70:B3:D5:3B:B A-M Systems
Every MAC address from 70:B3:D5:3B:B0:00 to 70:B3:D5:3B:BF:FF belongs to a block the IEEE assigned to A-M Systems. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 70:B3:D5:3B:B belongs to
Written 70:B3:D5:3B:B, 70-B3-D5-3B-B or 70B3D53BB, depending on the system. Look up a full address.
Prefix
70:B3:D5:3B:B/36
Organization
A-M Systems
Registry
MA-S (36 bits)
Addresses
4,096
First address
70:B3:D5:3B:B0:00
Last address
70:B3:D5:3B:BF:FF
Address type
Globally unique, unicast
Registered address
PO BOX 850 Carlsborg WA US 98324
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.