MAC prefix 8C:1F:64:51:4

iOpt

VendoriOpt
Prefix8C:1F:64:51:4/36
Block typeMA-S (/36, 4,096 addresses)
Address range8C:1F:64:51:40:00 – 8C:1F:64:51:4F:FF
Notations8C:1F:64:51:40:00
8C-1F-64-51-40-00
8c1f.6451.4000
8C1F64514000

Frequently asked questions

Which vendor does MAC address 8C:1F:64:51:4 belong to?

MAC addresses starting with 8C:1F:64:51:4 are assigned to iOpt according to the IEEE registry (prefix length 36 bits).

How many addresses does block 8C:1F:64:51:4 contain?

The block contains 4,096 addresses from 8C:1F:64:51:40:00 to 8C:1F:64:51:4F:FF.

Is 8C:1F:64:51:4 a unicast or multicast address?

The least significant bit of the first byte is 0 – it is a unicast address. The U/L bit is 0, so the address is globally unique (universally administered).

How do I find the MAC address of my device?

On Linux use ip link, on Windows getmac /v or ipconfig /all, on macOS ifconfig. Note: phones and recent operating systems often use random, locally administered addresses on Wi-Fi.

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