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The rules of 1.357 extensions: registration period, transfer code, expiry and special requirements.
| Extension | Country | Period | Transfer code | After transfer | Renewal grace | Quarantine | DNSSEC | Special |
|---|---|---|---|---|---|---|---|---|
| .co.az | Azerbaijan | 1 year | From the provider | Expiry date stays the same | — | — | No | |
| .co.bi | Burundi | 1 to 10 years | From the provider | Expiry date stays the same | — | 5 days | Yes | |
| .co.bw | Botswana | 1 year | From the provider | Plus 1 year | — | — | No | |
| .co.bz | Belize | 1 to 10 years | From the provider | Plus 1 year | 42 days | 30 days | Yes | |
| .co.ci | Côte d’Ivoire | 1 year | From the provider | 1 year from the transfer date | — | — | No | |
| .co.cm | Cameroon | 1 to 9 years | From the provider | Expiry date stays the same | — | — | Yes | |
| .co.com | Generic | 1 to 10 years | From the provider | Plus 1 year | 42 days | 30 days | Yes | |
| .co.cr | Costa Rica | 1 to 5 years | From the provider | Plus 1 year | — | — | Yes | |
| .co.dm | Dominica | 1 to 10 years | From the provider | 1 year from the transfer date | — | 30 days | Yes | |
| .co.ee | Estonia | 1 to 10 years | From the provider | Plus 1 year | 42 days | 30 days | Yes | |
| .co.gg | Guernsey | 1 to 10 years | From the provider | Plus 1 year | 28 days | 12 days | Yes | |
| .co.gl | Greenland | 1 to 2 years | From the provider | 1 year from the transfer date | 42 days | 30 days | Yes | |
| .co.gy | Guyana | 1 to 5 years | From the provider | Plus 1 year | — | 30 days | Yes | |
| .co.hu | Hungary | 1 to 5 years | No transfer code needed | 1 year from the transfer date | — | 60 days | Yes | |
| .co.id | Indonesia | 1 to 10 years | From the provider | Plus 1 year | 42 days | 30 days | Yes | |
| .co.im | Isle of Man | 1 to 10 years | From the provider | Expiry date stays the same | — | — | No | |
| .co.in | India | 1 to 10 years | From the provider | Plus 1 year | 42 days | 30 days | Yes | |
| .co.ir | Iran | 1 to 5 years | No transfer code needed | Expiry date stays the same | — | 60 days | Yes | |
| .co.je | Jersey | 1 to 10 years | From the provider | Plus 1 year | 28 days | 12 days | Yes | |
| .co.jp | Japan | 1 year | No transfer code needed | Plus 1 year | — | 20 days | Yes | |
| .co.ke | Kenya | 1 year | From the provider | Expiry date stays the same | — | — | Yes | |
| .co.kr | South Korea | 1 to 10 years | From the provider | Plus 1 year | — | — | No | Limited to certain countries |
| .co.lc | St. Lucia | 1 to 10 years | From the provider | Plus 1 year | 42 days | 30 days | Yes | |
| .co.ma | Morocco | 1 year | From the provider | 1 year from the transfer date | — | 37 days | Yes | |
| .co.mg | Madagascar | 1 to 5 years | From the provider | Plus 1 year | — | 30 days | No | |
| .co.ms | Montserrat | 1 to 5 years | No transfer code needed | 1 year from the transfer date | — | 30 days | No | |
| .co.mu | Mauritius | 1 to 10 years | From the provider | Plus 1 year | 42 days | 30 days | Yes | |
| .co.mw | Malawi | 2 years | No transfer code needed | Expiry date stays the same | — | — | Yes | |
| .co.ni | Nicaragua | 1 year | No transfer code needed | Expiry date stays the same | — | — | Yes | |
| .co.nl | Generic | 1 year | From the provider | Expiry date stays the same | — | 40 days | Yes | |
| .co.no | Generic | 1 year | No transfer code needed | Expiry date stays the same | 90 days | 90 days | Yes | |
| .co.nz | New Zealand | 1 to 10 years | From the provider | Expiry date stays the same | — | 90 days | Yes | |
| .co.rs | Serbia | 1 to 10 years | From the provider | Expiry date stays the same | — | — | Yes | |
| .co.rw | Rwanda | 1 to 10 years | From the provider | Expiry date stays the same | — | 15 days | Yes | |
| .co.tt | Trinidad & Tobago | 3 years | No transfer code needed | Plus 1 year | — | — | Yes | Organisations only |
| .co.ug | Uganda | 1 to 5 years | No transfer code needed | Expiry date stays the same | — | — | Yes | |
| .co.uk | United Kingdom | 1 to 10 years | No transfer code needed | Expiry date stays the same | 30 days | 60 days | Yes | |
| .co.uz | Uzbekistan | 1 to 2 years | No transfer code needed | Expiry date stays the same | — | — | No | |
| .coach | Generic | 1 to 10 years | From the provider | Plus 1 year | 42 days | 30 days | Yes | |
| .codes | Generic | 1 to 10 years | From the provider | Plus 1 year | 42 days | 30 days | Yes | |
| .coffee | Generic | 1 to 10 years | From the provider | Plus 1 year | 42 days | 30 days | Yes | |
| .college | Generic | 1 to 10 years | From the provider | Plus 1 year | 42 days | 30 days | Yes | |
| .cologne | Generic | 1 to 10 years | From the provider | Plus 1 year | 42 days | 30 days | Yes | |
| .com | Generic | 1 to 10 years | From the provider | Plus 1 year | 42 days | 30 days | Yes | |
| .com.af | Afghanistan | 1 to 5 years | From the provider | Plus 1 year | — | 30 days | Yes | |
| .com.ag | Antigua & Barbuda | 1 to 10 years | From the provider | Plus 1 year | 42 days | 30 days | Yes | |
| .com.ai | Anguilla | 2 to 10 years | From the provider | Plus 1 year | 42 days | 30 days | Yes | |
| .com.al | Albania | 1 to 5 years | From the provider | 1 year from the transfer date | — | — | Yes | |
| .com.am | Armenia | 1 year | From the provider | Expiry date stays the same | — | — | No | |
| .com.ar | Argentina | 1 year | No transfer code needed | 1 year from the transfer date | — | — | Yes | Limited to certain countries |
Click an extension for all details. The data comes from our registrar and is updated weekly. The terms are explained in Comparing extensions. Comparing extensions →
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