Prefix Information

The prefix 631 is part of area code 331 serving Aurora, Illinois.

This exchange contains 10,000 possible phone numbers (331-631-0000 through 331-631-9999).

Browse Numbers in This Prefix

331-631-0000-0999 331-631-1000-1999 331-631-2000-2999 331-631-3000-3999 331-631-4000-4999 331-631-5000-5999 331-631-6000-6999 331-631-7000-7999 331-631-8000-8999 331-631-9000-9999

Sample Numbers

(331) 631-0000 (331) 631-1234 (331) 631-2000 (331) 631-3333 (331) 631-4444 (331) 631-5555 (331) 631-6000 (331) 631-7777 (331) 631-8888 (331) 631-9999