OUI Lookup
28b221
Sienda Multimedia Ltd
Manufacturer Information
- OUI Prefix
- 28b221
- Manufacturer
- Sienda Multimedia Ltd
- Address
- Church Path Workshop, Stonepark Ashburton GB TQ13 7RH
- Last updated
- 6/8/2026
Vendor Statistics
- Total prefixes
- 1
- Block type
- MA-L
- Available addresses
- ~16 millones
About prefix 28B221
The OUI prefix 28B221 is assigned to Sienda Multimedia Ltd, based in Church Path Workshop, Stonepark Ashburton GB TQ13 7RH . It is a MA-L type block of 24 bits (first three octets). Allows up to 16 million unique MAC addresses. If you find this prefix on your network, the devices belong to Sienda Multimedia Ltd.