| .닷넷 | Generic | VeriSign Sarl | — | — |
| .닷컴 | Generic | VeriSign Sarl | — | — |
| .삼성 | Generic | SAMSUNG SDS CO., LTD | — | — |
| .aaa | Generic | American Automobile Association, Inc. | — | — |
| .aarp | Generic | AARP | — | — |
| .abb | Generic | ABB Ltd | — | — |
| .abbott | Generic | Abbott Laboratories, Inc. | — | — |
| .abbvie | Generic | AbbVie Inc. | — | — |
| .abc | Generic | Disney Enterprises, Inc. | — | — |
| .able | Generic | Able Inc. | — | — |
| .abogado | Generic | Registry Services, LLC | — | — |
| .abudhabi | Generic | Abu Dhabi Systems and Information Centre | — | — |
| .academy | Generic | Binky Moon, LLC | — | — |
| .accenture | Generic | Accenture plc | — | — |
| .accountant | Generic | dot Accountant Limited | — | — |
| .accountants | Generic | Binky Moon, LLC | — | — |
| .aco | Generic | ACO Severin Ahlmann GmbH & Co. KG | — | — |
| .actor | Generic | Dog Beach, LLC | — | — |
| .ads | Generic | Charleston Road Registry Inc. | — | — |
| .adult | Generic | ICM Registry AD LLC | — | — |
| .aeg | Generic | Aktiebolaget Electrolux | — | — |
| .aetna | Generic | Aetna Life Insurance Company | — | — |
| .afl | Generic | Australian Football League | — | — |
| .africa | Generic | ZA Central Registry NPC trading as Registry.Africa | — | — |
| .agakhan | Generic | Fondation Aga Khan (Aga Khan Foundation) | — | — |
| .agency | Generic | Binky Moon, LLC | — | — |
| .aig | Generic | American International Group, Inc. | — | — |
| .airbus | Generic | Airbus S.A.S. | — | — |
| .airforce | Generic | Dog Beach, LLC | — | — |
| .airtel | Generic | Bharti Airtel Limited | — | — |
| .akdn | Generic | Fondation Aga Khan (Aga Khan Foundation) | — | — |
| .alibaba | Generic | Alibaba Group Holding Limited | — | — |
| .alipay | Generic | Alibaba Group Holding Limited | — | — |
| .allfinanz | Generic | Allfinanz Deutsche Vermögensberatung Aktiengesellschaft | — | — |
| .allstate | Generic | Allstate Fire and Casualty Insurance Company | — | — |
| .ally | Generic | Ally Financial Inc. | — | — |
| .alsace | Generic | REGION GRAND EST | — | — |
| .alstom | Generic | ALSTOM | — | — |
| .amazon | Generic | Amazon Registry Services, Inc. | — | — |
| .americanexpress | Generic | American Express Travel Related Services Company, Inc. | — | — |
| .americanfamily | Generic | AmFam, Inc. | — | — |
| .amex | Generic | American Express Travel Related Services Company, Inc. | — | — |
| .amfam | Generic | AmFam, Inc. | — | — |
| .amica | Generic | Amica Mutual Insurance Company | — | — |
| .amsterdam | Generic | Gemeente Amsterdam | — | — |
| .analytics | Generic | Campus IP LLC | — | — |
| .android | Generic | Charleston Road Registry Inc. | — | — |
| .anquan | Generic | Beijing Qihu Keji Co., Ltd. | — | — |
| .anz | Generic | Australia and New Zealand Banking Group Limited | — | — |
| .aol | Generic | Yahoo Inc. | — | — |