Prefix Information

The prefix 311 is part of area code 712 serving Sioux City, Iowa.

This exchange contains 10,000 possible phone numbers (712-311-0000 through 712-311-9999).

Browse Numbers in This Prefix

712-311-0000-0999 712-311-1000-1999 712-311-2000-2999 712-311-3000-3999 712-311-4000-4999 712-311-5000-5999 712-311-6000-6999 712-311-7000-7999 712-311-8000-8999 712-311-9000-9999

Sample Numbers

(712) 311-0000 (712) 311-1234 (712) 311-2000 (712) 311-3333 (712) 311-4444 (712) 311-5555 (712) 311-6000 (712) 311-7777 (712) 311-8888 (712) 311-9999