Prefix Information

The prefix 660 is part of area code 605 serving Sioux Falls, South Dakota.

This exchange contains 10,000 possible phone numbers (605-660-0000 through 605-660-9999).

Browse Numbers in This Prefix

605-660-0000-0999 605-660-1000-1999 605-660-2000-2999 605-660-3000-3999 605-660-4000-4999 605-660-5000-5999 605-660-6000-6999 605-660-7000-7999 605-660-8000-8999 605-660-9000-9999

Sample Numbers

(605) 660-0000 (605) 660-1234 (605) 660-2000 (605) 660-3333 (605) 660-4444 (605) 660-5555 (605) 660-6000 (605) 660-7777 (605) 660-8888 (605) 660-9999