70:B3:D5:7B:4 Zumbach Electronic AG
Every MAC address from 70:B3:D5:7B:40:00 to 70:B3:D5:7B:4F:FF belongs to a block the IEEE assigned to Zumbach Electronic AG. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 70:B3:D5:7B:4 belongs to
Written 70:B3:D5:7B:4, 70-B3-D5-7B-4 or 70B3D57B4, depending on the system. Look up a full address.
Prefix
70:B3:D5:7B:4/36
Organization
Zumbach Electronic AG
Registry
MA-S (36 bits)
Addresses
4,096
First address
70:B3:D5:7B:40:00
Last address
70:B3:D5:7B:4F:FF
Address type
Globally unique, unicast
Registered address
Hauptstrasse 93 Orpund Bern CH 2552
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.
Same organization
Other blocks assigned to Zumbach Electronic AG
5 more blocks registered under the same name.