MAC prefix FC:4A:E9
| Vendor | Castlenet Technology Inc. |
|---|---|
| Short name | CastlenetTec |
| Prefix | FC:4A:E9/24 |
| Block type | MA-L (/24, 16,777,216 addresses) |
| Address range | FC:4A:E9:00:00:00 – FC:4A:E9:FF:FF:FF |
| Notations | FC:4A:E9:00:00:00FC-4A-E9-00-00-00fc4a.e900.0000FC4AE9000000 |
Frequently asked questions
Which vendor does MAC address FC:4A:E9 belong to?
MAC addresses starting with FC:4A:E9 are assigned to Castlenet Technology Inc. according to the IEEE registry (prefix length 24 bits).
How many addresses does block FC:4A:E9 contain?
The block contains 16,777,216 addresses from FC:4A:E9:00:00:00 to FC:4A:E9:FF:FF:FF.
Is FC:4A:E9 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 Castlenet Technology Inc. have?
Castlenet Technology Inc. holds 5 registered prefixes in total – the full list is on the vendor page.