Prefix Information

The prefix 999 is part of area code 605 serving Sioux Falls, South Dakota.

This exchange contains 10,000 possible phone numbers (605-999-0000 through 605-999-9999).

Browse Numbers in This Prefix

605-999-0000-0999 605-999-1000-1999 605-999-2000-2999 605-999-3000-3999 605-999-4000-4999 605-999-5000-5999 605-999-6000-6999 605-999-7000-7999 605-999-8000-8999 605-999-9000-9999

Sample Numbers

(605) 999-0000 (605) 999-1234 (605) 999-2000 (605) 999-3333 (605) 999-4444 (605) 999-5555 (605) 999-6000 (605) 999-7777 (605) 999-8888 (605) 999-9999