Adding a rule with a specific number to the front of the PHONE outboundcallroute should work.
Example:
{(18002464411|18005551212):},
added to the front of the call route will return the "there is no service ......" when dialing any of those 2 numbers.
It works for me.
I just added it to my OCR and tested it. This is my OCR
{(18002464411|18005551212):},{(Mabc):},{([1-9]x?*(Mpli)):pp},{(<#:>):ph2},{**0:aa},{***:aa2},{(<**1:>(Msp1)):sp1},{(<**2:>(Msp2)):sp2},{(<**3:>(Msp3)):sp3},{(<**4:>(Msp4)):sp4},{(<**9:>(Mpp)):pp},{(Mpli):pli}