B4:DF:43:3 Hangzhou Huasu Technology CO., LTD.
Every MAC address from B4:DF:43:30:00:00 to B4:DF:43:3F:FF:FF belongs to a block the IEEE assigned to Hangzhou Huasu Technology CO., LTD.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who B4:DF:43:3 belongs to
Written B4:DF:43:3, B4-DF-43-3 or B4DF433, depending on the system. Look up a full address.
Prefix
B4:DF:43:3/28
Organization
Hangzhou Huasu Technology CO., LTD.
Registry
MA-M (28 bits)
Addresses
1,048,576
First address
B4:DF:43:30:00:00
Last address
B4:DF:43:3F:FF:FF
Address type
Globally unique, unicast
Registered address
2nd & 3rd Floor of No.3 Building, No.1418-50 Moganshan Road, Hangzhou, China Hangzhou CN 310000
Parent block
Inside B4:DF:43
This MA-M block is carved from the 24-bit block B4:DF:43, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.
Same organization
Other blocks assigned to Hangzhou Huasu Technology CO., LTD.
1 more block registered under the same name.