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← Area code 337

337-399 phone numbers

Numbers 337-399-0000 to 337-399-9999 are assigned to Vonage America LLC in Lafayette, LA. 6 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 337-399-4xxx, 337-399-5xxx, 337-399-6xxx — calls from these use spoofed caller IDs.

Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.

Reported numbers in 337-399