There are still a ton of time numbers kicking around. My local phone company still offers (513) 721-1700 and I have (513) 241-1010 burned into my memory from dialing it a million times as a kid playing with the phone.

Plus you can hear two signals from NIST themselves:

(303) 499-7111 - WWV (John Doyle)

(808) 335-4363 - WWVH (Jane Barbe) - in Hawaii, might cost extra to call depending on plan

And there are these two offered by US Naval Observatory in Washington

(202) 762-1069

(202) 762-1401

Plenty more out there if you do some Googling.