Prefix Information

The prefix 637 is part of area code 610 serving Allentown, Pennsylvania.

This exchange contains 10,000 possible phone numbers (610-637-0000 through 610-637-9999).

Browse Numbers in This Prefix

610-637-0000-0999 610-637-1000-1999 610-637-2000-2999 610-637-3000-3999 610-637-4000-4999 610-637-5000-5999 610-637-6000-6999 610-637-7000-7999 610-637-8000-8999 610-637-9000-9999

Sample Numbers

(610) 637-0000 (610) 637-1234 (610) 637-2000 (610) 637-3333 (610) 637-4444 (610) 637-5555 (610) 637-6000 (610) 637-7777 (610) 637-8888 (610) 637-9999