← Area code 337
337-220 phone numbers
Numbers 337-220-0000 to 337-220-9999 are assigned to Centurylink Communications, LLC (rate centre TURKEY CRK, LA, NANPA abbreviation). 3 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 337-220-2xxx, 337-220-3xxx, 337-220-5xxx, 337-220-6xxx, 337-220-8xxx, 337-220-9xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.