28:B2:21 Sienda Multimedia Ltd
Every MAC address from 28:B2:21:00:00:00 to 28:B2:21:FF:FF:FF belongs to a block the IEEE assigned to Sienda Multimedia Ltd. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 28:B2:21 belongs to
Written 28:B2:21, 28-B2-21 or 28B221, depending on the system. Look up a full address.
Prefix
28:B2:21
Organization
Sienda Multimedia Ltd
Registry
MA-L (a 24-bit OUI)
Addresses
16,777,216
First address
28:B2:21:00:00:00
Last address
28:B2:21:FF:FF:FF
Address type
Globally unique, unicast
Registered address
Church Path Workshop, Stonepark Ashburton GB TQ13 7RH