Prefix Information

The prefix 840 is part of area code 331 serving Aurora, Illinois.

This exchange contains 10,000 possible phone numbers (331-840-0000 through 331-840-9999).

Browse Numbers in This Prefix

331-840-0000-0999 331-840-1000-1999 331-840-2000-2999 331-840-3000-3999 331-840-4000-4999 331-840-5000-5999 331-840-6000-6999 331-840-7000-7999 331-840-8000-8999 331-840-9000-9999

Sample Numbers

(331) 840-0000 (331) 840-1234 (331) 840-2000 (331) 840-3333 (331) 840-4444 (331) 840-5555 (331) 840-6000 (331) 840-7777 (331) 840-8888 (331) 840-9999