Top
level
domain
|
Second
level
domain | Use |
| .gov | .whitehouse | Presidential residence (White House) |
| .ustr | USTR (Office of the United States Trade Representative) |
| .house | United States House of Representatives |
| .senate | United States Senate |
| .usda | USDA (United States Department of Agriculture) |
| .commerce | United States Department of Commerce |
| .census | Bureau of the Census |
| .noaa | National Oceanic and Atmospheric Administration |
| .nist | NIST (National Institute of Standards and Technology) |
| .ntis | NTIS (National Technical Information Service) |
| .uspto | PTO (The United States Patent and Trademark Office) |
| .defense | DoD (United States Department of Defense) |
| .ed | United States Department of Education |
| .osti | OSTI (Office of Scientific and Technical Information) |
| .fda | FDA (United States Food and Drug Administration) |
| .nih | NIH (National Institutes of Health) |
| .cdc | CDC (Centers for Disease Control and Prevention) |
| .doi | DOI (United States Department of the Interior) |
| .usgs | USGS (United States Geological Survey) |
| .blm | BLM (United States Bureau of Land Management) |
| .justice | DOJ (Department of Justice) |
| .fbi | FBI (Federal Bureau of Investigation) |
| .ncjrs | NCJRS (National Criminal Justice Reference Service) |
| .dol | United States Department of Labor |
| .state | United States Department of State |
| .dot | DOT (United States Department of Transportation) |
| .treasury | United States Department of the Treasury |
| .fedstats | Federal Interagency Council on Statistical Policy |
| .gao | GAO (United States Government Accountability Office) |
| .nasa | NASA (National Aeronautics and Space Administration) |
| .archives | NARA (The U.S. National Archives and Records Administration) |
| .cftc | CFTC (Commodity Futures Trading Commission) |
| .fcc | FCC (Federal Communications Commission) |
| .copyright | United States Copyright Office |
| .fec | FEC (Federal Election Commission) |
| .fema | FEMA (Federal Emergency Management Agency) |
| .epa | EPA (Environmental Protection Agency) |
| .exim | Ex-Im Bank (Export-Import Bank of the United States) |
| .ffiec | FFIEC (Federal Financial Institutions Examination Council) |
| .gsa | GSA (General Services Administration) |
| .fhfa | Federal Housing Finance Agency |
| .cia | CIA (Central Intelligence Agency) |
| .bbg | BBG (Broadcasting Board Governors) |
| .usitc | ITC (International Trade Commission) |
| .imls | IMLS (Institute of Museum and Library Services) |
| .federalreserve | FRB (Federal Reserve Board of Governors) |
| .nsf | NSF (National Science Foundation) |
| .sec | SEC (Securities and Exchange Commission) |
| .sba | SBA (Small Business Administration) |
| .ssa | SSA (Social Security Administration) |
| .ftc | FTC (Federal Trade Commission) |
| .ustda | USTDA (United States Trade and Development Agency) |
| .ntsb | NTSB (National Transportation Safety Board) |
| .uscourts | United States Courts |
| .fjc | Federal Judicial Center |
| .supremecourt | Supreme Court of the United States |