| .cloud | Generic | ARUBA PEC S.p.A. | — | — |
| .club | Generic | Registry Services, LLC | — | — |
| .clubmed | Generic | Club Méditerranée S.A. | — | — |
| .coach | Generic | Binky Moon, LLC | — | — |
| .codes | Generic | Binky Moon, LLC | — | — |
| .coffee | Generic | Binky Moon, LLC | — | — |
| .college | Generic | XYZ.COM LLC | — | — |
| .cologne | Generic | dotKoeln GmbH | — | — |
| .com | Generic | VeriSign Global Registry Services | — | — |
| .commbank | Generic | COMMONWEALTH BANK OF AUSTRALIA | — | — |
| .community | Generic | Binky Moon, LLC | — | — |
| .company | Generic | Binky Moon, LLC | — | — |
| .compare | Generic | Registry Services, LLC | — | — |
| .computer | Generic | Binky Moon, LLC | — | — |
| .comsec | Generic | VeriSign, Inc. | — | — |
| .condos | Generic | Binky Moon, LLC | — | — |
| .construction | Generic | Binky Moon, LLC | — | — |
| .consulting | Generic | Dog Beach, LLC | — | — |
| .contact | Generic | Dog Beach, LLC | — | — |
| .contractors | Generic | Binky Moon, LLC | — | — |
| .cooking | Generic | Registry Services, LLC | — | — |
| .cool | Generic | Binky Moon, LLC | — | — |
| .corsica | Generic | Collectivité de Corse | — | — |
| .country | Generic | Internet Naming Co. | — | — |
| .coupon | Generic | Amazon Registry Services, Inc. | — | — |
| .coupons | Generic | Binky Moon, LLC | — | — |
| .courses | Generic | Registry Services, LLC | — | — |
| .cpa | Generic | American Institute of Certified Public Accountants | — | — |
| .credit | Generic | Binky Moon, LLC | — | — |
| .creditcard | Generic | Binky Moon, LLC | — | — |
| .creditunion | Generic | DotCooperation, LLC | — | — |
| .cricket | Generic | dot Cricket Limited | — | — |
| .crown | Generic | Crown Equipment Corporation | — | — |
| .crs | Generic | Federated Co-operatives Limited | — | — |
| .cruise | Generic | Viking River Cruises (Bermuda) Ltd. | — | — |
| .cruises | Generic | Binky Moon, LLC | — | — |
| .cuisinella | Generic | SCHMIDT GROUPE S.A.S. | — | — |
| .cymru | Generic | Nominet UK | — | — |
| .cyou | Generic | Shortdot SA | — | — |
| .dad | Generic | Charleston Road Registry Inc. | — | — |
| .dance | Generic | Dog Beach, LLC | — | — |
| .data | Generic | Dish DBS Corporation | — | — |
| .date | Generic | dot Date Limited | — | — |
| .dating | Generic | Binky Moon, LLC | — | — |
| .datsun | Generic | NISSAN MOTOR CO., LTD. | — | — |
| .day | Generic | Charleston Road Registry Inc. | — | — |
| .dclk | Generic | Charleston Road Registry Inc. | — | — |
| .dds | Generic | Registry Services, LLC | — | — |
| .deal | Generic | Amazon Registry Services, Inc. | — | — |
| .dealer | Generic | Intercap Registry Inc. | — | — |