38:3A:21:00:00:00 to 38:3A:21:0F:FF:FF
R3C Information(Shenzhen) Co.，Ltd.
Inspect this prefixRegistered address
2F,JinHuiQiou Building,Langshan2 Road,Hi-Tech Ind.Park, Nanshan District
Shenzhen GuangDong 86
Block details
- Registry
- MA-M, MAC Address Block Medium (OUI-28)
- Prefix
- 38:3A:21:0 /28
- Addresses in block
- 1,048,576
- Decimal range
- 61,822,312,906,752 to 61,822,313,955,327
- Address type
- Unicast, universally administered
What this block covers
A 28 bit block. Sixteen of these fit inside one 24 bit prefix, so the first three octets are shared with other registrants.
Any MAC address between 38:3A:21:00:00:00 and 38:3A:21:0F:FF:FF belongs to this assignment. The registrant chooses the remaining 20 bits, so the same prefix can appear on very different products from the same company.