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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 | 23,999 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,299 |
| 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.
32,154 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 231 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,882 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,990 |
| AS701US | UUNET - Verizon Business | 43.6M | 995 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,318 |
| 2.3K |
| 82 |
| 16 |
| AS19153US | UTMARTIN - The University of Tennessee at Martin | 2.3K | — | 4 |
| AS20404US | AS20404 - NRG Energy, Inc. | 2.3K | — | 7 |
| AS30113US | DEMATIC-US - Dematic Corp. | 2.3K | — | 6 |
| AS32158US | BERKLEY-TECHNOLOGY-SERVICES - Berkley Technology Services LLC | 2.3K | — | 9 |
| AS51082US | ISP-A1-Internet SPUZE LLC | 2.3K | 524.3K | 11 |
| AS394613US | CITY-OF-GRIFFIN - City of Griffin | 2.3K | — | 2 |
| AS32852US | LEXNE-ASN-1 - Lexington Electric System | 2.3K | 65.5K | 3 |
| AS26141US | CUBEPATH - CubePath | 2.3K | 69.6K | 14 |
| AS46339US | AS-CSDVRS - ZP Better Together, LLC | 2.3K | — | 4 |
| AS20460US | MYTHOSTECH - TFB NET | 2.3K | — | 9 |
| AS399305US | WABTEC-ASN-WCS - Westinghouse Air Brake Technologies Corporation | 2.3K | — | 5 |
| AS23286US | HULU - Hulu, LLC | 2.3K | — | 6 |
| AS19460US | SUTH - Sutherland Global Services, Inc. | 2.3K | — | 8 |
| AS11621US | REYESHOLDINGSLLC - Reyes Holdings, L.L.C. | 2.3K | — | 9 |
| AS19311US | STEWART-1 - Stewart Title | 2.3K | — | 9 |
| AS53559US | ANONYMIZER - KST Networks | 2.3K | — | 9 |
| AS63452US | VELOCIHOST - Velocihost Inc. | 2.3K | 769 | 10 |
| AS13702US | INGRAM-BOOK-GROUP - Ingram Book Group | 2.3K | — | 6 |
| AS7253US | MAINSTAY-COMMUNICATIONS - Mainstay Communications | 2.3K | — | 2 |
| AS22056US | SITEL-OMA - Sitel | 2.3K | 2 | 11 |
| AS397269US | FLEX-DMF - Flextronics International USA, Inc. | 2.3K | — | 5 |
| AS29955US | WASHBURN-UNIVERSITY - Washburn University | 2.3K | — | 2 |
| AS20148US | VANTIVA-CH - Vantiva USA Shared Services Inc. | 2.3K | 2 | 11 |
| AS21857US | PROHEALTH-CARE - ProHealth Care Inc. | 2.3K | — | 6 |
| AS33569US | ALLHOSTSHOP - ALLHOSTSHOP.COM | 2.3K | — | 9 |
| AS6077US | BCBSNE - Blue Cross Blue Shield of Nebraska | 2.3K | — | 3 |
| AS399728US | PFOUNDATION - P Foundation | 2.3K | 10 | 16 |
| AS7280US | YAHOO-FC - Yahoo Holdings Inc. | 2.3K | 9 | 18 |
| AS62672US | STREAMWIDE-INC - Streamwide Inc. | 2.3K | 7 | 16 |
| AS17176US | BCG-NETWORKS - BCG Networks LLC | 2.3K | 256 | 10 |
| AS398772US | FIBERASN-US - Fiber Optical Network LLC | 2.3K | — | 6 |
| AS13535US | NING - Ning Interactive, Inc. | 2.3K | 1 | 7 |
| AS1611US | MABELTEL - Mabel Cooperative Telephone Company | 2.3K | — | 4 |
| AS399234US | EQA-WAN-01 - Philip Morris USA | 2.3K | — | 8 |
| AS54309US | NEGU - NEGU | 2.3K | 259 | 12 |
| AS399347US | SIMPLE-FIBER-OPE - Simple Fiber, LLC | 2.3K | 4.1K | 9 |
| AS62571US | IMPERVA-INC-US-SJ-COLO - IMPERVA INC | 2.3K | 4 | 13 |
| AS11281US | ROBLOX-CORPORATE - Roblox | 2.3K | 2 | 11 |
| AS14721US | LAYER-7-NETWORKS - Layer 7 Consulting, LLC | 2.3K | — | 3 |
| AS40001US | STROUD-MEDIA-NETWORKS - Gravel Hill Holdings | 2.3K | — | 5 |
| AS55248US | WHOA-NETWORKS - Whoa Networks Inc | 2.3K | — | 9 |
| AS36675US | CCPS-1 - Collier County Public Schools | 2.3K | — | 4 |
| AS399761US | STREAMIT-001 - Stream IT Networks LLC | 2.3K | 4.1K | 7 |
| AS400830US | BAYFIELD-WIRELESS - Bayfield Wireless | 2.3K | 18 | 27 |
| AS396936US | HTH2 - HTH | 2.3K | — | 9 |
| AS12110US | AS-INTER - Internex Inc. | 2.3K | 69.6K | 10 |