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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. | 218.2M | 25,766 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,308 |
| 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.
32,243 autonomous systems registered to United States. Click an AS for detail.
| 73M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,898 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,998 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,359 |
| 512 |
| — |
| 2 |
| AS212935US | THEORI Theori Inc | 512 | 1 | 3 |
| AS2021US | UNISYS-INT - Unisys Corporation | 512 | — | 2 |
| AS401844US | GSH-AS - Good Samaritan Hospital | 512 | — | 1 |
| AS14085US | LEARN-I2PX - LEARN | 512 | 2 | 4 |
| AS399102US | WA-ST-SCHOOL-BLIND - Washington State School for the Blind | 512 | — | 2 |
| AS398063US | ADVISOR360-ASN - Advisor360 LLC | 512 | — | 2 |
| AS32562US | SLACKER-1 - Slacker Inc. | 512 | — | 2 |
| AS31955US | ASN-CONNEXUSENERGY - CONNEXUS ENERGY | 512 | — | 2 |
| AS399781US | AE - AE Hosting | 512 | — | 2 |
| AS401460US | METROPLUS-HEALTH - METROPLUS HEALTH PLAN, INC. | 512 | — | 2 |
| AS397670US | CVCU-ASN - Covantage Credit Union | 512 | — | 1 |
| AS63148US | QTI - Quick Technologies Inc. | 512 | — | 1 |
| AS46895US | CSGN - CSG Systems Inc. | 512 | — | 2 |
| AS5284US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | 512 | — | 2 |
| AS398447US | OHANACRAFT - OHANACRAFT, LLC | 512 | 4 | 6 |
| AS395508US | PORTS-AMERICA - Ports America Shared Services, Inc. | 512 | — | 2 |
| AS36567US | WAPT-TV - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS393677US | HLS - Hematogenix Laboratory Services, LLC | 512 | — | 2 |
| AS398670US | E-NETWORKS - Takk LLC | 512 | — | 2 |
| AS400555US | ISOGRAM - Isogram, LLC | 512 | 65.5K | 3 |
| AS20007US | CIT-ASN-01 - cloudIT | 512 | — | 2 |
| AS395410US | USALLIANCE-FCU-411 - USAlliance Federal Credit Union | 512 | — | 2 |
| AS4966US | CASELLAWASTE - Casella Waste System Inc | 512 | — | 2 |
| AS395279US | MICLOUD-US - Mitel Networks, Inc. | 512 | — | 2 |
| AS16905US | LEARN-RESEARCH - LEARN | 512 | 2 | 4 |
| AS54636US | AS-DBIO - Rackspace Hosting | 512 | — | 1 |
| AS394916US | PHLAIRPORT - Philadelphia International Airport | 512 | — | 2 |
| AS18459US | UAIC-INTERNET - UNITED AUTOMOBILE INSURANCE | 512 | — | 2 |
| AS395901US | KUDU-SYSTEMS - Kudu Systems, LLC | 512 | — | 2 |
| AS54740US | DYNAWEB - Dynaweb Foundation | 512 | — | 2 |
| AS400552US | ODYACAD-ASN - Odyssey Academy, Inc. | 512 | — | 2 |
| AS394651US | AKUNA-BGP - Akuna Capital LLC | 512 | — | 2 |
| AS396893US | WWMS - mitelefono.com | 512 | 65.5K | 4 |
| AS22666US | GBHSD - Glenbrook High School District | 512 | — | 1 |
| AS32419US | BALDWIN-LYONS - Protective Insurance Corporation | 512 | — | 2 |
| AS27459US | AXOSBANK-AS - AXOS BANK | 512 | — | 2 |
| AS15249US | XPRESS-DATA - Xpress Data, Inc. | 512 | — | 2 |
| AS63243US | SYNERGENT - Synergent | 512 | — | 2 |
| AS13814US | RCB1936 - RCB Bank | 512 | — | 2 |
| AS399867US | FREEDOM-NETWORKS - Freedom Networks LLC | 512 | — | 2 |
| AS402151US | INFINIT-01 - Infinite Portal LLC | 512 | — | 1 |
| AS26941US | SHUTTERSTOCK - Shutterstock Inc | 512 | — | 2 |
| AS31788US | POPPY - Poppy Inc | 512 | 4.1K | 3 |
| AS27468US | GOODWILL-INDUSTRIES-OF-ORANGE-COUNTY - Goodwill Industries of Orange County | 512 | — | 2 |
| AS7133US | NYPP-AS - New York Independent System Operator, Inc. | 512 | 1 | 3 |
| AS46177US | WHITE-SKY-HOSTING - White Sky Hosting | 512 | 256 | 3 |