MAC Address Lookup
Find the vendor name of a device by entering an OUI or a MAC address
Advantech Czech
MAC address prefix C4:B1:6B is registered to Advantech Czech, located at Sokolska 71Usti nad Orlici 56204CZ.
This registration is classified as MA-L (Mac Address Block Large) containing approximately 16 million MAC addresses
The prefix was registered on 16 December 2025, and no subsequent updates have been recorded.
OUI: C4:B1:6B
Vendor name: Advantech Czech
Address:
Assignment Type MA-L Sokolska 71
Usti nad Orlici 56204
CZ.
Mac Address Block Large (previously named OUI). Number of address 2^24 (~16 Million)
Initial registration: 16 December 2025
