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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 | 3,139 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,162 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,243 |
| 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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 383 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,670 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,950 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,372 |
| 256 |
| — |
| 1 |
| AS400685US | NAPER-AS-01 - City of Naperville | 256 | — | 1 |
| AS401185US | EVOLUTIONFIBER-FL - Evolution Fiber LLC | 256 | — | 1 |
| AS395284US | SHENKMANCAPITAL - Shenkman Capital Management, Inc. | 256 | — | 1 |
| AS18908US | TECHNOLOGY-AND-BUSINESS-SOLUTIONS - Technology & Business Solutions | 256 | — | 1 |
| AS672US | DNIC-AS-00672 - Headquarters, USAISC | 256 | — | 1 |
| AS395231US | IFANR - IFANR LLC | 256 | 4.1K | 2 |
| AS32493US | CUREMD - CureMD Corp. | 256 | — | 1 |
| AS398303US | DIAMEDIC-SLC001 - Diamedic.NET | 256 | — | 1 |
| AS27414US | CARISDX - Caris Diagnostics, Inc. | 256 | — | 1 |
| AS23880US | Yahoo-AEA - Internet content provider | 256 | 1 | 2 |
| AS10723US | MGL-40-ASN - Meritage Group LP | 256 | — | 1 |
| AS398360US | CKT-CLOUD - Common Knowledge Technology Inc | 256 | — | 1 |
| AS64210US | ALTERA - Altera Corporation | 256 | — | 1 |
| AS16752US | EZXAS - EZX, Inc. | 256 | — | 1 |
| AS397571US | PLEXUSSYSTEMS-DV - ROCKWELL AUTOMATION Inc. | 256 | — | 1 |
| AS62924US | COBNET-ASN-1 - City of Bryan, Texas | 256 | — | 1 |
| AS397333US | PETCO-DDC - Petco | 256 | — | 1 |
| AS46242US | SAFEWAYINS1 - Safeway Insurance Group | 256 | — | 1 |
| AS30498US | STRAND - STRAND BOOK STORE, INC. | 256 | — | 1 |
| AS398199US | AMS-DUH-NC - HEWLETT PACKARD ENTERPRISE COMPANY | 256 | — | 1 |
| AS397371US | HCDE-TEXAS - Harris County Department of Education Public Facil | 256 | — | 1 |
| AS925US | SIFIBE - SiFibe, LLC | 256 | — | 1 |
| AS33193US | HEART-OF-THE-ROCKIES - Heart of the Rockies Regional Medical Center | 256 | — | 1 |
| AS1428US | DRW-HOLDINGS - DRW Holdings, LLC | 256 | — | 1 |
| AS21706US | KHHTE - Kellogg, Huber, Hansen, Todd & Evans, PLLC | 256 | — | 1 |
| AS32532US | KMC-37-ASN - Kuakini Medical Center | 256 | — | 1 |
| AS401718US | HAULERS-INSURANCE - Haulers Insurance Company Inc. | 256 | — | 1 |
| AS395957US | POLARSEMI - Polar Semiconductor, LLC | 256 | — | 1 |
| AS11092US | HEVANET - Hevanet | 256 | — | 1 |
| AS29700US | CYPRESS-SEMICONDUCTOR - Infineon technologies Americas Corp | 256 | — | 1 |
| AS400920US | GRABIEN - Grabien Inc. | 256 | — | 1 |
| AS32395US | LNFCU-01 - L & N Federal Credit Union | 256 | — | 1 |
| AS399298US | HEALTHAXIS-AS - HealthAxis Group, LLC | 256 | — | 1 |
| AS18461US | BELL-ATL - Verizon Business | 256 | — | 1 |
| AS62629US | RESULTS - Results Physiotherapy | 256 | — | 1 |
| AS14662US | CSTONE-NET - Cornerstone Systems Inc. | 256 | — | 1 |
| AS14421US | THERAVANCE - Theravance Biopharma US, LLC | 256 | — | 1 |
| AS17243US | BYTENODE-AS - Byte Node LLC | 256 | 1 | 2 |
| AS396377US | FASTCLOUD - fastCLOUD | 256 | — | 1 |
| AS18631US | WDL-TECHNOLOGIES - WDL Technologies | 256 | — | 1 |
| AS54546US | FERRARI-NORTH-AMERICA - Ferrari North America, Inc. | 256 | — | 1 |
| AS276US | OTS-AS-276 - University of Texas System | 256 | — | 1 |
| AS401102US | WATCHFIRE-HQ-ASN-1 - Watchfire | 256 | — | 1 |
| AS14132US | BLUEMATRIX-AS-BLUEMATRIX-INC - Blue Matrix I LLC | 256 | — | 1 |
| AS16404US | ALBRIGHT-COLLEGE - Albright College | 256 | — | 1 |
| AS40713US | OCI-01 - Orbiting Code, Inc. | 256 | 4.1K | 2 |