When your purchase an ARCHLine.XP LT license, you receive an email from Cadline, or local reseller that contains your license details, which include the serial number.

If your serial number starts with 80 or 36, then you purchased your license directly from Cadline.

If your license starts with anything else, then your license comes from a reseller.

 

LT serial number start with AMAZON or similar CADLINE DISTRIBUTORS
Single-user 80 36 Country calling code
Network 36 Country calling code
Non-Profit 97 97
TRIAL 960002