I've tried to see at home, when I didn't have much vocal training. But, I COULD get a low F on a guitar (1st fret) and could get NEARLY 3 octaves above that. Including falsetto of course.
My comfortable, reliable range is from low F# to high G. I can sometimes hit a low F (or even E) and a high G#, but I have to really try. In falsetto I can get about an octave higher than that.
It's not so much a question of how high as it is one of how well you can navigate the space between regular singing and falsetto. In my case: not so well.
Im not sure what note exactly (I think my teacher said a low A b...not sure), but alittle over 4 octaves, falsetto included.
After screaming, I go down to 2 or 2 and 1/2 octaves, lol.
My teacher said Im a basso-profundo, or something like that.