Prefix Information

The prefix 840 is part of area code 313 serving Detroit, Michigan.

This exchange contains 10,000 possible phone numbers (313-840-0000 through 313-840-9999).

Browse Numbers in This Prefix

313-840-0000-0999 313-840-1000-1999 313-840-2000-2999 313-840-3000-3999 313-840-4000-4999 313-840-5000-5999 313-840-6000-6999 313-840-7000-7999 313-840-8000-8999 313-840-9000-9999

Sample Numbers

(313) 840-0000 (313) 840-1234 (313) 840-2000 (313) 840-3333 (313) 840-4444 (313) 840-5555 (313) 840-6000 (313) 840-7777 (313) 840-8888 (313) 840-9999