The overall decision of when a particular domain is back on the market will depend on the Internet Registry for the domain name extension.
- For any extensions ending in .uk, this will be Nominet.
- For top-level domains like .biz and .us, this will be GoDaddy Registry.
- For top-level domains like .com and .net, this will be Verisign.
- For second-level domains like .uk.com and .eu.com, this will be CentralNic.