Cell Phone Number Verification Provides the location and verification of a Consumer's Name and Address with their Cell Number or Non-Published Phone Number. The Cell Phone Verification service file identifies those Area codes and Exchanges or blocks of numbers assigned to wireless carriers active within the North American Numbering Plan in the U.S. and Canada. A replacement file is created twice each month and covers nearly 450,000 blocks representing some 450 million phone numbers that are currently assigned or will be assigned to cellular phones. Each record on the file contains 5 fields labeled: • NPS (area code) • NXX (exchange) • X (1st digit of the remaining number - the block of 1,000 numbers) • Category (wire = wireless, PCS = personal communication service, etc) • Future Use (reserved for future use) The first three fields contain a total of 7 digits that identifies a block of 1,000 telephone numbers assigned to a wireless carrier. These 7 digits, representing the area code, exchange and 1st position of the telephone number, must be matched to the first 7 digits of the prospects telephone number. A match indicates that the telephone number has been assigned to a wireless carrier. Wireless - Ported Number Files supplement the Cell Phone Verfication file. The Wireless - Ported Number file provides information to identify:
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| Numbers that appear to belong to wired land lines but are now assigned to wireless telephones. | • | Numbers that appear to belong to wireless telephones but are now assigned to wired land lines. |
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