NPA-NXX - 450-578

This is the 450-578 subcode (NPA-NXX) prefix page. Follow a prefix to find the number you are looking for. We divide our pages up to make them more user friendly to navigate!

1. Area Codes
2. 450
3. 450-578

The 450-578 subcode mainly covers Granby in La Haute-yamaska county. But other numbers maybe included as well.

We have a database of information derived from the public phone records of Quebec state. Many of the numbers in this subcode are Cellular (Dedicated) registered to Rogers Communications. We hear they employ a large number of people in the Quebec office.
Recently there have been an increase in reported calls, we've had over 85042 comments across our systems for the 450-578 subcode.