Advantech Czech MAC prefix C4:B1:6B — registry assignment identified
Summary
- // what this is
- Advantech Czech is registered to MAC prefix
C4:B1:6Bin the IEEE OUI database. When a device's MAC address begins withC4:B1:6B, that block was registered by Advantech Czech — the OUI identifies the maker of the network hardware, which is not always the brand on the device.
About this vendor.
A MAC address beginning C4:B1:6B matches an IEEE MA-L assignment to Advantech Czech; the supplied records do not identify a device category for this prefix. Advantech Czech s.r.o. is the legal name shown on the company's contacts page, which says it was originally called Conel s.r.o. and is now part of the Advantech family. The page's product context includes ICR-4272, described there as an industrial 5G router, but does not connect it to this prefix.
C4:B1:6B is a 24-bit prefix, leaving 24 suffix bits and 16,777,216 possible suffix values. That is a count of possible values, not a count of devices or shipments. In the first octet C4 (binary 11000100), the Group bit is 0 and the Local bit is 0. Those bits are fixed for an exact literal prefix match; changing either produces a different prefix. A captured match supports the registry assignment only, not a particular device, deployment, or safety status.
- Registry match
- IEEE MA-L assignment to Advantech Czech for
C4:B1:6B[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv - Device category
- Unknown; no device category is mapped to this exact prefix [Unknown] — https://icr.advantech.com/contacts
- Product context
- ICR-4272 is described as an industrial 5G router; no mapping to this prefix is given [Confirmed] — https://icr.advantech.com/contacts
- Country
- Czech Republic is stated on the company contacts page [Confirmed] — https://icr.advantech.com/contacts
- Registry
- MA-L [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Company legal name
- Advantech Czech s.r.o. [Confirmed] — https://icr.advantech.com/contacts
- Country
- Czech Republic [Confirmed] — https://icr.advantech.com/contacts
- Assigned prefix
C4:B1:6B[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Prefix length
- 24 bits; 24 suffix bits allow 16,777,216 possible values [Confirmed] — https://www.rfc-editor.org/rfc/rfc7042.txt
- Device types
- Unknown [Unknown] — https://icr.advantech.com/contacts
- Notable products
- ICR-4272 industrial 5G router; no prefix mapping established [Confirmed] — https://icr.advantech.com/contacts
- Industry
- Cellular routers and industrial connectivity, based on the company's cellular-router portal and described product context [Likely] — https://icr.advantech.com/contacts
- Website
- https://icr.advantech.com/contacts [Confirmed] — https://icr.advantech.com/contacts
- Assignment date
- Assignment dates are unavailable in these IEEE CSV records. [Unknown] — https://standards-oui.ieee.org/oui/oui.csv