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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. | 218M | 24,543 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,304 |
| 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.
32,174 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,884 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,999 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,345 |
| 256 |
| — |
| 1 |
| AS32658US | PINELLAS-COUNTY-SO - Pinellas County Government | 256 | — | 1 |
| AS396182US | VOIGTINDELECT-A - Voigt Industrial Electronics LLC | 256 | — | 1 |
| AS402285US | MATTHEW - Matthew Daniel Brown LLC | 256 | — | 1 |
| AS402059US | TRSASN01 - Teachers' Retirement System of the City of New York | 256 | — | 1 |
| AS395673US | ALABAMA-LIGHTWAVE - ALABAMA LIGHTWAVE, INC. | 256 | 256 | 2 |
| AS397968US | BBC-ASN - SIMPLE CLOUD SOLUTION LLC | 256 | 2 | 3 |
| AS32730US | NAHQPU - LG CNS America Inc. | 256 | — | 1 |
| AS32721US | WESBANCO - WesBanco Bank, Inc. | 256 | — | 1 |
| AS26147US | QTS-DEN1 - Quality Technology Services, LLC | 256 | — | 1 |
| AS395286US | BELOITHEALTHSYSTEM - Beloit Health System, Inc. | 256 | — | 1 |
| AS27558US | FAR-ASN - Florida Assoc of Realtors | 256 | — | 1 |
| AS400484US | NMC-1441 - Natividad Medical Center | 256 | — | 1 |
| AS27019US | BALLNET - Ball Horticultural Company | 256 | — | 1 |
| AS397489US | MATTHEWS-209 - Matthews Book Company | 256 | — | 1 |
| AS54205US | STARWOOD-STAMFORD - Marriott International, Inc. | 256 | — | 1 |
| AS397730US | MILDPANIC2 - coresdev, LLC | 256 | 32 | 3 |
| AS63312US | BUTTERNUT-ASN - Community Financial System, Inc. | 256 | — | 1 |
| AS19415US | PAUL-BUNYAN-TECHNOLOGIES-01 - Paul Bunyan Technologies, LLC | 256 | 256 | 2 |
| AS394250US | PDS-DC1 - Pacific Dental Services | 256 | — | 1 |
| AS398099US | BVFNET - Bay View Funding | 256 | 16 | 2 |
| AS402336US | CHICFINDS - CHICFINDS | 256 | 1 | 2 |
| AS395825US | CRG-AS - Cape Radiology Group | 256 | — | 1 |
| AS63241US | GLP - Global Liquidity Partners, LLC | 256 | — | 1 |
| AS54705US | FRANKCRUM - FrankCrum | 256 | — | 1 |
| AS63461US | DFA-INTERNET - Dean Foods Company | 256 | — | 1 |
| AS23527US | CHRISTCATHEDRALCA - Christ Catholic Cathedral Corporation | 256 | — | 1 |
| AS401270US | TVH-PARTS-US - TVH Parts Co. | 256 | — | 1 |
| AS54196US | VERABRADLEYDESIGNS - Vera Bradley Designs, INC. | 256 | — | 1 |
| AS22470US | NBME - National Board of Medical Examiners | 256 | — | 1 |
| AS32602US | CORP-HDQTRS - ROI Solutions, LLC | 256 | — | 1 |
| AS399317US | GCPHD-CBH - Columbia Basin Hospital | 256 | — | 1 |
| AS399749US | AS-RTI-01 - Restaurant Technologies, Inc. | 256 | — | 1 |
| AS399037US | FB-01 - FOCUS Brands | 256 | — | 1 |
| AS62803US | UTDAS01 - UPTODATE, Inc. | 256 | — | 1 |
| AS42037US | Mozilla-Berlin Mozilla Corporation | 256 | 1 | 2 |
| AS394163US | CLOUD-XPRESS - Cloud Xpress | 256 | — | 1 |
| AS47059US | YORKHOSPITAL - York Hospital | 256 | — | 1 |
| AS36719US | MMU-53-AS-NET - Mount Mercy University | 256 | 1 | 2 |
| AS11695US | THESTREET-DOT-COM - TheStreet.Com | 256 | — | 1 |
| AS62750US | LIBERTYMEDIA - Liberty Media Corporation | 256 | — | 1 |
| AS30458US | CMHC-LEX-01 - CLARK Material Handling Company | 256 | — | 1 |
| AS13699US | SWFLAFC - SWF Associates in Podiatric Medicine & Surgery | 256 | 1 | 2 |
| AS26573US | NY-DC - Luxoft USA Inc | 256 | — | 1 |
| AS26510US | FTCH-HQ-ASN - Fishbeck, Thompson, Carr & Huber, Inc. | 256 | — | 1 |
| AS393502US | XL-19 - Zenlayer Inc | 256 | — | 1 |
| AS399451US | MSDLT-ASN-01 - METROPOLITAN SCHOOL DISTRICT OF LAWRENCE TOWNSHIP | 256 | — | 1 |