Some TLDs have specific rules and requirements for registration, transfer and renewal. Here you can check the sub-pages for detailed information related to TLDs, which are under a special regulation.
Here you can find the specific rules and requrements for certain domain names. These rules apply for (but not limited to) Domain Name Registration, Domain Name Renewal and Domain Name Transfer. You can also check the Special ccTLD (Country-Code Top-Level Domains) Requirements for the domain names, supported by ClouDNS.