Looks like there is a shift in the VOIP industry to enforce some caller ID rules. This is an awesome move as it will surely dampen some of the annoying calls we all receive.
Here are the changes for VOIP.MS:
- International calls with Caller ID containing less than 7 digits and greater than 15 digits;
- North America calls with Caller ID not containing exactly 10 digits (exception will be made for 7 digits for 310-xxx numbers);
- North America calls with Caller ID containing 10 digits, but with an unassigned NPA (first 3 digits of the number);
- North America calls with Caller ID containing 10 digits, but where an un-assignable NXX is used (i.e. the second block of 3 digits where the first digit is either zero (0) or one (1)).