90:21:81:00:00:00 to 90:21:81:FF:FF:FF
Shanghai Huaqin Telecom Technology Co.,Ltd
Inspect this prefixRegistered address
No.1 Building,399 Keyuan Road, Zhangjian Hi-Tech Park,
shanghai shanghai 201203
Block details
- Registry
- MA-L, MAC Address Block Large (OUI)
- Prefix
- 90:21:81 /24
- Addresses in block
- 16,777,216
- Decimal range
- 158,473,572,581,376 to 158,473,589,358,591
- 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 90:21:81:00:00:00 and 90:21:81: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.