MAC prefix 30:EF:D1
Alstom Strongwish (Shenzhen) Co., Ltd.
| Vendor | Alstom Strongwish (Shenzhen) Co., Ltd. |
|---|---|
| Short name | AlstomStrong |
| Prefix | 30:EF:D1/24 |
| Block type | MA-L (/24, 16,777,216 addresses) |
| Address range | 30:EF:D1:00:00:00 – 30:EF:D1:FF:FF:FF |
| Notations | 30:EF:D1:00:00:0030-EF-D1-00-00-0030ef.d100.000030EFD1000000 |
Frequently asked questions
Which vendor does MAC address 30:EF:D1 belong to?
MAC addresses starting with 30:EF:D1 are assigned to Alstom Strongwish (Shenzhen) Co., Ltd. according to the IEEE registry (prefix length 24 bits).
How many addresses does block 30:EF:D1 contain?
The block contains 16,777,216 addresses from 30:EF:D1:00:00:00 to 30:EF:D1:FF:FF:FF.
Is 30:EF:D1 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 Alstom Strongwish (Shenzhen) Co., Ltd. have?
Alstom Strongwish (Shenzhen) Co., Ltd. holds 2 registered prefixes in total – the full list is on the vendor page.