Prefix Information

The prefix 666 is part of area code 331 serving Aurora, Illinois.

This exchange contains 10,000 possible phone numbers (331-666-0000 through 331-666-9999).

Browse Numbers in This Prefix

331-666-0000-0999 331-666-1000-1999 331-666-2000-2999 331-666-3000-3999 331-666-4000-4999 331-666-5000-5999 331-666-6000-6999 331-666-7000-7999 331-666-8000-8999 331-666-9000-9999

Sample Numbers

(331) 666-0000 (331) 666-1234 (331) 666-2000 (331) 666-3333 (331) 666-4444 (331) 666-5555 (331) 666-6000 (331) 666-7777 (331) 666-8888 (331) 666-9999