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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
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. | 218.1M | 24,630 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 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.
32,219 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 | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| WESTERNCARRIERS-NJ - Western Carriers Inc. |
| 256 |
| — |
| 1 |
| AS19405US | HRSD-INTERNET-IP-BLOCK - Hampton Roads Sanitation District | 256 | — | 1 |
| AS19336US | BLAIN-SUPPLY-PRIMARY - BLAIN SUPPLY, INC | 256 | — | 1 |
| AS1023US | COMPUTER-TEAM-INC - COMPUTER TEAM INC. | 256 | — | 1 |
| AS399345US | AAFCU-PDC - American Airlines Federal Credit Union | 256 | — | 1 |
| AS17142US | THERASOFTONLINE - Therasoft Inc | 256 | — | 1 |
| AS36402US | NORTH-OAKS-HEALTH-SYSTEM - North Oaks Health System | 256 | — | 1 |
| AS16618US | FUC-AS-16618 - Finastra USA Corporation | 256 | — | 1 |
| AS36078US | MI-DATACENTER-2019 - M/I Homes, Inc | 256 | — | 1 |
| AS17160US | NCOM-NA - Neofelis Communications | 256 | 4.1K | 3 |
| AS394817US | THE-SALVATION-ARMY-USE - The Salvation Army | 256 | — | 1 |
| AS11217US | CLM-ASN - Carter Ledyard & Milburn LLP | 256 | — | 1 |
| AS402230US | STRATO - Strato Labs Inc | 256 | 1 | 2 |
| AS394227US | ETTKY - Eastern Telephone & Technologies, Inc. | 256 | — | 1 |
| AS46221US | MISCHOICE - MIS Choice, Inc. | 256 | — | 1 |
| AS31948US | HQ - Santa Ana Star Casino Hotel | 256 | — | 1 |
| AS30308US | MACFCU - Mid-Atlantic Corporate Federal Credit Union | 256 | — | 1 |
| AS397729US | FCMC-68234330 - Fulton County Medical Center | 256 | — | 1 |
| AS30662US | VCU-01 - Veridian Credit Union | 256 | — | 1 |
| AS36652US | KOCHTRUCKING - KOCH TRUCKING | 256 | — | 1 |
| AS36325US | OCNL-AS36325 - Operations & Compliance Network LLC | 256 | — | 1 |
| AS400730US | SPARTANBURGCOUNTY-192-146-148-0 - Spartanburg County | 256 | — | 1 |
| AS20274US | FVCC-AS - Flathead Valley Community College | 256 | — | 1 |
| AS401495US | IVA-ASN-1 - IVA | 256 | — | 1 |
| AS400786US | PFS - PFS Ltd | 256 | — | 1 |
| AS40856US | SBL-ASN - Sarah Bush Lincoln Health Center | 256 | — | 1 |
| AS397595US | MTAPD-LIC - MTAPD | 256 | 2 | 3 |
| AS19268US | MCHEST-NOC-1 - MChest | 256 | — | 1 |
| AS393272US | PORT-MADISON-ENTERPRISES - Port Madison Enterprises | 256 | — | 1 |
| AS401962US | CUDDLE-PAWS - CuddlePaws | 256 | — | 1 |
| AS397109US | CPASNET1 - Centerview Partners, LLC | 256 | — | 1 |
| AS400131US | QCRH-AS - QCR Holdings, Inc. | 256 | — | 1 |
| AS46168US | CALLTOWER - CallTower, Inc. | 256 | — | 1 |
| AS402117US | WHITE-TIE-PRODUCTIONS - White Tie Productions LLC | 256 | — | 1 |
| AS399205US | MAYSTREET-INET-01 - Maystreet | 256 | — | 1 |
| AS54998US | SJCHS-SAV-GA - St. Josephs/Candler Health System, Inc. | 256 | — | 1 |
| AS16794US | THADDEUS-STEVENS-COLLEGE - Thaddeus Stevens College of Technology | 256 | — | 1 |
| AS21629US | TWR - TWR Tech, LLC | 256 | 3 | 4 |
| AS32984US | RUELALA-INC - Rue La La Inc | 256 | — | 1 |
| AS397276US | FL-NINTHCIRCUIT - Ninth Judicial Circuit Court of Florida | 256 | — | 1 |
| AS397413US | SAISD - San Antonio Independent School District | 256 | — | 1 |
| AS394287US | FOURPOINT - FourPoint Energy, LLC | 256 | — | 1 |
| AS397723US | LAST-MILE-NETWORKS - Last Mile Networks LLC | 256 | 65.5K | 2 |
| AS46150US | SNHU - Southern New Hampshire University | 256 | — | 1 |
| AS401099US | HTC-IS-01 - Horry Telephone Cooperative, Inc. | 256 | — | 1 |
| AS1065US | TANGERINE-LV - Tangerine Global | 256 | — | 1 |
| AS396148US | DADDARIO - D'Addario & Company Inc. | 256 | — | 1 |