List of operatic contraltos
The contralto voice in opera and classical music has a range which typically lies between the F below middle C (F3) to two Fs above middle C (F5). In the lower and upper extremes, some contralto voices can sing from the E below middle C (E3) to two B♭s above middle C (B♭5).
Source: Wikipedia — List of operatic contraltos (CC BY-SA 4.0)