Но переводить как почтовый адрес, тоже надо не одну стопку выпить.
Речь, видимо, о Post-nominal letters.

Letters After A Name?
Post-nominal letters (or post nominal titles) are the letters after your name to show that the holder has a granted or earned qualification, position of importance, degree, place of office, or another such accreditation. They can also be know as a name-suffix.
A person may have several different incidences of post-nominal letters. They are generally listed in order as follows:

Honours
Educational Degrees
Memberships to accredited professional organisations / societies