Holtek Semiconductor Inc.

Holtek Semiconductor Inc. holds 2 OUI prefixes in the IEEE registry. Each prefix is the first three octets of a MAC address and covers a block of 16,777,216 addresses, so devices built by Holtek Semiconductor Inc. draw from a pool of about 33,554,432 possible MAC addresses in total.

Registered address: No.3, Creation Rd. II, Science Park Hsinchu TW 300

All 2 prefixes

• 04:AC:4404:AC:44:00:00:00 – 04:AC:44:FF:FF:FF
• B8:CA:04B8:CA:04:00:00:00 – B8:CA:04:FF:FF:FF

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