MAC prefix B8:38:EF
| Vendor | ADVA Optical Networking Ltd. |
|---|---|
| Short name | ADVAOpticalN |
| Prefix | B8:38:EF/24 |
| Block type | MA-L (/24, 16,777,216 addresses) |
| Address range | B8:38:EF:00:00:00 – B8:38:EF:FF:FF:FF |
| Notations | B8:38:EF:00:00:00B8-38-EF-00-00-00b838.ef00.0000B838EF000000 |
Frequently asked questions
Which vendor does MAC address B8:38:EF belong to?
MAC addresses starting with B8:38:EF are assigned to ADVA Optical Networking Ltd. according to the IEEE registry (prefix length 24 bits).
How many addresses does block B8:38:EF contain?
The block contains 16,777,216 addresses from B8:38:EF:00:00:00 to B8:38:EF:FF:FF:FF.
Is B8:38:EF 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.
Which other MAC prefixes does ADVA Optical Networking Ltd. have?
ADVA Optical Networking Ltd. holds 8 registered prefixes in total – the full list is on the vendor page.