Prefix Information

The prefix 623 is part of area code 406 serving Billings, Montana.

This exchange contains 10,000 possible phone numbers (406-623-0000 through 406-623-9999).

Browse Numbers in This Prefix

406-623-0000-0999 406-623-1000-1999 406-623-2000-2999 406-623-3000-3999 406-623-4000-4999 406-623-5000-5999 406-623-6000-6999 406-623-7000-7999 406-623-8000-8999 406-623-9000-9999

Sample Numbers

(406) 623-0000 (406) 623-1234 (406) 623-2000 (406) 623-3333 (406) 623-4444 (406) 623-5555 (406) 623-6000 (406) 623-7777 (406) 623-8888 (406) 623-9999