MAC prefix 18:EF:C0
| Vendor | Sercomm Japan Corporation |
|---|---|
| Short name | SercommJapan |
| Prefix | 18:EF:C0/24 |
| Block type | MA-L (/24, 16,777,216 addresses) |
| Address range | 18:EF:C0:00:00:00 – 18:EF:C0:FF:FF:FF |
| Notations | 18:EF:C0:00:00:0018-EF-C0-00-00-0018ef.c000.000018EFC0000000 |
Frequently asked questions
Which vendor does MAC address 18:EF:C0 belong to?
MAC addresses starting with 18:EF:C0 are assigned to Sercomm Japan Corporation according to the IEEE registry (prefix length 24 bits).
How many addresses does block 18:EF:C0 contain?
The block contains 16,777,216 addresses from 18:EF:C0:00:00:00 to 18:EF:C0:FF:FF:FF.
Is 18:EF:C0 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 Sercomm Japan Corporation have?
Sercomm Japan Corporation holds 4 registered prefixes in total – the full list is on the vendor page.