MAC prefix 20:B3:99
| Vendor | Enterasys |
|---|---|
| Prefix | 20:B3:99/24 |
| Block type | MA-L (/24, 16,777,216 addresses) |
| Address range | 20:B3:99:00:00:00 – 20:B3:99:FF:FF:FF |
| Notations | 20:B3:99:00:00:0020-B3-99-00-00-0020b3.9900.000020B399000000 |
Frequently asked questions
Which vendor does MAC address 20:B3:99 belong to?
MAC addresses starting with 20:B3:99 are assigned to Enterasys according to the IEEE registry (prefix length 24 bits).
How many addresses does block 20:B3:99 contain?
The block contains 16,777,216 addresses from 20:B3:99:00:00:00 to 20:B3:99:FF:FF:FF.
Is 20:B3:99 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 Enterasys have?
Enterasys holds 4 registered prefixes in total – the full list is on the vendor page.