MAC prefix 4C:81:BE:D
Beijing Cunyin Chengqi Technology Co., Ltd.
| Vendor | Beijing Cunyin Chengqi Technology Co., Ltd. |
|---|---|
| Short name | CunyinChengq |
| Prefix | 4C:81:BE:D/28 |
| Block type | MA-M (/28, 1,048,576 addresses) |
| Address range | 4C:81:BE:D0:00:00 – 4C:81:BE:DF:FF:FF |
| Notations | 4C:81:BE:D0:00:004C-81-BE-D0-00-004c81.bed0.00004C81BED00000 |
Frequently asked questions
Which vendor does MAC address 4C:81:BE:D belong to?
MAC addresses starting with 4C:81:BE:D are assigned to Beijing Cunyin Chengqi Technology Co., Ltd. according to the IEEE registry (prefix length 28 bits).
How many addresses does block 4C:81:BE:D contain?
The block contains 1,048,576 addresses from 4C:81:BE:D0:00:00 to 4C:81:BE:DF:FF:FF.
Is 4C:81:BE:D 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 Beijing Cunyin Chengqi Technology Co., Ltd. have?
Beijing Cunyin Chengqi Technology Co., Ltd. holds 5 registered prefixes in total – the full list is on the vendor page.