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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 | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,666 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,361 |
| 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.
32,363 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 234 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,491 |
| 4.1K |
| 514 |
| 20 |
| AS394728US | MILES - Miles Cooperative Telephone Association, Inc. | 4.1K | 4.1K | 6 |
| AS13972US | WADSWORTH-CENTER - Wadsworth Center, NYS Department of Health | 4.1K | — | 1 |
| AS11102US | VYANET-OPERATING-GROUP-INC - VYANET | 4.1K | — | 1 |
| AS16556US | TOTALCHOICE-HOSTING - TotalChoice Hosting, LLC | 4.1K | — | 3 |
| AS395657US | HOPLITE-ASN - Hoplite Industries, Inc. | 4.1K | — | 15 |
| AS19718US | NCNI - MCNC | 4.1K | 1 | 2 |
| AS393439US | ULTISAT-ASN - UltiSat Inc | 4.1K | — | 6 |
| AS54457US | HCEC-HOUSTON-PRIMARY - Harris County Emergency Corps | 4.1K | — | 1 |
| AS53862US | MCDANIELCOLLEGE - McDaniel College | 4.1K | — | 1 |
| AS30243US | SPSD - The School District of the City of Saginaw | 4.1K | — | 1 |
| AS12022US | ONEMAIN-AS - OneMain Holdings, Inc | 4.1K | — | 8 |
| AS399054US | KAS-CABLE - K.A.S. Cable T.V., Inc. | 4.1K | — | 4 |
| AS21624US | CYBERLYNK-PHX - Wisconsin CyberLynk Network, Inc. | 4.1K | 65.5K | 4 |
| AS18465US | WORKDAY-01 - Workday, Inc. | 4.1K | — | 16 |
| AS22243US | CENTRACOMM - CentraComm Communications | 4.1K | — | 1 |
| AS20031US | SDP-ASN - The School District of Pittsburgh | 4.1K | — | 1 |
| AS394797US | MILLIK-ASN1 - Millikin University | 4.1K | — | 1 |
| AS13939US | SWTJC - Southwest Texas Junior College | 4.1K | — | 1 |
| AS33372US | SPARTAN-AS - Spartan Stores Inc. | 4.1K | — | 15 |
| AS401975US | RAILS - Reaching Across Illinois Library System | 4.1K | — | 1 |
| AS6195US | GSCO - The Goldman Sachs Group, Inc. | 4.1K | — | 16 |
| AS54323US | MMC-AS-NOV2011 - Maimonides Medical Center | 4.1K | — | 4 |
| AS33598US | GSLLC - The Goldman Sachs Group, Inc. | 4.1K | — | 16 |
| AS31827US | BNT-NETWORK-ACCESS - Biz Net Technologies | 4.1K | 65.5K | 2 |
| AS46130US | POSITIVE-USA - The Positive Internet Company, Inc. | 4.1K | — | 1 |
| AS400224US | TARLETON - Tarleton State University | 4.1K | — | 1 |
| AS27578US | AIRBRIDGE - AirBridge Broadband LLC | 4.1K | 65.5K | 5 |
| AS29948US | EMPIRICAL-NET - Empirical Networks, Ltd. | 4.1K | 4.1K | 2 |
| AS46094US | LEE-COLLEGE - Lee College | 4.1K | — | 1 |
| AS46990US | ARCSERVE-01 - Arcserve | 4.1K | — | 5 |
| AS26584US | 26584 - VERTAFORE, INC | 4.1K | — | 11 |
| AS3719US | CT-JIS - State of Connecticut Judicial Branch | 3.8K | 1 | 16 |
| AS349US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 3.8K | 256 | 16 |
| AS3555US | ATS-NET - AT&T Technical Services Company, Inc. | 3.8K | — | 12 |
| AS33307US | HOSPITALITY-WIRELESS - Hospitality Integrated Services Inc | 3.8K | 65.5K | 12 |
| AS46318US | TECHOPS-ASN-4 - Live Nation Entertainment, Inc. | 3.8K | — | 15 |
| AS396998US | PATH-NETWORK - Path Network, Inc. | 3.8K | 91.1K | 44 |
| AS7021US | VRIS-7021 - Verizon Business | 3.8K | — | 4 |
| AS16599US | BENTLEY-SYSTEMS - Bentley Systems | 3.8K | — | 7 |
| AS26650US | ALPHA-TECHNOLOGIES - Alpha Technologies Inc | 3.8K | — | 4 |
| AS18692US | NEUBERGER - Neuberger Berman | 3.8K | — | 13 |
| AS16611US | INFINIAHOST - InfiniaHost.com | 3.8K | 4.1K | 8 |
| AS19079US | LOCL-NET - Locl-Net Inc | 3.8K | — | 15 |
| AS7030US | EXWIRE - Exwire, Inc. | 3.8K | 65.5K | 16 |
| AS13824US | AIREBEAM - AireBeam | 3.8K | — | 5 |
| AS21973US | XPONET - Xponet | 3.8K | 4 | 19 |