Sounds like your not being marked properly and the new Shaken/STIR protocol which is charge of determining this is not working for you.
Does this only happen to when cell phones are on one carrier or is it happening across all celular carriers. If only one carrier I would suggest asking Century link to work with that carrier. If it is all carriers I would ask century link to fix the issue.
Apple and most companies are rolling this out. Your carrier should be able to tell you why exactly your calls are being marked this way.... and if they can't guess what there are other carriers.
