What does MUB stand for?

Maun - Botswana - Airport symbol (OAG)

Mubi - Language code (ETLW)

MultiUse Bearer service (TELEC)

Murray Boat Co., Prosperity, SC - Manufacturer code for watercraft hull identification number (USCG)

University of Maryland, Baltimore County Campus, Catonsville, MD - OCLC symbol (OCLC)