MAC Address Lookup

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Vendor details - OPTSYS


OPTSYS
7, rue Salvador Dali – BP 505
SAINT ETIENNE    42007
 FR

OUI block range
70:B3:D5:58:C MA-S 70:B3:D5:58:C0:00 - 70:B3:D5:58:CF:FF

https://uic.io/en/mac/vendor/optsys/