A4:58:0F:5 CoAsia Microelectronics Corp.
Every MAC address from A4:58:0F:50:00:00 to A4:58:0F:5F:FF:FF belongs to a block the IEEE assigned to CoAsia Microelectronics Corp.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who A4:58:0F:5 belongs to
Written A4:58:0F:5, A4-58-0F-5 or A4580F5, depending on the system. Look up a full address.
Prefix
A4:58:0F:5/28
Organization
CoAsia Microelectronics Corp.
Registry
MA-M (28 bits)
Addresses
1,048,576
First address
A4:58:0F:50:00:00
Last address
A4:58:0F:5F:FF:FF
Address type
Globally unique, unicast
Registered address
13F, No. 3-2, Park St. Nangang District Taipei TW 11503
Parent block
Inside A4:58:0F
This MA-M block is carved from the 24-bit block A4:58:0F, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.