70:B3:D5:E7:7 OPTIX JSC
Every MAC address from 70:B3:D5:E7:70:00 to 70:B3:D5:E7:7F:FF belongs to a block the IEEE assigned to OPTIX JSC. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 70:B3:D5:E7:7 belongs to
Written 70:B3:D5:E7:7, 70-B3-D5-E7-7 or 70B3D5E77, depending on the system. Look up a full address.
Prefix
70:B3:D5:E7:7/36
Organization
OPTIX JSC
Registry
MA-S (36 bits)
Addresses
4,096
First address
70:B3:D5:E7:70:00
Last address
70:B3:D5:E7:7F:FF
Address type
Globally unique, unicast
Registered address
19 Kliment Ohridski str. Sofia Sofia BG 1756
Parent block
Inside 70:B3:D5
This MA-S block is carved from the 24-bit block 70:B3:D5, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.