Prefix Information

The prefix 257 is part of area code 712 serving Sioux City, Iowa.

This exchange contains 10,000 possible phone numbers (712-257-0000 through 712-257-9999).

Browse Numbers in This Prefix

712-257-0000-0999 712-257-1000-1999 712-257-2000-2999 712-257-3000-3999 712-257-4000-4999 712-257-5000-5999 712-257-6000-6999 712-257-7000-7999 712-257-8000-8999 712-257-9000-9999

Sample Numbers

(712) 257-0000 (712) 257-1234 (712) 257-2000 (712) 257-3333 (712) 257-4444 (712) 257-5555 (712) 257-6000 (712) 257-7777 (712) 257-8888 (712) 257-9999