Prefix Information

The prefix 399 is part of area code 712 serving Sioux City, Iowa.

This exchange contains 10,000 possible phone numbers (712-399-0000 through 712-399-9999).

Browse Numbers in This Prefix

712-399-0000-0999 712-399-1000-1999 712-399-2000-2999 712-399-3000-3999 712-399-4000-4999 712-399-5000-5999 712-399-6000-6999 712-399-7000-7999 712-399-8000-8999 712-399-9000-9999

Sample Numbers

(712) 399-0000 (712) 399-1234 (712) 399-2000 (712) 399-3333 (712) 399-4444 (712) 399-5555 (712) 399-6000 (712) 399-7777 (712) 399-8888 (712) 399-9999