Devices with MAC addresses that start with 00-21-30 were manufactured by Keico Hightech Inc.

Device Manufacturer
Keico Hightech Inc.
Manufacturer Location
Ace twin tower I, 12th Fl.
Seoul 152-050
Estimated Devices using 00-21-30
16,256,250
Estimated Total Devices From Mfg
16,256,250
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