MAC prefix 20:AC:9C
China Telecom Corporation Limited
| Vendor | China Telecom Corporation Limited |
|---|---|
| Short name | ChinaTelecom |
| Prefix | 20:AC:9C/24 |
| Block type | MA-L (/24, 16,777,216 addresses) |
| Address range | 20:AC:9C:00:00:00 – 20:AC:9C:FF:FF:FF |
| Notations | 20:AC:9C:00:00:0020-AC-9C-00-00-0020ac.9c00.000020AC9C000000 |
Frequently asked questions
Which vendor does MAC address 20:AC:9C belong to?
MAC addresses starting with 20:AC:9C are assigned to China Telecom Corporation Limited according to the IEEE registry (prefix length 24 bits).
How many addresses does block 20:AC:9C contain?
The block contains 16,777,216 addresses from 20:AC:9C:00:00:00 to 20:AC:9C:FF:FF:FF.
Is 20:AC:9C 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.