44:AD:19 XINGFEI （H.K）LIMITED
Every MAC address from 44:AD:19:00:00:00 to 44:AD:19:FF:FF:FF belongs to a block the IEEE assigned to XINGFEI （H.K）LIMITED. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 44:AD:19 belongs to
Written 44:AD:19, 44-AD-19 or 44AD19, depending on the system. Look up a full address.
Prefix
44:AD:19
Organization
XINGFEI （H.K）LIMITED
Registry
MA-L (a 24-bit OUI)
Addresses
16,777,216
First address
44:AD:19:00:00:00
Last address
44:AD:19:FF:FF:FF
Address type
Globally unique, unicast
Registered address
6/F North Tower Wandelai Building No.29 Kejinan 6th Road, Nanshan District,Shenzhen,China Shenzhen CN 518057