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| Introduced | 3 September 1991 |
|---|---|
| TLD type | Country code top-level domain |
| Status | Active |
| Registry | NicAg |
| Sponsor | None |
| Intended use | Entities connected with  Antigua and Barbuda |
| Actual use | Sees some use, most of which is unrelated to Antigua and Barbuda; used largely by companies in German-speaking countries where AG has a special meaning in company names, though its use in Germany is restricted by court order |
| Registration restrictions | None |
| Structure | Names can be registered directly at the second level; third-level registrations are also available under some second-level labels |
| Documents | Registration terms and conditions |
| Dispute policies | UDRP |
| DNSSEC | Yes |
| Registry website | Nic.ag |
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.ag is the Internet country code top-level domain (ccTLD) for Antigua and Barbuda.