Prefix Information

The prefix 640 is part of area code 781 serving Lexington, Massachusetts.

This exchange contains 10,000 possible phone numbers (781-640-0000 through 781-640-9999).

Browse Numbers in This Prefix

781-640-0000-0999 781-640-1000-1999 781-640-2000-2999 781-640-3000-3999 781-640-4000-4999 781-640-5000-5999 781-640-6000-6999 781-640-7000-7999 781-640-8000-8999 781-640-9000-9999

Sample Numbers

(781) 640-0000 (781) 640-1234 (781) 640-2000 (781) 640-3333 (781) 640-4444 (781) 640-5555 (781) 640-6000 (781) 640-7777 (781) 640-8888 (781) 640-9999