We do have a north coast group number, but I can't recall it ever being used. Its use is to request everyone in the group to switch to a different radio channel - not a situation one finds oneself in very often.
I would agree with Tracker - it's more important to hook up with individuals in your area and get their individual number. I started collecting number with the thought of sharing them, but quickly found out that most folks want to be selective about who has their number. So it's best to contact folks directly.