70:B3:D5:40:1 CEM Ltd
Every MAC address from 70:B3:D5:40:10:00 to 70:B3:D5:40:1F:FF belongs to a block the IEEE assigned to CEM Ltd. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 70:B3:D5:40:1 belongs to
Written 70:B3:D5:40:1, 70-B3-D5-40-1 or 70B3D5401, depending on the system. Look up a full address.
Prefix
70:B3:D5:40:1/36
Organization
CEM Ltd
Registry
MA-S (36 bits)
Addresses
4,096
First address
70:B3:D5:40:10:00
Last address
70:B3:D5:40:1F:FF
Address type
Globally unique, unicast
Registered address
700 Blue Point Road Holtsville NY US 11742
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 CEM Ltd
1 more block registered under the same name.