Prefix Information

The prefix 231 is part of area code 217 serving Springfield, Illinois.

This exchange contains 10,000 possible phone numbers (217-231-0000 through 217-231-9999).

Browse Numbers in This Prefix

217-231-0000-0999 217-231-1000-1999 217-231-2000-2999 217-231-3000-3999 217-231-4000-4999 217-231-5000-5999 217-231-6000-6999 217-231-7000-7999 217-231-8000-8999 217-231-9000-9999

Sample Numbers

(217) 231-0000 (217) 231-1234 (217) 231-2000 (217) 231-3333 (217) 231-4444 (217) 231-5555 (217) 231-6000 (217) 231-7777 (217) 231-8888 (217) 231-9999