Well, I'm sure my landline is not a landline anymore, I'm sure it is some sort of VoIP system, but it doesn't matter, it is a phone with a number, that doesn't leave the living room.

There are still VoIP services that function essentially the same. I switched to that recently because the real POTS service had been jacked up in price a crazy amount, probably because we were grandfathered into even having it since the company website didn't even seem to offer it anymore.