Prefix 406 in United States
Data for prefix 406 as published in United States's official numbering plan — the original allocation, not any specific number's current carrier, since numbers can be ported.
- Carrier (original allocation)
- —
- Line type
- Landline
- Region
- Montana
- Example format
- +1 406 XXX XXXX
Indexed numbers
No indexed numbers for this prefix yet.