MAC prefix 20:87:56
| Vendor | Siemens Ag |
|---|---|
| Short name | Siemens |
| Prefix | 20:87:56/24 |
| Block type | MA-L (/24, 16,777,216 addresses) |
| Address range | 20:87:56:00:00:00 – 20:87:56:FF:FF:FF |
| Notations | 20:87:56:00:00:0020-87-56-00-00-002087.5600.0000208756000000 |
Frequently asked questions
Which vendor does MAC address 20:87:56 belong to?
MAC addresses starting with 20:87:56 are assigned to Siemens Ag according to the IEEE registry (prefix length 24 bits).
How many addresses does block 20:87:56 contain?
The block contains 16,777,216 addresses from 20:87:56:00:00:00 to 20:87:56:FF:FF:FF.
Is 20:87:56 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 Siemens Ag have?
Siemens Ag holds 24 registered prefixes in total – the full list is on the vendor page.