A processing system may determine a nuisance traffic event. The processing system may receive from a first entity a request to determine a status of a wireless user endpoint device associated with a wireless phone number, wherein the status comprises a determination as to a validity of a subject communication associated with the wireless phone number, perform a presence analysis of the wireless user endpoint device based on the wireless phone number, and respond to the request by providing an indication as to the validity of the subject communication associated with the wireless phone number back to the first entity.