Prefix Information

The prefix 123 is part of area code 605 serving Sioux Falls, South Dakota.

This exchange contains 10,000 possible phone numbers (605-123-0000 through 605-123-9999).

Browse Numbers in This Prefix

605-123-0000-0999 605-123-1000-1999 605-123-2000-2999 605-123-3000-3999 605-123-4000-4999 605-123-5000-5999 605-123-6000-6999 605-123-7000-7999 605-123-8000-8999 605-123-9000-9999

Sample Numbers

(605) 123-0000 (605) 123-1234 (605) 123-2000 (605) 123-3333 (605) 123-4444 (605) 123-5555 (605) 123-6000 (605) 123-7777 (605) 123-8888 (605) 123-9999