Prefix Information

The prefix 378 is part of area code 231 serving Muskegon, Michigan.

This exchange contains 10,000 possible phone numbers (231-378-0000 through 231-378-9999).

Browse Numbers in This Prefix

231-378-0000-0999 231-378-1000-1999 231-378-2000-2999 231-378-3000-3999 231-378-4000-4999 231-378-5000-5999 231-378-6000-6999 231-378-7000-7999 231-378-8000-8999 231-378-9000-9999

Sample Numbers

(231) 378-0000 (231) 378-1234 (231) 378-2000 (231) 378-3333 (231) 378-4444 (231) 378-5555 (231) 378-6000 (231) 378-7777 (231) 378-8888 (231) 378-9999