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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 | 3,138 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.1M | 21,138 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,244 |
| 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 | 3,674 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,951 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,417 |
| 256 |
| — |
| 1 |
| AS32759US | UNITED-COMMUNITY-BANKS - United Community Bank | 256 | — | 1 |
| AS394124US | SHOESHOW-AS-1 - SHOE SHOW Inc. | 256 | 4.1K | 2 |
| AS33521US | MISSOULA-COUNTY-PUBLIC-SCHOOLS - Missoula County Public Schools | 256 | — | 1 |
| AS19173US | TEXAS-EXCHANGE-BANK - Texas Exchange Bank | 256 | — | 1 |
| AS40303US | AKSIA - AKSIA LLC | 256 | — | 1 |
| AS397030US | HILTON-H - Hilton Worldwide Holdings Inc | 256 | — | 1 |
| AS394523US | HILLNET - The Hill School | 256 | — | 1 |
| AS62901US | MOELIS-CO - Moelis & Company Holdings LP | 256 | — | 1 |
| AS36093US | PHILLONGDEALERSHIPSASN - Phil Long Dealerships | 256 | — | 1 |
| AS18578US | SCHLUTER-SYSTEMS-LP - Schluter Systems L.P. | 256 | — | 1 |
| AS14612US | VNC-MAIN-LIST - Velios Networks Corp. | 256 | — | 1 |
| AS400278US | TFC-ASN-01 - TITLE FINANCIAL CORPORATION | 256 | — | 1 |
| AS19307US | MONTG-47-AS - Water Works & Sanitary Sewer Board of the City of Montgomery | 256 | — | 1 |
| AS395288US | COLLIN-EDU - Collin County Community College District | 256 | — | 1 |
| AS22782US | AS1 - Texas A&M University | 256 | — | 1 |
| AS15172US | REINHARDT-WAL-1 - Reinhardt University | 256 | — | 1 |
| AS40425US | GLDS-CA - GREAT LAKES DATA SYSTEMS, INC. | 256 | — | 1 |
| AS398146US | EMYPEOPLE - eMyPeople LLC | 256 | — | 1 |
| AS396333US | CYWEST-COMMUNICATIONS - Cywest Communications, Inc. | 256 | — | 1 |
| AS401874US | CRM-080 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS63377US | CLOUDERA-PA - Cloudera, Inc. | 256 | 3 | 4 |
| AS398280US | SYSTEMVERSE-ARIN-01 - Systemverse LLC | 256 | 4.1K | 2 |
| AS46835US | CENTRASTATE-MEDICAL-CENTER - Centrastate Medical Center, Inc. | 256 | — | 1 |
| AS400632US | KUSD-ASN-01 - KUSD | 256 | — | 1 |
| AS396035US | KENTUCKY-WIFI - Compulinx, Inc. | 256 | — | 1 |
| AS31904US | NCWCD-80513 - Northern Water | 256 | — | 1 |
| AS62826US | CSO-AS - CHICAGO SYMPHONY ORCHESTRA | 256 | — | 1 |
| AS25643US | NEWERA-01 - New Era Technology, Inc | 256 | — | 1 |
| AS40110US | CCI-ASN - CCI | 256 | — | 1 |
| AS398462US | VPHARM-UK - Vertex Pharmaceuticals | 256 | — | 1 |
| AS53853US | JAMA-ASN - Jama Software, Inc. | 256 | — | 1 |
| AS397652US | SMSC - SMSC | 256 | — | 1 |
| AS32547US | NYPR-1 - New York Public Radio | 256 | — | 1 |
| AS402195US | MGH-MDF-01 - Marion General Hospital, Inc. | 256 | — | 1 |
| AS26045US | LUBBCO1 - Lubbock County | 256 | — | 1 |
| AS397813US | CLARKE-MULTIHOME-IP-BLOCK - Clarke Broadcasting Corporation | 256 | — | 1 |
| AS394627US | ASN-UCC - United Conveyor Corporation | 256 | — | 1 |
| AS20439US | INTUIT-ITH - Intuit Inc. | 256 | — | 1 |
| AS26018US | QAWOLF-ASN-01 - QA WOLF, INC. | 256 | — | 1 |
| AS393838US | LPH-LIBERTYPUMPS - Liberty Pumps, Inc. | 256 | 1 | 2 |
| AS63478US | DKH-PUT-ASN - Day Kimball Hospital | 256 | — | 1 |
| AS396169US | AS-GHCIL-01 - HCI, LLC | 256 | 65.5K | 2 |
| AS402127US | TAKOYAKI-NET - Project Takoyaki Technologies | 256 | 256 | 2 |
| AS39946US | CHICKFILA - Chick-Fil-A, Inc | 256 | — | 1 |
| AS40872US | BERNARDS-NETWORK - Bernards | 256 | — | 1 |
| AS3066US | RS-AS - Robert E. Seastrom | 256 | — | 1 |