70:B3:D5:84:6 National Time & Signal Corp.
Every MAC address from 70:B3:D5:84:60:00 to 70:B3:D5:84:6F:FF belongs to a block the IEEE assigned to National Time & Signal Corp.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 70:B3:D5:84:6 belongs to
Written 70:B3:D5:84:6, 70-B3-D5-84-6 or 70B3D5846, depending on the system. Look up a full address.
Prefix
70:B3:D5:84:6/36
Organization
National Time & Signal Corp.
Registry
MA-S (36 bits)
Addresses
4,096
First address
70:B3:D5:84:60:00
Last address
70:B3:D5:84:6F:FF
Address type
Globally unique, unicast
Registered address
28045 Oakland Oaks Ct Wixom MI US 48393
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.