| .ferrari | Generic | Fiat Chrysler Automobiles N.V. | — | — |
| .ferrero | Generic | Ferrero Trading Lux S.A. | — | — |
| .fi | Country Code | Finnish Transport and Communications Agency Traficom | 🇫🇮Finland | — |
| .fidelity | Generic | Fidelity Brokerage Services LLC | — | — |
| .fido | Generic | Rogers Communications Canada Inc. | — | — |
| .film | Generic | Motion Picture Domain Registry Pty Ltd | — | — |
| .final | Generic | Núcleo de Informação e Coordenação do Ponto BR - NIC.br | — | — |
| .finance | Generic | Binky Moon, LLC | — | — |
| .financial | Generic | Binky Moon, LLC | — | — |
| .fire | Generic | Amazon Registry Services, Inc. | — | — |
| .firestone | Generic | Bridgestone Licensing Services, Inc. | — | — |
| .firmdale | Generic | Firmdale Holdings Limited | — | — |
| .fish | Generic | Binky Moon, LLC | — | — |
| .fishing | Generic | Registry Services, LLC | — | — |
| .fit | Generic | Registry Services, LLC | — | — |
| .fitness | Generic | Binky Moon, LLC | — | — |
| .fj | Country Code | The University of the South Pacific
IT Services | 🇫🇯Fiji | — |
| .fk | Country Code | Falkland Islands Government | 🇫🇰Falkland Islands | — |
| .flickr | Generic | Flickr, Inc. | — | — |
| .flights | Generic | Binky Moon, LLC | — | — |
| .flir | Generic | FLIR Systems, Inc. | — | — |
| .florist | Generic | Binky Moon, LLC | — | — |
| .flowers | Generic | XYZ.COM LLC | — | — |
| .fly | Generic | Charleston Road Registry Inc. | — | — |
| .fm | Country Code | FSM Telecommunications Corporation | 🇫🇲Micronesia | — |
| .fo | Country Code | FO Council | 🇫🇴Faroe Islands | — |
| .foo | Generic | Charleston Road Registry Inc. | — | — |
| .food | Generic | Internet Naming Co. | — | — |
| .football | Generic | Binky Moon, LLC | — | — |
| .ford | Generic | Ford Motor Company | — | — |
| .forex | Generic | Dog Beach, LLC | — | — |
| .forsale | Generic | Dog Beach, LLC | — | — |
| .forum | Generic | Fegistry, LLC | — | — |
| .foundation | Generic | Public Interest Registry (PIR) | — | — |
| .fox | Generic | FOX Registry, LLC | — | — |
| .fr | Country Code | Association Française pour le Nommage Internet en Coopération (A.F.N.I.C.) | 🇫🇷France | — |
| .free | Generic | Amazon Registry Services, Inc. | — | — |
| .fresenius | Generic | Fresenius Immobilien-Verwaltungs-GmbH | — | — |
| .frl | Generic | FRLregistry B.V. | — | — |
| .frogans | Generic | OP3FT | — | — |
| .frontier | Generic | Frontier Communications Corporation | — | — |
| .ftr | Generic | Frontier Communications Corporation | — | — |
| .fujitsu | Generic | Fujitsu Limited | — | — |
| .fun | Generic | Radix Technologies Inc. | — | — |
| .fund | Generic | Binky Moon, LLC | — | — |
| .furniture | Generic | Binky Moon, LLC | — | — |
| .futbol | Generic | Dog Beach, LLC | — | — |
| .fyi | Generic | Binky Moon, LLC | — | — |
| .ga | Country Code | Agence Nationale des Infrastructures Numériques et des Fréquences (ANINF) | 🇬🇦Gabon | — |
| .gal | Generic | Asociación puntoGAL | — | — |