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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 |
| 3 |
| 5 |
| AS54930US | TIER2-TECHNOLOGIES - Tier2 Technologies | 512 | 256 | 3 |
| AS10905US | MTVI-AS - Mobile Technology Ventures Inc | 512 | — | 2 |
| AS1857US | DISN-PILOTNET3 - RTX BBN Technologies, Inc. | 512 | — | 2 |
| AS17109US | CALITECH - Calitech | 512 | — | 2 |
| AS62647US | GFFCU - Grow Financial Federal Credit Union | 512 | — | 2 |
| AS29864US | SPORTSMANS-WAREHOUSE - Sportsman's Warehouse, Inc. | 512 | — | 2 |
| AS400447US | APOG-WAYLAND - Apogee Telecom Inc. | 512 | — | 2 |
| AS16719US | NASD - Financial Industry Regulatory Authority, Inc. | 512 | — | 2 |
| AS397297US | AHL-DFW1-01 - AVENU HOLDINGS, LLC | 512 | — | 2 |
| AS398574US | COMMONWEALTH-CHARTER-ACADEMY - Commonwealth Charter Academy | 512 | — | 2 |
| AS54468US | CHMCA - Children's Hospital Medical Center of Akron | 512 | — | 2 |
| AS40600US | STRIDEBANK-ASN - Stride | 512 | — | 2 |
| AS25964US | HCBE-17 - Henry County Board of Education | 512 | — | 2 |
| AS5721US | NDU-NET - National Defense University | 512 | — | 2 |
| AS396213US | USCUPSTATE - USC Upstate | 512 | — | 2 |
| AS400045US | DUMONT-TELEPHONE-COMPANY - Dumont Telephone Company | 512 | 256 | 3 |
| AS46364US | LAKEVIEW-LOAN-SERVICING - Lakeview Loan Servicing, LLC | 512 | — | 2 |
| AS36173US | KCI - Kinetic Concepts, Inc. | 512 | — | 2 |
| AS11893US | LOLIGO-ASN - Loligo Cache Systems, Inc. | 512 | — | 2 |
| AS39990US | BCG - Boulder County Government | 512 | — | 2 |
| AS53483US | RSP - ReSource Pro, LLC | 512 | — | 2 |
| AS398976US | ALT-1 - BELLE HOLDINGS LLC | 512 | — | 2 |
| AS396538US | NORTHSITE-DATA - Northsite Data, LLC | 512 | — | 1 |
| AS53858US | BAYCARE-HEALTH-SYSTEM - Baycare Health System, Inc. | 512 | — | 1 |
| AS25770US | SHRM - Society for Human Resource Management | 512 | — | 2 |
| AS30403US | EL-ROCHESTER-NY - Ellucian Company LP | 512 | — | 2 |
| AS7034US | PHIREPHLY-DESIGN - PhirePhly Design | 512 | 2 | 4 |
| AS26282US | SYMANTEC-US - Avago Technologies U.S. Inc. | 512 | 2 | 4 |
| AS401855US | FTOP - Maximize Marketing Agency, Inc. | 512 | — | 2 |
| AS401617US | VIETTEL - Viettell | 512 | 4.1K | 3 |
| AS19810US | ASNBLK-VTLA2 - NTT Global Networks Incorporated | 512 | — | 2 |
| AS14570US | ANSIBLE-NTP - Ansible Networks, LLC | 512 | — | 2 |
| AS394528US | TRUWEST-CREDIT-UNION - Truwest Credit Union | 512 | — | 2 |
| AS36596US | FACC - Florida Association of Court Clerks, Inc. | 512 | — | 2 |
| AS21974US | FMIC - Frankenmuth Mutual Insurance Company | 512 | — | 2 |
| AS54492US | CAREFIRST-BCBS-01 - CareFirst Management Company, LLC | 512 | — | 1 |
| AS397964US | HYVE-MANAGED-HOSTING - Hyve Managed Hosting Corp Inc | 512 | 2 | 2 |
| AS14409US | MCSI - Myers Computer Service, Inc. | 512 | — | 2 |
| AS14448US | 14448 - High Point University | 512 | — | 2 |
| AS21876US | THE-SAVE-MART-COMPANIES - The Save Mart Companies | 512 | — | 2 |
| AS18952US | BVR-AS - Big Valley of Pomo Indians of the Big Valley Rancheria California | 512 | — | 2 |
| AS46644US | SOCIAL-BLADE - Social Blade LLC | 512 | 2 | 4 |
| AS399426US | ASTSUL-ASN-01 - Applied Satellite Technology Systems US LLC | 512 | — | 1 |
| AS32606US | MARCUS-CORP - The Marcus Corporation | 512 | — | 2 |
| AS395683US | INVESTCLOUD - InvestCloud, Inc | 512 | — | 1 |
| AS63269US | BOOTBARN - Boot Barn Inc. | 512 | — | 2 |