Prefix Information

The prefix 665 is part of area code 406 serving Billings, Montana.

This exchange contains 10,000 possible phone numbers (406-665-0000 through 406-665-9999).

Browse Numbers in This Prefix

406-665-0000-0999 406-665-1000-1999 406-665-2000-2999 406-665-3000-3999 406-665-4000-4999 406-665-5000-5999 406-665-6000-6999 406-665-7000-7999 406-665-8000-8999 406-665-9000-9999

Sample Numbers

(406) 665-0000 (406) 665-1234 (406) 665-2000 (406) 665-3333 (406) 665-4444 (406) 665-5555 (406) 665-6000 (406) 665-7777 (406) 665-8888 (406) 665-9999