Prefix Information

The prefix 638 is part of area code 331 serving Aurora, Illinois.

This exchange contains 10,000 possible phone numbers (331-638-0000 through 331-638-9999).

Browse Numbers in This Prefix

331-638-0000-0999 331-638-1000-1999 331-638-2000-2999 331-638-3000-3999 331-638-4000-4999 331-638-5000-5999 331-638-6000-6999 331-638-7000-7999 331-638-8000-8999 331-638-9000-9999

Sample Numbers

(331) 638-0000 (331) 638-1234 (331) 638-2000 (331) 638-3333 (331) 638-4444 (331) 638-5555 (331) 638-6000 (331) 638-7777 (331) 638-8888 (331) 638-9999