Prefix Information

The prefix 231 is part of area code 610 serving Allentown, Pennsylvania.

This exchange contains 10,000 possible phone numbers (610-231-0000 through 610-231-9999).

Browse Numbers in This Prefix

610-231-0000-0999 610-231-1000-1999 610-231-2000-2999 610-231-3000-3999 610-231-4000-4999 610-231-5000-5999 610-231-6000-6999 610-231-7000-7999 610-231-8000-8999 610-231-9000-9999

Sample Numbers

(610) 231-0000 (610) 231-1234 (610) 231-2000 (610) 231-3333 (610) 231-4444 (610) 231-5555 (610) 231-6000 (610) 231-7777 (610) 231-8888 (610) 231-9999