Devices with MAC addresses that start with 00-03-91 were manufactured by Advanced Digital Broadcast, Ltd.

Device ManufacturerAdvanced Digital Broadcast, Ltd.
8F, 145 Chung Shan N. Rd. Sec. 2,
TAIWAN TAIWAN R.O.C.
Estimated Devices with 00-03-9116256250
Estimated Total Devices From Mfg16256250
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