Telefonica O2 number prefixes
Telefonica O2 prefixes in Slovakia: 940, 944, 947, 948, 949. Number format +421 940 XXX XXX.
940
- Country
Slovakia +421- Prefixes
- 940, 944, 947, 948, 949
- Number format
- +421 940 XXX XXX
- Within the country
- 0940 XXX XXX
A prefix shows which operator a number range was originally assigned to. In many countries subscribers can port their number to another operator, so the prefix does not guarantee the current operator.