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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 |
| — |
| 1 |
| AS397600US | BANKOZK-DALLAS - Bank OZK | 512 | — | 2 |
| AS54262US | US-CERT-01 - CERTUSOFT INC | 512 | — | 2 |
| AS397555US | TGNA-KWES - TEGNA Inc. | 512 | — | 2 |
| AS401869US | SSL-GLOBAL - Shine Summit LLC | 512 | — | 2 |
| AS13566US | UCCSDA - Upper Columbia Conference / SDA | 512 | — | 2 |
| AS40040US | LAITRAM-INTERNET - Laitram L.L.C. | 512 | — | 2 |
| AS3967US | NSM350 - Nationstar Mortgage, LLC | 512 | — | 2 |
| AS400372US | ID-CL-01 - Murphy's Bowl LLC | 512 | — | 2 |
| AS398919US | HCBOCC-AS - Hillsborough County Board of Commissioners | 512 | — | 2 |
| AS63164US | TGNA-WWL-WUPL - TEGNA Inc. | 512 | — | 2 |
| AS23182US | GREENBRIER-AS - THE GREENBRIER COMPANIES, INC. | 512 | — | 1 |
| AS20339US | RR-CENTRAL - Rosenthal & Rosenthal Inc. | 512 | — | 2 |
| AS394697US | VSLR - Vivint Solar | 512 | — | 1 |
| AS16653US | CVENT - Cvent, Inc. | 512 | 1 | 3 |
| AS55099US | HRBL-SLC-INTERNET-BGP - Herbalife International of America, Inc. | 512 | — | 2 |
| AS17031US | WINSTON-SALEM-SCHOOLS - Winston-Salem/Forsyth County Schools | 512 | — | 1 |
| AS401256US | WKKC-NETWORKEDGE-ASN - WK Kellogg Business Services LLC | 512 | — | 2 |
| AS395772US | AHC-AS - Augusta Health Care, Inc | 512 | — | 2 |
| AS40120US | SE-BR-AS-01 - TAC Americas, Inc. | 512 | — | 1 |
| AS23310US | TASTYLIME - TASTY LIME | 512 | — | 2 |
| AS23239US | JAVELINA - Irongrove LLC | 512 | 2 | 4 |
| AS397892US | REXELUSA - Rexel | 512 | — | 2 |
| AS14045US | CHANGEHEALTHCARE - UnitedHealth Group Incorporated | 512 | — | 2 |
| AS11327US | NCI-GROUP-INC - NCI Group, Inc. | 512 | — | 2 |
| AS398737US | INTELLIVOICE - IntelliVoice | 512 | — | 2 |
| AS400503US | DAN-SMITH-LLC - Dan Smith LLC | 512 | 32 | 4 |
| AS17189US | MITSUBISHI-UFJ-TRUST-BANKING - Mitsubishi UFJ Trust & Banking Corporation | 512 | — | 2 |
| AS398204US | CITY-OF-STOCKTON - City of Stockton | 512 | — | 2 |
| AS397808US | FAXAGE-01 - FAXAGE | 512 | — | 2 |
| AS19395US | BCCC-COLLEGE-I2 - Bucks County Community College | 512 | — | 2 |
| AS11184US | EG-USEAST - EXPEDIA, INC | 512 | — | 2 |
| AS393542US | PLATEAU-GROUP - The Plateau Group, Inc. | 512 | — | 2 |
| AS62557US | AUSTALUSA - Austal USA LLC | 512 | — | 2 |
| AS395105US | JDAWI2 - Blue Yonder, Inc | 512 | — | 2 |
| AS26907US | JFG-RACINE-ASN - Johnson Financial Group, Inc. | 512 | — | 2 |
| AS208188US | PSNL-208188 - Puget Sound Networks, LLC | 512 | 1 | 3 |
| AS63376US | TOUCHTONE-CUSTS - TouchTone Communications | 512 | — | 2 |
| AS54128US | POKEMON-BELLEVUE - The Pokemon Company International, Inc. | 512 | — | 2 |
| AS14012US | PNMAC1 - Private National Mortgage Acceptance Company LLC | 512 | — | 2 |
| AS400768US | MMC - Minuteman | 512 | 4 | 5 |
| AS400294US | PPI-TREMONT-01 - Precision Planting LLC | 512 | — | 2 |
| AS396882US | N3XTWORK - N3XTWORK LLC | 512 | — | 2 |
| AS395715US | COMSOL - Communication Sales & consulting, LLC | 512 | — | 1 |
| AS399717US | NU - Newman University, Inc. | 512 | — | 2 |
| AS203990US | acc_eu Accertify LLC | 512 | — | 2 |
| AS22337US | DTBNET - DVS Solutions | 512 | — | 1 |