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All credit card numbers issued by Diners Club must start with 300 through 305, 36 or 38 and have 14 ...

According to the IEEE 802 specification, a MAC address has 6 groups of 2 hexadecimal digits separate...

According to the IEEE 802 specification, a MAC address has 6 groups of 2 hexadecimal digits separate...

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All credit card numbers issued by American Express must start with 34 or 37 and have 15 digits. For ...