NYNEX All-Call Blocking Service automatically blocks your number and name from appearing on a Caller ID device for every telephone call you make. It also prevents the called party from using NYNEX Call Return Service (*69) to call you back.

There may be times when you reach a recorded announcement advising that your restricted call will not be accepted. This happens if you call someone who does not wish to receive calls from restricted numbers and has activated NYNEX Anonymous Call Rejection Service. You can complete your call by "turning off" All-Call Blocking on that line (see NYNEX Per-Call Display Service) or by calling from a telephone number that does not have All-Call Blocking on the line.

If you call certain business numbers, such as some 800 or 900 numbers or 911 in some areas of the state, the business you called may learn your number through a different technology called Automatic Number Identification (ANI). All-Call Blocking will not prevent your number from being displayed in these cases.