Prefix Information

The prefix 423 is part of area code 712 serving Sioux City, Iowa.

This exchange contains 10,000 possible phone numbers (712-423-0000 through 712-423-9999).

Browse Numbers in This Prefix

712-423-0000-0999 712-423-1000-1999 712-423-2000-2999 712-423-3000-3999 712-423-4000-4999 712-423-5000-5999 712-423-6000-6999 712-423-7000-7999 712-423-8000-8999 712-423-9000-9999

Sample Numbers

(712) 423-0000 (712) 423-1234 (712) 423-2000 (712) 423-3333 (712) 423-4444 (712) 423-5555 (712) 423-6000 (712) 423-7777 (712) 423-8888 (712) 423-9999