Well, in SATB music, given a choice I'll sing the tenor line. To answer the question straight as set, my vocal range (on a good day, after a good warm up with my singing teacher) is a tone short of 4 octaves. Start from the G below the C below middle, and work up to the F above C above middle. It has to be a good day, though, but tenor 'top C' is easy within range most days.

Oh, and unlike most tenors, I can do a reasonable counter tenor/choral alto.

best regards