Inter-registrar transfers may require a transfer authorization code or EPP key for each domain name being transferred. The code is generated by the current registrar and verified through the global registry for validity. No two codes are alike; you need the unique EPP code for each domain you are transferring.
NOTE: The code is not only alphanumeric and case-sensitive, but may include special characters (comma, bracket, parenthesis, etc).
To confirm the active list of which TLDs require Authorization Code or EPP key, please refer to the TLD reference chart at: