Error 404 has a criminal record but has not been found. (Pun no. 1)
All of us, especially Error 403 (his twin brother) have been forbidden from contacting 404. (Pun no. 2)
Also, calling people by three-digit numbers is an excellent idea! My aunt 673 is elated for two reasons! First, we all approve of the number system, and secondly, my uncle 999, her husband, has got a job as a policeman! (Pun no. 3)