Prefix Information

The prefix 421 is part of area code 781 serving Lexington, Massachusetts.

This exchange contains 10,000 possible phone numbers (781-421-0000 through 781-421-9999).

Browse Numbers in This Prefix

781-421-0000-0999 781-421-1000-1999 781-421-2000-2999 781-421-3000-3999 781-421-4000-4999 781-421-5000-5999 781-421-6000-6999 781-421-7000-7999 781-421-8000-8999 781-421-9000-9999

Sample Numbers

(781) 421-0000 (781) 421-1234 (781) 421-2000 (781) 421-3333 (781) 421-4444 (781) 421-5555 (781) 421-6000 (781) 421-7777 (781) 421-8888 (781) 421-9999