Prefix Information

The prefix 428 is part of area code 712 serving Sioux City, Iowa.

This exchange contains 10,000 possible phone numbers (712-428-0000 through 712-428-9999).

Browse Numbers in This Prefix

712-428-0000-0999 712-428-1000-1999 712-428-2000-2999 712-428-3000-3999 712-428-4000-4999 712-428-5000-5999 712-428-6000-6999 712-428-7000-7999 712-428-8000-8999 712-428-9000-9999

Sample Numbers

(712) 428-0000 (712) 428-1234 (712) 428-2000 (712) 428-3333 (712) 428-4444 (712) 428-5555 (712) 428-6000 (712) 428-7777 (712) 428-8888 (712) 428-9999