Prefix 631 in Bulgaria
Data for prefix 631 as published in Bulgaria'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
- Svishtov
- Example format
- +359 63 1XX XX
Indexed numbers
No indexed numbers for this prefix yet.