There's a number from Amazon's Fallout series that can actually be called, only the person that picks up doesn't send all that pleased to hear from you.
Light spoilers ahead for the Fallout show.
Whenever there's a phone number clearly shown in a piece of media, the first question should always be "does anything happen when you call this number?" A lot of the time it won't lead to anything, as they're often fake, but sometimes production companies will set it up so that when you call the number you're met with a fun, in-world message. For example, actually calling Saul Goodman's number from Breaking Bad will net you a fake message from his office, which is a fun one. Amazon's Fallout series released just last week, and in the sixth episode there's a flashback featuring Walton Goggins' character performing in an ad for Vault-Tec.
