406-718 phone numbers

Numbers 406-718-0000 to 406-718-9999 are assigned to Twilio International, Inc. in Darby, MT. 3 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 406-718-0xxx, 406-718-2xxx, 406-718-3xxx, 406-718-5xxx, 406-718-6xxx, 406-718-9xxx — calls from these use spoofed caller IDs.

Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.

Reported numbers in 406-718