answer:I’m not sure what you mean by “restricted numbers”. Restricted by whom? I do know that when I first got my ATT phone number, I was getting calls from a very unfamiliar set of numbers. By that I mean not the typical US configuration of 3digit area code followed by four numbers. ATT kept telling me they couldn’t block it cuz it wasn’t a landline. I wasn’t really satisfied with that and in trying to get something done, I found out it was a number originating from some African country. So I figured it could be an attempt by one of those Nigerian scams so prevalent on the Internet. After screaming at them several times to stop calling me, I figured out a better solution. International calls can get really expensive for the caller but not the recipient. Since they were making an international call, the entire expense was incurred by them. So, whenever I recognized that number, I never said anything but didn’t hang up either. Hanging up on them just had them calling back several more times that day. So, just left the line active with no sound for however long it took them to realize that they were paying through the nose for a lot of dead airtime. It only took about a dozen or so times more of this for them to get tired of wasting money and take me off their list. Have never heard from that number again for the last two years. If the annoyance calls you’re getting are outside of your country, I hope this helps. If not, you probably won’t get too far with the cell phone company.