141-010-0056

141-010-0056 shows up on my at&t phone bill, it may come up as the same number several times and then it will come up as 141-010-0057 and that will come up a few times and on and on consecutive numbers. Always as received. These are numbers that come up on my phone only when my ex cheating girlfriend was using phone. I previously read that these are blocked txts/numbers that she did not want me to know who was texting her from a phone or like a G-Mail/yahoo account or facebook.