Alba Fiber Systems Inc. MAC Prefix: Vendor Known, Device Unknown
Summary
- // what this is
- Alba Fiber Systems is registered to MAC prefix
50:A0:BFin the IEEE OUI database. When a device's MAC address begins with50:A0:BF, that block was registered by Alba Fiber Systems — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- A prefix match indicates the registry assignment only; it does not establish a particular device, current vendor identity, deployment, traffic prevalence, or security state.
About this vendor.
A MAC address beginning 50:A0:BF matches an IEEE MA-L assignment to Alba Fiber Systems Inc.; the supplied records do not identify a device category or product using it. This identifies the registered prefix only, not the device’s present owner, deployment, or safety.
The assignment covers the first 24 bits of a 48-bit MAC address. The remaining 24 bits have 16,777,216 possible values, but that is a mathematical range, not a count of devices or shipments. A captured address matching the first three octets is consistent with this assignment; it cannot establish which product or organization currently uses that address.
For this exact prefix, the first octet 0x50 has Group bit 0 and Local bit 0. Changing either bit changes the prefix and no longer gives an exact match to 50:A0:BF. RFC 7042 describes the Group and Local bits and the structure of MAC prefixes. The supplied IEEE CSV record includes no assignment date.
- Prefix
50:A0:BF(MA-L, 24-bit prefix) [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Registry
- MA-L [Confirmed] — 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
- Device types
- Unknown [Unknown] — https://www.rfc-editor.org/rfc/rfc7042.txt