DZMM is a Philippine based radio station owned by Manila Broadcasting Company. It has its studio in CCP Complex, Pasay and transmitter in Malanday, Valenzuela. The very first program aired in the year 1939 and since then it broadcasts in all across Philippines. The station works in an assigned frequency of 666 kilo Hertz. DZMM is 24 hours radio channel except on some religious day (such as Holy Week and Easter) and the first Saturday of the month. The radio station after work for 33 years at 650 Kilo Hertz the channel frequency then later changed to 666. The contact information like email address, telephone number, website and postal cum official address of Dzrh is mentioned in below section.