MAC prefix D4:40:D0
OCOSMOS Co., LTD
| Vendor | OCOSMOS Co., LTD |
|---|---|
| Short name | OCOSMOS |
| Prefix | D4:40:D0/24 |
| Block type | MA-L (/24, 16,777,216 addresses) |
| Address range | D4:40:D0:00:00:00 – D4:40:D0:FF:FF:FF |
| Notations | D4:40:D0:00:00:00D4-40-D0-00-00-00d440.d000.0000D440D0000000 |
Frequently asked questions
Which vendor does MAC address D4:40:D0 belong to?
MAC addresses starting with D4:40:D0 are assigned to OCOSMOS Co., LTD according to the IEEE registry (prefix length 24 bits).
How many addresses does block D4:40:D0 contain?
The block contains 16,777,216 addresses from D4:40:D0:00:00:00 to D4:40:D0:FF:FF:FF.
Is D4:40:D0 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.