D4:7C:44:2 YunDing Network Technology (Beijing) Co., Ltd
Every MAC address from D4:7C:44:20:00:00 to D4:7C:44:2F:FF:FF belongs to a block the IEEE assigned to YunDing Network Technology (Beijing) Co., Ltd. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who D4:7C:44:2 belongs to
Written D4:7C:44:2, D4-7C-44-2 or D47C442, depending on the system. Look up a full address.
Prefix
D4:7C:44:2/28
Organization
YunDing Network Technology (Beijing) Co., Ltd
Registry
MA-M (28 bits)
Addresses
1,048,576
First address
D4:7C:44:20:00:00
Last address
D4:7C:44:2F:FF:FF
Address type
Globally unique, unicast
Registered address
A521,Floor 5, Tencent Space Building No.388, Hui long guan East St. Beijing CN 100000
Parent block
Inside D4:7C:44
This MA-M block is carved from the 24-bit block D4:7C:44, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.