People have filed complaints due to their numbers being used in fictional stories. Some people (not me, I understand their motivation but not their follow-through) have tried to call numbers they heard about in movies or read in books. Decades ago telephone companies asked Hollywood to use the prefix 555 for telephone numbers. Obviously many writers, producers, directors, etc. complied. Not complying causes people many annoying calls.
Oh, it gets narrower: Currently only the numbers 555-0100 through 555-0199 are reserved for ficticious use.
True, it may seem more realistic to use other numbers, but it may save some innocent people calls.
More information- entry in "useless_facts"