90:F4:21:B Jiangsu MSInfo Technology Co.,Ltd.
Every MAC address from 90:F4:21:B0:00:00 to 90:F4:21:BF:FF:FF belongs to a block the IEEE assigned to Jiangsu MSInfo Technology Co.,Ltd.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 90:F4:21:B belongs to
Written 90:F4:21:B, 90-F4-21-B or 90F421B, depending on the system. Look up a full address.
Prefix
90:F4:21:B/28
Organization
Jiangsu MSInfo Technology Co.,Ltd.
Registry
MA-M (28 bits)
Addresses
1,048,576
First address
90:F4:21:B0:00:00
Last address
90:F4:21:BF:FF:FF
Address type
Globally unique, unicast
Registered address
608, 1st Yinbai Road, Binhu District Wuxi Jiangsu CN 214000
Parent block
Inside 90:F4:21
This MA-M block is carved from the 24-bit block 90:F4:21, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.