Prefix Information

The prefix 504 is part of area code 331 serving Aurora, Illinois.

This exchange contains 10,000 possible phone numbers (331-504-0000 through 331-504-9999).

Browse Numbers in This Prefix

331-504-0000-0999 331-504-1000-1999 331-504-2000-2999 331-504-3000-3999 331-504-4000-4999 331-504-5000-5999 331-504-6000-6999 331-504-7000-7999 331-504-8000-8999 331-504-9000-9999

Sample Numbers

(331) 504-0000 (331) 504-1234 (331) 504-2000 (331) 504-3333 (331) 504-4444 (331) 504-5555 (331) 504-6000 (331) 504-7777 (331) 504-8888 (331) 504-9999