I have done several SASSIE phone shops using * 67. However, an few months ago I did an SASSIE phone shop using * 67.. When I gave the agent an number in the same area code (Like the guidelines said), the number on their end was showing my cell phone number.
I asked my cell phone carrier about using * 67 on 800 and 888 numbers and they said that you can not block those numbers.. I called my wife's cell phone by blocking my number and it worked.. I told her I was doing that.
Before I do the shop, I read the guidelines and I find an number in the same area code as the guidelines..