40:11:75:3 Beijing Hexinruitong Electric Power Technology Co., Ltd.
Every MAC address from 40:11:75:30:00:00 to 40:11:75:3F:FF:FF belongs to a block the IEEE assigned to Beijing Hexinruitong Electric Power Technology Co., Ltd.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 40:11:75:3 belongs to
Written 40:11:75:3, 40-11-75-3 or 4011753, depending on the system. Look up a full address.
Prefix
40:11:75:3/28
Organization
Beijing Hexinruitong Electric Power Technology Co., Ltd.
Registry
MA-M (28 bits)
Addresses
1,048,576
First address
40:11:75:30:00:00
Last address
40:11:75:3F:FF:FF
Address type
Globally unique, unicast
Registered address
Room 306, 3F, No.16, Shangdi 5 Street, Haidian District Beijing Beijing CN 100085
Parent block
Inside 40:11:75
This MA-M block is carved from the 24-bit block 40:11:75, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.