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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 | 23,661 |
| 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 |
| 236 |
| 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 | 4,490 |
| 512 |
| — |
| 1 |
| AS400653US | UPENN-WHARTON-SF - University of Pennsylvania | 512 | 1 | 2 |
| AS396086US | HAMPSHIRE-CAMPUS - Hampshire College | 512 | — | 2 |
| AS402127US | TAKOYAKI-NET - Project Takoyaki Technologies | 512 | 4.1K | 3 |
| AS401802US | KANTIME-01 - KanTime | 512 | — | 2 |
| AS35974US | QTS-EEM - Quality Technology Services, LLC | 512 | — | 2 |
| AS400227US | INTERACTIVE-BROKERS-CORP - Interactive Brokers Corp | 512 | — | 2 |
| AS13454US | PA-TURNPIKE - PENNSYLVANIA TURNPIKE COMMISSION | 512 | — | 2 |
| AS396098US | DOE-HANFORD - U.S. Department of Energy - Hanford | 512 | 65.5K | 3 |
| AS397488US | NEW-ALBANY-PLAIN-LOCAL-SCHOOLS-AS - New Albany-Plain Local School District | 512 | 4.1K | 3 |
| AS25735US | SLOTH-NET - Sloth Networks | 512 | 256 | 3 |
| AS55181US | KEUKA-COLLEGE - Keuka College | 512 | — | 2 |
| AS7124US | DACSCX-US - DACS-IX | 512 | 264 | 11 |
| AS5284US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | 512 | — | 2 |
| AS400555US | ISOGRAM - Isogram, LLC | 512 | 65.5K | 3 |
| AS26941US | SHUTTERSTOCK - Shutterstock Inc | 512 | — | 2 |
| AS16896US | NCN - NCN | 512 | — | 2 |
| AS393677US | HLS - Hematogenix Laboratory Services, LLC | 512 | — | 2 |
| AS396220US | AS-SNOPUD - Public Utility District No. 1 of Snohomish County | 512 | — | 1 |
| AS54514US | JFNA - Jewish Federations of North America, Inc. | 512 | — | 2 |
| AS467US | AFCONC-BLOCK1-AS - Air Force Systems Networking | 512 | — | 1 |
| AS18518US | ARES-MGMT - Ares Management LLC | 512 | — | 2 |
| AS19843US | PROSPERMARKETPLACE - Prosper Marketplace, Inc | 512 | 2 | 4 |
| AS400242US | SIEMENS-EDC-MIF - Siemens Corporation | 512 | 1 | 3 |
| AS15202US | GELLER - Geller & Company LLC | 512 | — | 2 |
| AS15115US | PREMIERE-NETWORKS-15115 - Premiere Networks | 512 | — | 1 |
| AS399066US | MMS-PUBLIC-AS01 - Massachusetts Medical Society | 512 | — | 2 |
| AS26402US | SANTABARBARACITY - City of Santa Barbara | 512 | 2 | 4 |
| AS12120US | AAO-AIO - Amphenol Corp | 512 | — | 2 |
| AS27453US | ASN1 - Systemax Inc. | 512 | — | 2 |
| AS6508US | VANTIVA - Vantiva USA Shared Services Inc. | 512 | — | 2 |
| AS401320US | GLOBALISER - Globaliser, Inc. | 512 | 1 | 3 |
| AS395901US | KUDU-SYSTEMS - Kudu Systems, LLC | 512 | — | 2 |
| AS19858US | GENSLER - M. Arthur Gensler Jr. & Associates, Inc. | 512 | — | 2 |
| AS401755US | TSI-BGP - Think Smart Group, Inc. | 512 | — | 1 |
| AS21969US | FSA-AMH-AS01 - Firstsource Advantage LLC | 512 | — | 2 |
| AS46183US | MARYANNLIEBERTINC - MARY ANN LIEBERT, INC | 512 | — | 2 |
| AS394776US | RGL-ASN-1 - JACK Entertainment LLC | 512 | — | 2 |
| AS17342US | HCCFL-AS - Hillsborough Community College | 512 | — | 2 |
| AS18679US | I4A-NETWORK - internet4associations | 512 | — | 2 |
| AS397378US | PHOENIXNAP-BRA - PhoenixNAP LLC | 512 | 257 | 4 |
| AS18956US | LLAMA-NETWORKS-01 - Llama Networks LLC | 512 | 2 | 4 |
| AS398837US | HOPE - Hope Enterprise Corporation | 512 | 257 | 4 |
| AS397473US | HTG-VOLARE-01 - HighPoint Technology Group, LLC | 512 | — | 2 |
| AS398447US | OHANACRAFT - OHANACRAFT, LLC | 512 | 4 | 6 |
| AS394761US | PTS-MAIN - Princeton Theological Seminary | 512 | — | 2 |
| AS63243US | SYNERGENT - Synergent | 512 | — | 2 |