24:12:81:00:00:00 to 24:12:81:FF:FF:FF
China Mobile Group Device Co.,Ltd.
Inspect this prefixRegistered address
32 Xuanwumen West Street,Xicheng District
Beijing 100053
Block details
- Registry
- MA-L, MAC Address Block Large (OUI)
- Prefix
- 24:12:81 /24
- Addresses in block
- 16,777,216
- Decimal range
- 39,661,892,272,128 to 39,661,909,049,343
- Address type
- Unicast, universally administered
What this block covers
The classic 24 bit OUI. The registrant owns the first three octets and can assign every one of the remaining 16.7 million addresses.
Any MAC address between 24:12:81:00:00:00 and 24:12:81:FF:FF:FF belongs to this assignment. The registrant chooses the remaining 24 bits, so the same prefix can appear on very different products from the same company.