90:4E:91:4 Wrtnode technology Inc.
Every MAC address from 90:4E:91:40:00:00 to 90:4E:91:4F:FF:FF belongs to a block the IEEE assigned to Wrtnode technology Inc.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 90:4E:91:4 belongs to
Written 90:4E:91:4, 90-4E-91-4 or 904E914, depending on the system. Look up a full address.
Prefix
90:4E:91:4/28
Organization
Wrtnode technology Inc.
Registry
MA-M (28 bits)
Addresses
1,048,576
First address
90:4E:91:40:00:00
Last address
90:4E:91:4F:FF:FF
Address type
Globally unique, unicast
Registered address
Dingsi Lu #18, Shahe, Changping Dist. Beijing CN 102209
Parent block
Inside 90:4E:91
This MA-M block is carved from the 24-bit block 90:4E:91, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.