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According to the IEEE 802 specification, a MAC address has 6 groups of 2 hexadecimal digits separate...
A free online regular expression test tool that allows to try you regular expression pattern and see...
All credit card numbers issued by American Express must start with 34 or 37 and have 15 digits. For ...
According to the IEEE 802 specification, a MAC address has 6 groups of 2 hexadecimal digits separate...
All credit card numbers issued by American Express must start with 34 or 37 and have 15 digits. For ...