Prefix Information

The prefix 121 is part of area code 712 serving Sioux City, Iowa.

This exchange contains 10,000 possible phone numbers (712-121-0000 through 712-121-9999).

Browse Numbers in This Prefix

712-121-0000-0999 712-121-1000-1999 712-121-2000-2999 712-121-3000-3999 712-121-4000-4999 712-121-5000-5999 712-121-6000-6999 712-121-7000-7999 712-121-8000-8999 712-121-9000-9999

Sample Numbers

(712) 121-0000 (712) 121-1234 (712) 121-2000 (712) 121-3333 (712) 121-4444 (712) 121-5555 (712) 121-6000 (712) 121-7777 (712) 121-8888 (712) 121-9999