Prefix Information

The prefix 421 is part of area code 248 serving Troy, Michigan.

This exchange contains 10,000 possible phone numbers (248-421-0000 through 248-421-9999).

Browse Numbers in This Prefix

248-421-0000-0999 248-421-1000-1999 248-421-2000-2999 248-421-3000-3999 248-421-4000-4999 248-421-5000-5999 248-421-6000-6999 248-421-7000-7999 248-421-8000-8999 248-421-9000-9999

Sample Numbers

(248) 421-0000 (248) 421-1234 (248) 421-2000 (248) 421-3333 (248) 421-4444 (248) 421-5555 (248) 421-6000 (248) 421-7777 (248) 421-8888 (248) 421-9999