There are very few cordless phones left on those frequencies. I haven't caught any in many years. Most have gone to 902-928 MHz and higher. There's some analog FM at 902 MHz, but most are unmonitorable by scanners available to the general public now.
I have a pair of 5-channel 49 MHz handhelds from Radio Shack, and I have those frequencies programmed into a PRO-43 handheld scanner, along with MURS, FRS/GMRS, and the Amateur simplex calling channels that the PRO-43 covers. Once in awhile I'll hear a baby monitor in use, but it doesn't last more than a few hundred yards as I drive by. And it's typically just an "open mic" with very little recognizable background noise.
It is illegal to monitor cordless phones, whether in the 40-50 MHz range, or in the 902-928 MHz range. I'm honestly not sure about the baby/room monitors.
While doing service searches of the 902-928 MHz Ham band, I have in recent years run across cordless phones (and a baby monitor IIRC) from a neighbor or two in that range, although even that stopped in the past year or two.
So, yes, it is possible to listen to the few analog FM ones that are left if you can find them, but you'd be in violation of federal law doing so.
