AirFiber, Inc. — MAC prefix 00:50:DF identifies an IEEE registry assignment
Summary
- // what this is
- AirFiber is registered to MAC prefix
00:50:DFin the IEEE OUI database. When a device's MAC address begins with00:50:DF, that block was registered by AirFiber — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- The exact 24-bit prefix fixes the first-octet Group and Local bits at zero. The remaining 24 bits permit 16,777,216 suffix values; this is possible address space, not a device or shipment count. A match identifies the registry assignment, not a particular device, product, deployment, or security state.
About this vendor.
A MAC address beginning 00:50:DF matches an IEEE MA-L assignment registered to AirFiber, Inc.; the record does not identify a specific device or product. The assignment is a 24-bit prefix, so it matches addresses whose first three octets are 00:50:DF.
RFC 7042 describes the Group and Local bits in the first octet. For this exact prefix, both are zero. Changing either bit changes the prefix and therefore no longer matches this assignment. The remaining 24 bits allow 16,777,216 possible suffix values; that is an address-space count, not a count of devices or shipments.
A match supports identifying the registry assignment only. It does not establish which product uses the address, whether it is deployed, or the current identity or security state of a device. The IEEE CSV record supplies no assignment date.
- Prefix
00:50:DF(24-bit MA-L) [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Device category
- Unknown; no category is mapped to this exact prefix in the supplied evidence [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Company
- AirFiber, Inc. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Registry
- MA-L [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Prefix
00:50:DF[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Country
- United States [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Industry
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Notable products
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Device types
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Website
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Organization status
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Total prefixes
- 1 [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Assignment date
- Assignment dates are unavailable in these IEEE CSV records. [Unknown] — https://standards-oui.ieee.org/oui/oui.csv