70:B3:D5:4B:0 Tecogen Inc.
Every MAC address from 70:B3:D5:4B:00:00 to 70:B3:D5:4B:0F:FF belongs to a block the IEEE assigned to Tecogen Inc.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 70:B3:D5:4B:0 belongs to
Written 70:B3:D5:4B:0, 70-B3-D5-4B-0 or 70B3D54B0, depending on the system. Look up a full address.
Prefix
70:B3:D5:4B:0/36
Organization
Tecogen Inc.
Registry
MA-S (36 bits)
Addresses
4,096
First address
70:B3:D5:4B:00:00
Last address
70:B3:D5:4B:0F:FF
Address type
Globally unique, unicast
Registered address
45 First Avenue Waltham MA US 02451
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.