Prefix Information

The prefix 691 is part of area code 331 serving Aurora, Illinois.

This exchange contains 10,000 possible phone numbers (331-691-0000 through 331-691-9999).

Browse Numbers in This Prefix

331-691-0000-0999 331-691-1000-1999 331-691-2000-2999 331-691-3000-3999 331-691-4000-4999 331-691-5000-5999 331-691-6000-6999 331-691-7000-7999 331-691-8000-8999 331-691-9000-9999

Sample Numbers

(331) 691-0000 (331) 691-1234 (331) 691-2000 (331) 691-3333 (331) 691-4444 (331) 691-5555 (331) 691-6000 (331) 691-7777 (331) 691-8888 (331) 691-9999