MAC prefix 20:5B:2A
| Vendor | Private |
|---|---|
| Prefix | 20:5B:2A/24 |
| Block type | MA-L (/24, 16,777,216 addresses) |
| Address range | 20:5B:2A:00:00:00 – 20:5B:2A:FF:FF:FF |
| Notations | 20:5B:2A:00:00:0020-5B-2A-00-00-00205b.2a00.0000205B2A000000 |
Frequently asked questions
Which vendor does MAC address 20:5B:2A belong to?
MAC addresses starting with 20:5B:2A are assigned to Private according to the IEEE registry (prefix length 24 bits).
How many addresses does block 20:5B:2A contain?
The block contains 16,777,216 addresses from 20:5B:2A:00:00:00 to 20:5B:2A:FF:FF:FF.
Is 20:5B:2A 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 Private have?
Private holds 240 registered prefixes in total – the full list is on the vendor page.