What this means
The IEEE assigned the MA-L block 6089B7 to KAEL MÜHENDİSLİK ELEKTRONİK TİCARET SANAYİ LİMİTED ŞİRKETİ. Every network interface they manufacture under this block has a MAC address beginning with these digits, followed by a unique per-device identifier. If a device on your network shows a MAC starting 60:89:B7, it is KAEL MÜHENDİSLİK ELEKTRONİK TİCARET SANAYİ LİMİTED ŞİRKETİ hardware.