Prefix Information

The prefix 399 is part of area code 378 serving Unknown, Unknown.

This exchange contains 10,000 possible phone numbers (378-399-0000 through 378-399-9999).

Browse Numbers in This Prefix

378-399-0000-0999 378-399-1000-1999 378-399-2000-2999 378-399-3000-3999 378-399-4000-4999 378-399-5000-5999 378-399-6000-6999 378-399-7000-7999 378-399-8000-8999 378-399-9000-9999

Sample Numbers

(378) 399-0000 (378) 399-1234 (378) 399-2000 (378) 399-3333 (378) 399-4444 (378) 399-5555 (378) 399-6000 (378) 399-7777 (378) 399-8888 (378) 399-9999