Q 92: Have all the Messengers been mentioned in the Glorious Qur'an?
A--- Allah the Almighty related to us from their news what suffices us and what is enough for us to take admonition and lessons. Then He, Almighty Allah, says: {And Messengers We have mentioned to you before, and Messengers We have not mentioned to you}. (An-Nisa', 164)
Thereupon, we must believe in all of them. We must believe in those who were mentioned and those who were not.
Reference: 200 FAQ On Muslims Belief - Shiekh Hafiz Ibn Ahmed Al Hakami