A4:9F:89 Shanghai Rui Rui Communication Technology Co.Ltd.
Every MAC address from A4:9F:89:00:00:00 to A4:9F:89:FF:FF:FF belongs to a block the IEEE assigned to Shanghai Rui Rui Communication Technology Co.Ltd.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who A4:9F:89 belongs to
Written A4:9F:89, A4-9F-89 or A49F89, depending on the system. Look up a full address.
Prefix
A4:9F:89
Organization
Shanghai Rui Rui Communication Technology Co.Ltd.
Registry
MA-L (a 24-bit OUI)
Addresses
16,777,216
First address
A4:9F:89:00:00:00
Last address
A4:9F:89:FF:FF:FF
Address type
Globally unique, unicast
Registered address
Room 1130,Building No.1 ShangHai CN 201199