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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218.2M | 25,263 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 641 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,336 |
| 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.
32,247 autonomous systems registered to United States. Click an AS for detail.
| 72.9M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,900 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,004 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,350 |
| 1.8K |
| — |
| 5 |
| AS27401US | KLD-MN-US - KLDiscovery Ontrack, LLC | 1.8K | — | 7 |
| AS30051US | SCCGOV - Santa Clara County | 1.8K | — | 6 |
| AS32165US | BCBSMA - Blue Cross and Blue Shield of Massachusetts, Inc. | 1.8K | — | 7 |
| AS32686US | SMART-CITY-RPCC - SMART CITY NETWORKS, LIMITED PARTNERSHIP | 1.8K | — | 3 |
| AS396016US | HYATT-CORP2 - Hyatt Corporation | 1.8K | 4 | 6 |
| AS40391US | CHSINC - CHS COOPERATIVES FOUNDATION | 1.8K | — | 7 |
| AS395584US | PDC-BGP - Data Management | 1.8K | — | 4 |
| AS401170US | HBG-IP - HBG Inc. | 1.8K | 256 | 5 |
| AS40126US | AS-MOLSONCOORS - Molson Coors Beverage Company | 1.8K | — | 4 |
| AS400339US | TRINITY-CYBER-01 - Trinity Cyber | 1.8K | 82 | 14 |
| AS18666US | NOKIA-ASN - Nokia of America Corporation | 1.8K | 8.3K | 8 |
| AS17082US | SMART-CITY-MBCC - SMART CITY NETWORKS, LIMITED PARTNERSHIP | 1.8K | — | 6 |
| AS6524US | OPENTEXT-NA-US-BROOKPARK-2 - GXS | 1.8K | — | 7 |
| AS13875US | AS13875-MX-FIBER - MxFiber LLC | 1.8K | — | 7 |
| AS399521US | BNS - BNS | 1.8K | 5 | 12 |
| AS30382US | IPTELX - IPtelX | 1.8K | 65.5K | 8 |
| AS63001US | NTS-ALEXANDRIA-01 - Vexus Fiber | 1.8K | — | 3 |
| AS53873US | SCL-550-53873 - SATC COLO LLC | 1.8K | 65.5K | 5 |
| AS53602US | MILWAUKEE-ELECTRIC-TOOL-CORPORATION - Milwaukee Electric Tool Corporation | 1.8K | — | 6 |
| AS396002US | TLVTPAATL - TeleVoIPs | 1.8K | — | 4 |
| AS10717US | SCHOLASTIC - Scholastic Inc. | 1.8K | — | 6 |
| AS399631US | STREAMICAN - StreamICan | 1.8K | 1 | 8 |
| AS53626US | CORUS360 - Corus360 | 1.8K | — | 4 |
| AS398830US | ICOMERA - Icomera US, Inc. | 1.8K | 6 | 13 |
| AS3783US | AIU-ALLEGHENY-CONNECT-RWAN - Allegheny Intermediate Unit | 1.8K | — | 7 |
| AS5778US | CENTURYLINK-LEGACY-EMBARQ-RCMT - CenturyLink Communications, LLC | 1.8K | — | 7 |
| AS62754US | REDI-NET - REDI Net | 1.8K | — | 3 |
| AS23177US | TNB-NET - Thomas & Betts Corporation | 1.8K | — | 7 |
| AS395073US | UMMC - University of Mississippi Medical Center | 1.8K | — | 7 |
| AS395856US | 2KGAM-395856 - 2K GAMES, Inc. | 1.8K | — | 4 |
| AS16940US | ASPECT - Aspect Software, Inc. | 1.8K | — | 6 |
| AS46998US | GLOBAL-NETSOLUTIONS - Global Netsolutions LLC | 1.8K | 256 | 8 |
| AS26762US | CNVR-US-EAST - Conversant, LLC | 1.8K | 34 | 9 |
| AS32222US | ACCESSLINE-COM-2000 - AccessLine Communications Corp. | 1.8K | — | 7 |
| AS46358US | UAT - University of Advancing Technology | 1.8K | — | 7 |
| AS395540US | NITEL-AS395540 - Hypercore Networks, Inc | 1.8K | — | 4 |
| AS23305US | WORTHINGTONINDUSTRIES - Worthington Enterprises, Inc. | 1.8K | — | 7 |
| AS22111US | ELOYALTY - Mattersight Corporation | 1.8K | — | 3 |
| AS30150US | EXEGY - Exegy Incorporated | 1.8K | 65.5K | 11 |
| AS402665US | SLA - SLA | 1.8K | 5 | 12 |
| AS33565US | CONTIN-27 - Continental Grain Company | 1.8K | — | 5 |
| AS399491US | VIOLA-COMMUNICATIONS - Viola Communications Inc | 1.8K | — | 5 |
| AS15951US | DJUK Dow Jones & Company, Inc. | 1.8K | — | 6 |
| AS33365US | CINFIN-ASN-01 - Cincinnati Financial Corporation | 1.8K | — | 5 |
| AS394802US | BRISTOLHOSPITAL - BRISTOL HOSPITAL INCORPORATED | 1.8K | — | 4 |
| AS394808US | DEMAN-AS - Salesforce.com, Inc. | 1.8K | — | 7 |