Prefix Information

The prefix 644 is part of area code 412 serving Pittsburgh, Pennsylvania.

This exchange contains 10,000 possible phone numbers (412-644-0000 through 412-644-9999).

Browse Numbers in This Prefix

412-644-0000-0999 412-644-1000-1999 412-644-2000-2999 412-644-3000-3999 412-644-4000-4999 412-644-5000-5999 412-644-6000-6999 412-644-7000-7999 412-644-8000-8999 412-644-9000-9999

Sample Numbers

(412) 644-0000 (412) 644-1234 (412) 644-2000 (412) 644-3333 (412) 644-4444 (412) 644-5555 (412) 644-6000 (412) 644-7777 (412) 644-8888 (412) 644-9999