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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 | 24,358 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,303 |
| 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.
32,168 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 | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,996 |
| AS701US | UUNET - Verizon Business | 43.6M | 994 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,342 |
| 768 |
| — |
| 3 |
| AS402456US | BJERKERUD - Bjerkerud, | 768 | 4.1K | 7 |
| AS393667US | FARSIGHT - Farsight Security, Inc | 768 | 3 | 6 |
| AS20381US | CABLELABS-LV - Cable Television Laboratories, Inc. | 768 | 1 | 4 |
| AS395394US | XYTEL - xyTel LLC | 768 | 65.5K | 5 |
| AS22450US | XN-NC-ASN01 - Xobee Networks Inc. | 768 | — | 3 |
| AS32540US | HP-HOOD - HP Hood | 768 | — | 3 |
| AS397415US | PURE-STORAGE-ENG - Pure Storage, INC. | 768 | 38 | 26 |
| AS13435US | COMMUNITY-HEALTH-CHOICE - Community Health Choice, Inc. | 768 | — | 3 |
| AS63191US | WEALTHFRONT-1 - Wealthfront Corporation | 768 | — | 3 |
| AS395206US | ROTARYCORP-ASN - Rotary Corporation | 768 | — | 2 |
| AS20235US | MYLANP-AS - Mylan Pharmaceuticals Inc. | 768 | — | 2 |
| AS11648US | CONECTIV-SCS - Conectiv Supply Chain Solutions, Inc. | 768 | — | 3 |
| AS401673US | BRTEL-USAS1 - Bullroar Telecom, Ltd. | 768 | 4.6K | 6 |
| AS25936US | MJHS - MJHS Health System | 768 | — | 2 |
| AS396281US | AGCOMTECH - AGILITY COMMUNICATIONS AND TECHNOLOGY SERVICES COMPANY | 768 | — | 3 |
| AS399946US | AURORA-LEO - Pacific Dataport Inc. | 768 | — | 3 |
| AS54593US | ATHEN-EPOC - Athenahealth | 768 | — | 3 |
| AS11842US | REGAL-ENTERTAINMENT-AS - Regal Entertainment Group | 768 | — | 3 |
| AS400348US | BOLD-FR-NET - Apogee Telecom Inc. | 768 | — | 2 |
| AS54971US | BROWN-TECHNOLOGIES - Brown Technologies, LLC | 768 | — | 3 |
| AS397085US | SIGUS - Signal Restoration Services | 768 | 256 | 4 |
| AS32257US | AETN-STAM-01 - A&E Television - Stamford | 768 | — | 3 |
| AS22399US | COBA-1 - Commerzbank AG New York Branch | 768 | — | 3 |
| AS36431US | PIH1 - PIH Health, Inc. | 768 | — | 2 |
| AS17341US | AS17341 - StorageCraft Technology, LLC | 768 | — | 3 |
| AS14780US | YAHOO - Yahoo Holdings Inc. | 768 | 1 | 4 |
| AS36345US | PNMABQ-1 - Public Service Company of New Mexico | 768 | 65.5K | 4 |
| AS36172US | MHCC-AS001 - MOUNT HOOD COMMUNITY COLLEGE | 768 | — | 2 |
| AS12104US | CDE-ASN - State Farm Mutual Automobile Insurance Company | 768 | — | 3 |
| AS53524US | DYN-INTL - DYNCORP INTERNATIONAL LLC | 768 | — | 3 |
| AS35958US | CCN42 - MCCARRAN INTERNATIONAL AIRPORT | 768 | — | 3 |
| AS33403US | HEIYO-TELECOM - HEIYO CLOUD CORP. | 768 | — | 3 |
| AS30551US | ASC-163-ASN01 - AK Steel Corporation | 768 | — | 2 |
| AS401539US | KLUST-US-DE1 - Corvex, Inc. | 768 | — | 2 |
| AS399184US | COLVILLE-ASN-01 - Confederated Tribes of the Colville Reservation | 768 | — | 3 |
| AS15346US | ENOVA-HLR - Enova International, Inc. | 768 | — | 2 |
| AS398731US | GOODMAN-MANUFACTURING-COMPANY - Goodman Manufacturing Company, L.P. | 768 | — | 3 |
| AS30188US | TELEVERGENCE - Televergence Solutions Inc. | 768 | — | 3 |
| AS54926US | THRIVE-CAN3 - Thrive Operations, LLC | 768 | — | 2 |
| AS400351US | EDIFECS - Edifecs, Inc. | 768 | — | 3 |
| AS26255US | OAKTONCOMMUNITYCOLLEGE - Oakton Community College | 768 | — | 3 |
| AS40043US | LIFESPAN - Brown University Health | 768 | — | 3 |
| AS62804US | BITSHELTER-NYC - PhotoShelter, Inc. | 768 | — | 2 |
| AS17058US | INTELLIVERSE - Intelliverse | 768 | — | 3 |
| AS394316US | ALTRA - Altra Federal Credit Union | 768 | — | 3 |
| AS36336US | NATIXIS - Natixis Advisors, LLC | 768 | — | 3 |