MAC prefix 40:A5:EF
Shenzhen Four Seas Global Link Network Technology Co., Ltd.
| Vendor | Shenzhen Four Seas Global Link Network Technology Co., Ltd. |
|---|---|
| Short name | FourSeasGlob |
| Prefix | 40:A5:EF/24 |
| Block type | MA-L (/24, 16,777,216 addresses) |
| Address range | 40:A5:EF:00:00:00 – 40:A5:EF:FF:FF:FF |
| Notations | 40:A5:EF:00:00:0040-A5-EF-00-00-0040a5.ef00.000040A5EF000000 |
Frequently asked questions
Which vendor does MAC address 40:A5:EF belong to?
MAC addresses starting with 40:A5:EF are assigned to Shenzhen Four Seas Global Link Network Technology Co., Ltd. according to the IEEE registry (prefix length 24 bits).
How many addresses does block 40:A5:EF contain?
The block contains 16,777,216 addresses from 40:A5:EF:00:00:00 to 40:A5:EF:FF:FF:FF.
Is 40:A5:EF 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 Shenzhen Four Seas Global Link Network Technology Co., Ltd. have?
Shenzhen Four Seas Global Link Network Technology Co., Ltd. holds 4 registered prefixes in total – the full list is on the vendor page.