AE REFUsol MAC Prefix: Vendor Identified, Device Unknown
Summary
- // what this is
- AE REFUsol is registered to MAC prefix
7C:BD:06in the IEEE OUI database. When a device's MAC address begins with7C:BD:06, that block was registered by AE REFUsol — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- This 24-bit prefix fixes the first octet's Group and Local bits at 0. A changed bit produces a different prefix; the 16,777,216 suffix possibilities do not indicate an observed device or shipment count. RFC 7042 provides general guidance on MAC address interpretation.
About this vendor.
A MAC address beginning with 7C:BD:06 matches an IEEE assignment to AE REFUsol, but the supplied evidence does not identify a device type or product for that prefix. The registry record lists the legal name as AE REFUsol and gives Germany as the country indication; it does not establish current vendor identity or where the address is deployed.
This is a 24-bit MA-L assignment. A matching address must share the first three octets, 7C:BD:06; the remaining 24 bits can take 16,777,216 possible values. That is a count of possible suffixes, not a count of devices or shipments.
The first octet 7C has Group bit 0 and Local bit 0, as reported by the deterministic prefix interpretation. For this exact prefix, those bits are fixed: setting either bit changes the prefix and no longer matches this assignment. RFC 7042 describes the distinction between the Group and Local bits and explains the OUI and longer-prefix structure of 48-bit identifiers.
- Registry match
- AE REFUsol — exact assigned prefix
7C:BD:06. - Device type
- Unknown; no device category is mapped to this prefix by the supplied evidence.
- Prefix length
- 24 bits, leaving 24 suffix bits and 16,777,216 possible suffix values.
- Address bits
- The first octet has Group bit 0 and Local bit 0; either bit changing yields a different prefix.
- Country
- Germany, as indicated in the registry record.
- Registry
- MA-L [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Company
- AE REFUsol [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Prefix
7C:BD:06[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Country
- Germany [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Device type
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Assignment date
- Assignment dates are unavailable in these IEEE CSV records. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv