70:B3:D5:4B:D Boulder Amplifiers, Inc.
Every MAC address from 70:B3:D5:4B:D0:00 to 70:B3:D5:4B:DF:FF belongs to a block the IEEE assigned to Boulder Amplifiers, Inc.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 70:B3:D5:4B:D belongs to
Written 70:B3:D5:4B:D, 70-B3-D5-4B-D or 70B3D54BD, depending on the system. Look up a full address.
Prefix
70:B3:D5:4B:D/36
Organization
Boulder Amplifiers, Inc.
Registry
MA-S (36 bits)
Addresses
4,096
First address
70:B3:D5:4B:D0:00
Last address
70:B3:D5:4B:DF:FF
Address type
Globally unique, unicast
Registered address
3225 Prairie Avenue Boulder CO US 80301
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.