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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 | 24,645 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 643 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,307 |
| 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.
32,220 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 | 3,890 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,006 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,364 |
| — |
| 256 |
| 1 |
| AS401009US | JSMSR-NETWORK - JSMSR Network | — | 321 | 3 |
| AS396043US | TENNESSEE-WIRELESS-LLC - TENNESSEE WIRELESS LLC | — | 1 | 1 |
| AS402450US | JILLC-PRIMARY - ji's | — | 1 | 1 |
| AS399154US | SECURITYSERVICES - Vercara, LLC | — | 256 | 1 |
| AS61387US | Cloudco-LLC Cloudco LLC | — | 1 | 1 |
| AS54441US | RAVENNACREEK-AS-1 - RAVENNA CREEK, LLC | — | 16 | 1 |
| AS177US | UMICH-AS-1 - University of Michigan | — | 2 | 2 |
| AS396555US | VRSN-AC50-340 - VeriSign Global Registry Services | — | 7 | 7 |
| AS168US | UMASS-AMHERST - University of Massachusetts - AMHERST | — | 256 | 1 |
| AS35848US | GRIZZLINK - 20C, LLC | — | 16 | 1 |
| AS972US | CF3 - Cofractal, Inc. | — | 3 | 3 |
| AS198804US | RISHI-AS Rishi Ram Panthee | — | 512 | 2 |
| AS62900US | KERFUFFLE-62900 - Kerfuffle, LLC | — | 2 | 2 |
| AS210660US | CAVEFOX CaveFox LLC | — | 257 | 2 |
| AS215188US | KALLSYMS Nicholas Gregory | — | 16 | 1 |
| AS214974US | ZEROTECH-AS ZEROTECH CLOUD LLC | — | 1 | 1 |
| AS402406US | LINQ-APP - Linq | — | 2 | 2 |
| AS6043US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | 1 | 1 |
| AS55126US | HPDF-JLAB - High Performance Data Facility | — | 1 | 1 |
| AS809US | PPD-TRANSIT - PhirePhly Design | — | 1 | 1 |
| AS402933US | VOSMET - Vosmet | — | 5.2M | 10 |
| AS401775US | KV-LVDC-01 - KnightVision | — | 256 | 1 |
| AS219383US | LewisAS Andrew Lewis | — | 20 | 5 |
| AS401519US | SUNOAKI-NET-CCH - Sunoaki Network LLC | — | 2 | 2 |
| AS33654US | CMCS - Comcast Cable Communications, LLC | — | 16 | 16 |
| AS400429US | ALTHEA - Hawk Networks Inc | — | 8 | 1 |
| AS22400US | WEB2OBJECTS - Web2Objects LLC | — | 2 | 1 |
| AS5980US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | 1 | 1 |
| AS395326US | MIT-V6 - Massachusetts Institute of Technology | — | 1 | 1 |
| AS402948US | HOSTFC - HostFC, | — | 256 | 1 |
| AS402653US | WCUUSD-2026-ASN - Washington | — | 16 | 1 |
| AS397958US | SUNOAKI-NET-PREMIUM - Sunoaki Network LLC | — | 2 | 2 |
| AS402430US | HOX - Hox | — | 256 | 1 |
| AS3381US | MHPCC-AS - Maui High Performance Computing Center | — | 1 | 1 |
| AS397800US | AS-PRIMARY - ANVIL Systems Group, INC | — | 1 | 1 |
| AS399342US | SOPHOS-AS-NA - SOPHOS | — | 256 | 1 |
| AS11944US | LTC-1 - LaValle Telephone Cooperative | — | 256 | 1 |
| AS3000US | SPRINT-MRN-BLOCK - U.S. Sprint | — | 16.4K | 1 |
| AS396088US | SOMNET-AS-01 - SOMCO LLC | — | 1 | 1 |
| AS11006US | HRT-SCS - HRTec | — | 65.7K | 2 |
| AS36262US | HASHTABLE-PREMIUM-TIER - HashTable, Inc. | — | 10 | 10 |
| AS402004US | RS - Rui Sun, Sole Proprietorship | — | 2 | 2 |
| AS50842US | SERVERFORGE - ServerForge LLC | — | 64 | 1 |
| AS396874US | JAMF - JAMF | — | 1 | 1 |
| AS211169US | CARAMELFOX-AS CaramelFox Networks LLC | — | 17 | 2 |
| AS4221US | DNIC-ASBLK-04214-04221 - United States Department of Defense (DoD) | — | 2 | 2 |