Prefix Information

The prefix 423 is part of area code 331 serving Aurora, Illinois.

This exchange contains 10,000 possible phone numbers (331-423-0000 through 331-423-9999).

Browse Numbers in This Prefix

331-423-0000-0999 331-423-1000-1999 331-423-2000-2999 331-423-3000-3999 331-423-4000-4999 331-423-5000-5999 331-423-6000-6999 331-423-7000-7999 331-423-8000-8999 331-423-9000-9999

Sample Numbers

(331) 423-0000 (331) 423-1234 (331) 423-2000 (331) 423-3333 (331) 423-4444 (331) 423-5555 (331) 423-6000 (331) 423-7777 (331) 423-8888 (331) 423-9999