A system for identifying communicators in a communication environment as wanted or unwanted, the system comprising: a directory server comprising memory and a processing device configured to: determine communications from phone numbers as being unwanted by analyzing communication content features of communications associated with unwanted communicators, identify telecommunications carriers that acquired the phone numbers from which communications were determined as being unwanted, determine that the phone numbers are attributed to one or more series of phone numbers belonging to the telecommunications carriers, and score the telecommunications carriers and the one or more series of phone numbers belonging to the telecommunications carriers based on an amount of determined unwanted communications from the phone numbers; and a communication screening system configured to: intercept an inbound communication from a given phone number, identify the given phone number is associated with a given one of the telecommunications carriers and within a given one of the series of phone numbers; and configure handling of communications from the phone number based on scores of the given telecommunications carrier and the given series of phone numbers. a directory server comprising memory and a processing device configured to: determine communications from phone numbers as being unwanted by analyzing communication content features of communications associated with unwanted communicators, identify telecommunications carriers that acquired the phone numbers from which communications were determined as being unwanted, determine that the phone numbers are attributed to one or more series of phone numbers belonging to the telecommunications carriers, and score the telecommunications carriers and the one or more series of phone numbers belonging to the telecommunications carriers based on an amount of determined unwanted communications from the phone numbers; and determine communications from phone numbers as being unwanted by analyzing communication content features of communications associated with unwanted communicators, identify telecommunications carriers that acquired the phone numbers from which communications were determined as being unwanted, determine that the phone numbers are attributed to one or more series of phone numbers belonging to the telecommunications carriers, and score the telecommunications carriers and the one or more series of phone numbers belonging to the telecommunications carriers based on an amount of determined unwanted communications from the phone numbers; a communication screening system configured to: intercept an inbound communication from a given phone number, identify the given phone number is associated with a given one of the telecommunications carriers and within a given one of the series of phone numbers; and configure handling of communications from the phone number based on scores of the given telecommunications carrier and the given series of phone numbers. intercept an inbound communication from a given phone number, identify the given phone number is associated with a given one of the telecommunications carriers and within a given one of the series of phone numbers; and configure handling of communications from the phone number based on scores of the given telecommunications carrier and the given series of phone numbers.