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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. | 218.1M | 24,635 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,306 |
| 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 | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,003 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,360 |
| 256 |
| 257 |
| 3 |
| AS398339US | PRIME-NET-15-CA - PrimeNet, Inc | 256 | — | 1 |
| AS62873US | SEQ-NET - Sequris Group, LLC | 256 | — | 1 |
| AS394751US | ND-LEHI - NetDocuments | 256 | — | 1 |
| AS40451US | ASN-BOP - Board of Pensions of the Evangelical Lutheran Church in America | 256 | — | 1 |
| AS46995US | JUMP-WIRELESS - Jump Wireless LLC | 256 | — | 1 |
| AS26708US | CCS-AS - Center for Computing Sciences | 256 | — | 1 |
| AS32219US | SHS-AS-1 - Sparrow Health System | 256 | — | 1 |
| AS19417US | CENTR-65-ASN - Centra-Larm Monitoring, Inc. | 256 | — | 1 |
| AS14501US | ENTERPRISECOMMUNITY - Enterprise Business Partners, LLC | 256 | — | 1 |
| AS393998US | EGV-BGP - Elk Grove Village Police Department | 256 | — | 1 |
| AS29891US | NCCWO-ASN1-VZBLVL3CMCST - National Cable Communications LLC | 256 | — | 1 |
| AS55123US | 37589 - Brilliant Jewelers/MJJ Inc. | 256 | — | 1 |
| AS53417US | RUDOLPHS-INC - Rudolph's, Inc. | 256 | — | 1 |
| AS54998US | SJCHS-SAV-GA - St. Josephs/Candler Health System, Inc. | 256 | — | 1 |
| AS402531US | SMC-915 - UNIVERSAL | 256 | — | 1 |
| AS16901US | MUTUAL - Mutual of Enumclaw Insurance Company | 256 | — | 1 |
| AS5641US | TVH-289 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS12081US | GREENHECK - Greenheck Fan | 256 | — | 1 |
| AS22915US | ATAS-01 - Acuity Technologies LLC | 256 | 1 | 2 |
| AS401566US | MONTVIRIDIAN-01 - Montviridian LLC | 256 | 4.1K | 2 |
| AS396210US | AAAHC-HQ - Accreditation Association for Ambulatory Health Care, Inc. | 256 | — | 1 |
| AS13599US | 13599 - Eisai Inc. | 256 | — | 1 |
| AS7761US | AS-350E - Morningstar, Inc. | 256 | — | 1 |
| AS18512US | YBP-AS - Yankee Book Peddler | 256 | — | 1 |
| AS27339US | HRL-LAX-01 - HRL Laboratories, LLC | 256 | — | 1 |
| AS26759US | SAGOFIBER-01 - Sago Fiber LLC | 256 | 65.5K | 2 |
| AS400057US | UPSTATE-NIAGARA-COOP-2021 - Upstate Niagara Cooperatives | 256 | — | 1 |
| AS395847US | MTHSD207 - Maine Township High School District 207 | 256 | — | 1 |
| AS399789US | LYFT-CORP - Lyft Inc | 256 | — | 1 |
| AS54093US | NORTHERN-LIGHT-MAYO-HOSPITAL - Eastern Maine Healthcare Systems | 256 | — | 1 |
| AS398366US | LINKUP - Linkup Communications Corporation | 256 | — | 1 |
| AS395841US | TAMCLOUD - tamCloud, Inc. | 256 | 4.1K | 2 |
| AS11819US | NF-SMITH-ASSOCIATES - Smith & Associates | 256 | — | 1 |
| AS62796US | PRISMSYSTEMS-1 - Prism Systems Inc | 256 | — | 1 |
| AS11009US | CARLOWUNIV - Carlow University | 256 | — | 1 |
| AS16386US | PROGRESSIVEPRODUCE - Progressive Produce Corporation | 256 | — | 1 |
| AS399482US | PDX - Blurb, Inc. | 256 | — | 1 |
| AS62867US | ALDINEISD-ASN01 - Aldine Independent School District | 256 | — | 1 |
| AS399694US | BRTNBB-TX01 - BRIGHTON BROADBAND INC. | 256 | 65.5K | 2 |
| AS19348US | CITY-OF-BRENTWOOD---TENNESSEE - City of Brentwood | 256 | — | 1 |
| AS397812US | LIT-CLOUD-01 - Live Information Technology Consulting Group, LLC | 256 | — | 1 |
| AS26988US | ADAGE-TECH - Adage Technologies, Inc | 256 | 2 | 3 |
| AS62739US | US-KONTIKI - Kollective Technology, Inc. | 256 | — | 1 |
| AS398637US | NMLEGIS - Legislative Council Service | 256 | — | 1 |
| AS32764US | CPN - CSN Support Services | 256 | 1 | 2 |
| AS393739US | AJN-DC-USA - Al Jazeera International (USA), Inc. | 256 | — | 1 |