OUI Lookup
00187b
4NSYS Co. Ltd.
Manufacturer Information
- OUI Prefix
- 00187b
- Manufacturer
- 4NSYS Co. Ltd.
- Address
- 3F, Hana Bldg Guro-Gu Seoul KR 152-100
- Last updated
- 6/11/2026
Vendor Statistics
- Total prefixes
- 1
- Block type
- MA-L
- Available addresses
- ~16 millones
About prefix 00187B
The OUI prefix 00187B is assigned to 4NSYS Co. Ltd., based in 3F, Hana Bldg Guro-Gu Seoul KR 152-100 . 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 4NSYS Co. Ltd..