Recorders have names which describe their playing pitch. The pitch would be the lowest note on the instrument.

recorder name	pitch
440 sixth flute	d
415 sixth flute	c♯
440 soprano	c
415 soprano	b
440 forth flute	b♭
415 forth flute	a
466 g alto	g♯
440 g alto	g
415 g alto	g♭
440 f alto	f
415 f alto	e
392 f alto	e♭
440 voice flute	d
415 voice flute	c♯
440 tenor	C
415 tenor	B