Guangxing Communication Co number prefixes
Guangxing Communication Co prefixes in Macao SAR China: 6690, 6691. Number format +853 6690 XXXX.
6690
- Country
Macao SAR China +853- Prefixes
- 6690, 6691
- Number format
- +853 6690 XXXX
- Within the country
- 6690 XXXX
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.