B4:21:1D Beijing GuangXin Technology Co., Ltd
Every MAC address from B4:21:1D:00:00:00 to B4:21:1D:FF:FF:FF belongs to a block the IEEE assigned to Beijing GuangXin Technology Co., Ltd. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who B4:21:1D belongs to
Written B4:21:1D, B4-21-1D or B4211D, depending on the system. Look up a full address.
Prefix
B4:21:1D
Organization
Beijing GuangXin Technology Co., Ltd
Registry
MA-L (a 24-bit OUI)
Addresses
16,777,216
First address
B4:21:1D:00:00:00
Last address
B4:21:1D:FF:FF:FF
Address type
Globally unique, unicast
Registered address
Room 313,B Bld,Horizon International Tower,Zhichun Road,6,Haidian District,Beijing City,P.R.China Beijing CN 100086