I used to call back local numbers that rang a few times. Once, I think of it as a wrong number… I have to change my thinking, apparently.

“I receive at least six calls a day from area codes in cities I’ve never been to—San Angelo, Texas, say, or Warrenville, Illinois. Occasionally, I’ll receive a call from my hometown in California and worry it’s some kind of emergency.”

Found at lifehacker.com