OUI Lookup
281d21
IN ONE SMART TECHNOLOGY(H,K,)LIMITED
Manufacturer Information
- OUI Prefix
- 281d21
- Manufacturer
- IN ONE SMART TECHNOLOGY(H,K,)LIMITED
- Address
- UNIT I 1/F MAU LAM COMM BLDG 16-18 MAU LAM ST JORDAN KL HK HONGKONG HK 999077
- Last updated
- 6/8/2026
Vendor Statistics
- Total prefixes
- 1
- Block type
- MA-L
- Available addresses
- ~16 millones
About prefix 281D21
The OUI prefix 281D21 is assigned to IN ONE SMART TECHNOLOGY(H,K,)LIMITED, based in UNIT I 1/F MAU LAM COMM BLDG 16-18 MAU LAM ST JORDAN KL HK HONGKONG HK 999077 . 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 IN ONE SMART TECHNOLOGY(H,K,)LIMITED.