q TECHNICAL SOLUTIONS | 256 | 256 | 2 |
| AS892US | EBSI-ISP-FO-01 - Emergent Biosolutions | 256 | — | 1 |
| AS32076US | PXDNET - PIONEER NATURAL RESOURCES USA | 256 | — | 1 |
| AS33246US | BLC-AS - Bethany Lutheran College | 256 | 1 | 2 |
| AS21566US | HOTAISLE - Hot Aisle Inc. | 256 | — | 1 |
| AS14906US | MAXIM-7227 - Maxim Healthcare Services, Inc. | 256 | — | 1 |
| AS393709US | HCGAS - Harford County, Maryland | 256 | — | 1 |
| AS18571US | WESTERNRESERVEGROUP - The Western Reserve Mutual Casualty Company | 256 | — | 1 |
| AS25928US | AS-WISPER-LZR - Wisper ISP, LLC | 256 | — | 1 |
| AS29989US | URM-AS1 - URM Stores Inc | 256 | — | 1 |
| AS401069US | GLOVISAL-01 - Glovis Alabama | 256 | — | 1 |
| AS63204US | NEW-MEXICO-MILITARY-INSTITUTE - The New Mexico Military Institute | 256 | — | 1 |
| AS399881US | WIFICARIBE - WiFi Services Caribbean, Inc. | 256 | 65.5K | 2 |
| AS35866US | SILVER-CHIP - Silver Chip Interactive | 256 | 65 | 3 |
| AS54909US | VENAFI - Venafi, Inc. | 256 | — | 1 |
| AS22358US | VERDUGO-FIRE-COMM-CENTER-1 - Verdugo Fire Communications Center | 256 | — | 1 |
| AS46769US | TELECAST COMMUNICATIONS - Telecast Communications | 256 | — | 1 |
| AS399664US | EIS-ASN-01 - Eclipse Integrated Systems, Inc | 256 | — | 1 |
| AS18512US | YBP-AS - Yankee Book Peddler | 256 | — | 1 |
| AS36456US | VELOCITYCU - Velocity Credit Union | 256 | — | 1 |
| AS399253US | FLAGLER-CLERK - Flagler County Clerk of the Circuit Court & Comptroller | 256 | — | 1 |
| AS393462US | COLLETTE-HEALTH - Collette Health, LLC | 256 | 1 | 2 |