70:B3:D5:70:8 IBM Research GmbH
Every MAC address from 70:B3:D5:70:80:00 to 70:B3:D5:70:8F:FF belongs to a block the IEEE assigned to IBM Research GmbH. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 70:B3:D5:70:8 belongs to
Written 70:B3:D5:70:8, 70-B3-D5-70-8 or 70B3D5708, depending on the system. Look up a full address.
Prefix
70:B3:D5:70:8/36
Organization
IBM Research GmbH
Registry
MA-S (36 bits)
Addresses
4,096
First address
70:B3:D5:70:80:00
Last address
70:B3:D5:70:8F:FF
Address type
Globally unique, unicast
Registered address
Saeumerstrasse 4 Rueschlikon ZH CH 8803
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.