The Contact ID identifies a contact, and it is unique, meaning that there are no identical contact IDs at Registry Services.
According to RFC 4933, command "<contact:create/>" must include the contact ID, which is why the registrar creates its own contact ID. However, The Swedish Internet Foundation has rules concerning the "<contact:ID/>". These rules are:
- Minimum length 3 characters
- Maximum length is 16 characters
- Must contains letters (a-z, A-Z) or digits (0-9) or dash (-)
To check whether a contact ID is already in use, enter the command "<contact: check />" to view several different contact IDs, and use the first available contact ID.
