I need a nomorobo number in the 520 (Tucson) area code

I can't find any way to talk to nomorobo human-to-human, and Cox isn't able to provide, but I need a 520 area code (Tucson) number to use for the simulaneous ring for nomorobo.  The one I was provided is a 602 number, and I'm being charged for each call intercepted as a long distance call to Phoenix.  Are there any users in Tucson that have a 520 number they are using for the service?