04:AC:44 Holtek Semiconductor Inc.
Every MAC address from 04:AC:44:00:00:00 to 04:AC:44:FF:FF:FF belongs to a block the IEEE assigned to Holtek Semiconductor Inc.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 04:AC:44 belongs to
Written 04:AC:44, 04-AC-44 or 04AC44, depending on the system. Look up a full address.
Prefix
04:AC:44
Organization
Holtek Semiconductor Inc.
Registry
MA-L (a 24-bit OUI)
Addresses
16,777,216
First address
04:AC:44:00:00:00
Last address
04:AC:44:FF:FF:FF
Address type
Globally unique, unicast
Registered address
No.3, Creation Rd. II, Science Park Hsinchu TW 300
Same organization
Other blocks assigned to Holtek Semiconductor Inc.
1 more block registered under the same name.