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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. | 218M | 24,346 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,303 |
| 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.
32,168 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 | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,996 |
| AS701US | UUNET - Verizon Business | 43.6M | 994 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 512 |
| — |
| 2 |
| AS25770US | SHRM - Society for Human Resource Management | 512 | — | 2 |
| AS36450US | UTSYSADM-AS-1 - University of Texas System Administration | 512 | — | 1 |
| AS27208US | DISCOVERY-ENERGY-LLC-01 - Discovery Energy, LLC | 512 | — | 2 |
| AS33377US | FHLBC - Federal Home Loan Bank of Chicago | 512 | — | 2 |
| AS396481US | SKYHI-1 - SkyHi Broadband | 512 | — | 2 |
| AS18622US | IVANET-YTO - IBASIS INC. | 512 | — | 2 |
| AS53572US | HNB - Hookers and Blow | 512 | — | 2 |
| AS54156US | CITY-OF-HUNTSVILLE - City of Huntsville | 512 | — | 2 |
| AS538US | DNIC-AS-00538 - Headquarters, USAISC | 512 | — | 2 |
| AS18955US | TWEA-AS - Treasury Wine Estates Americas | 512 | — | 1 |
| AS394040US | WELLS-ENTERPRISES - Wells Enterprises, Inc. | 512 | — | 2 |
| AS53709US | SPORTING-KC - ONGOAL, LLC | 512 | — | 1 |
| AS397065US | US-NJ - Hillside (Shared Services US) LLC | 512 | — | 2 |
| AS11932US | EDF-MAN-CAPITAL-INC - Breakwater | 512 | — | 2 |
| AS24865US | SMOTI-AS Keith Mitchell | 512 | — | 1 |
| AS393888US | SQUAR-12-AS-1 - SQUARETRADE, INC. | 512 | — | 2 |
| AS14635US | VERMONT-STUDENT-ASSISTANCE-CORPORATION - Vermont Student Assistance Corporation | 512 | — | 2 |
| AS36709US | OPTIMA - NP Information Systems | 512 | — | 2 |
| AS399238US | WELLS-NV-BEEHIVE - Satview Broadband LTD | 512 | — | 2 |
| AS25836US | STERLING-JEWELERS - Sterling Jewelers Inc. | 512 | — | 2 |
| AS395034US | ZTHERNET - Zthernet, LLC | 512 | — | 2 |
| AS40907US | ATL-699-40907 - Access TeleCare, LLC | 512 | 2 | 4 |
| AS26378US | ADORAMA - ADORAMA | 512 | — | 2 |
| AS53858US | BAYCARE-HEALTH-SYSTEM - Baycare Health System, Inc. | 512 | — | 1 |
| AS5790US | NETMARKET - Trilegiant Corporation | 512 | — | 2 |
| AS63326US | CSQUARED - C Squared Systems, LLC | 512 | 16 | 2 |
| AS201445US | Zerval-Network Zerval Network LLC | 512 | 276 | 8 |
| AS32481US | OSCEOLA - Osceola County | 512 | — | 2 |
| AS11929US | MFAOIL - MFA Oil Company | 512 | — | 2 |
| AS62531US | PIH2 - PIH Health, Inc. | 512 | — | 1 |
| AS401191US | BSOSL-ASN-01 - Blue Star Operations Services LLC | 512 | — | 1 |
| AS14528US | SHOTSPOTTER-01 - SHOTSPOTTER, INC. | 512 | — | 2 |
| AS36462US | TGNA-KHOU - TEGNA Inc. | 512 | — | 2 |
| AS22263US | NRHSAS - Norman Regional Health System | 512 | — | 1 |
| AS29822US | ARCHER1 - Archer and Greiner | 512 | — | 2 |
| AS20203US | FIRST-FINANCIAL-BANK-NA - First Financial Bank NA | 512 | — | 2 |
| AS394049US | UWHCA - University of Wisconsin Hospital and Clinics | 512 | — | 2 |
| AS46623US | FISHBACK - Fishback Financial Corporation | 512 | — | 2 |
| AS401468US | WVW - WvW | 512 | 257 | 4 |
| AS36581US | WJCL-TV - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS112US | AS112-PROJECT - DNS-OARC | 512 | 2 | 4 |
| AS30522US | MNMC - Mount Nittany Medical Center | 512 | — | 2 |
| AS54385US | TOLLESON - City of Tolleson | 512 | — | 2 |
| AS393236US | OCTANNER - O. C. TANNER COMPANY | 512 | — | 2 |
| AS18598US | CEQUINT-INC - Transaction Network Services, Inc. | 512 | — | 2 |
| AS40877US | XULA - Xavier University of Louisiana | 512 | — | 2 |