Sometimes, you hust have to understand the cryptic codes used around the world of airline travel. The companies are using them, probably not just for the sake of being incomprehensible, but the result is the same. I recently found the right place to look for this information, a web site to search for all airline-related codes:
I used it to find the meaning of the two-letter IATA code of the company name in a flight numbers (CZ3572 is a flight of China Southern Airlines and MU2511 is another flight from China Eastern Airlines) because an assistant had booked me electronic tickets forgetting to tell me which counter I should go to register on the following day.