MAC prefix 20:1B:C9
| Vendor | Juniper Networks |
|---|---|
| Short name | JuniperNetwo |
| Prefix | 20:1B:C9/24 |
| Block type | MA-L (/24, 16,777,216 addresses) |
| Address range | 20:1B:C9:00:00:00 – 20:1B:C9:FF:FF:FF |
| Notations | 20:1B:C9:00:00:0020-1B-C9-00-00-00201b.c900.0000201BC9000000 |
Frequently asked questions
Which vendor does MAC address 20:1B:C9 belong to?
MAC addresses starting with 20:1B:C9 are assigned to Juniper Networks according to the IEEE registry (prefix length 24 bits).
How many addresses does block 20:1B:C9 contain?
The block contains 16,777,216 addresses from 20:1B:C9:00:00:00 to 20:1B:C9:FF:FF:FF.
Is 20:1B:C9 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 Juniper Networks have?
Juniper Networks holds 220 registered prefixes in total – the full list is on the vendor page.