What are the rules for registering a .co domain name?
o A Domain Name can only contain characters [a-z, 0-9,-];
o A Domain Name must not consist of more than 63 characters;
o A Domain Name must not start or end with the - character;
o A Domain Name must not contain two - characters next to each other.
o Every Domain Name must be unique; it is impossible to register a Domain Name that is identical with an already existing Domain Name.
