A4:58:0F:A GUANGZHOU OPTICAL BRIDGE COMMUNICATION EQUIPMENT CO.,LTD.
Every MAC address from A4:58:0F:A0:00:00 to A4:58:0F:AF:FF:FF belongs to a block the IEEE assigned to GUANGZHOU OPTICAL BRIDGE COMMUNICATION EQUIPMENT CO.,LTD.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who A4:58:0F:A belongs to
Written A4:58:0F:A, A4-58-0F-A or A4580FA, depending on the system. Look up a full address.
Prefix
A4:58:0F:A/28
Organization
GUANGZHOU OPTICAL BRIDGE COMMUNICATION EQUIPMENT CO.,LTD.
Registry
MA-M (28 bits)
Addresses
1,048,576
First address
A4:58:0F:A0:00:00
Last address
A4:58:0F:AF:FF:FF
Address type
Globally unique, unicast
Registered address
room b201,NO.263,middle of zhougshan avenue,tianhe guangzhou CN 510660
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.