Which company owns MAC address prefix 50:FB:FF?

MAC address prefix 50:FB:FF is registered to Franklin Technology Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 50:FB:FF has a network interface built by Franklin Technology Inc..

What is the OUI 50:FB:FF?

50:FB:FF is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Franklin Technology Inc.. It covers every address from 50:FB:FF:00:00:00 to 50:FB:FF:FF:FF:FF, or 16,777,216 addresses in total. It is also written 50-FB-FF.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 50:FB:FF:00:00:00 that is 50:FB:FF — and look that prefix up in the IEEE OUI registry. If the second-lowest bit of the first octet is set, the address is locally administered (a randomized or private MAC), which belongs to no manufacturer and will not resolve; modern phones and laptops use these by default on each network.

Where is Franklin Technology Inc. located?

Franklin Technology Inc. is listed at 906(Gasan-Dong, JEI Platz), 186, Gasan digital 1-ro, Geumcheon-gu Seoul KR 08502 in the IEEE OUI registry entry for 50:FB:FF. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Franklin Technology Inc.

MAC address prefix 50:FB:FF is registered to Franklin Technology Inc. in the IEEE OUI registry. Any device whose MAC address begins with 50:FB:FF has a network interface built by Franklin Technology Inc.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address — it covers every MAC from 50:FB:FF:00:00:00 to 50:FB:FF:FF:FF:FF.

OUI prefix: 50:FB:FF
Hyphen form: 50-FB-FF
MAC range: 50:FB:FF:00:00:00 – 50:FB:FF:FF:FF:FF
Addresses in block: 16,777,216
Organization: Franklin Technology Inc.
Address: 906(Gasan-Dong, JEI Platz), 186, Gasan digital 1-ro, Geumcheon-gu Seoul KR 08502
Source: IEEE OUI registry

Have a full MAC address? Look it up— we'll also tell you if it's a randomized (private) address rather than a real manufacturer prefix.

Assignment history (2)

The IEEE registry publishes current state only — this is the change record we've kept since we started tracking it daily.

2026-01-08Assigned to "Franklin Technology Inc."
archived source →
2026-07-17Assigned to "Franklin Technology Inc."

Nearby in the registry

The prefixes assigned immediately before and after 50:FB:FF:

FAQ

Which company owns MAC address prefix 50:FB:FF?: MAC address prefix 50:FB:FF is registered to Franklin Technology Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 50:FB:FF has a network interface built by Franklin Technology Inc..
What is the OUI 50:FB:FF?: 50:FB:FF is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Franklin Technology Inc.. It covers every address from 50:FB:FF:00:00:00 to 50:FB:FF:FF:FF:FF, or 16,777,216 addresses in total. It is also written 50-FB-FF.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 50:FB:FF:00:00:00 that is 50:FB:FF — and look that prefix up in the IEEE OUI registry. If the second-lowest bit of the first octet is set, the address is locally administered (a randomized or private MAC), which belongs to no manufacturer and will not resolve; modern phones and laptops use these by default on each network.
Where is Franklin Technology Inc. located?: Franklin Technology Inc. is listed at 906(Gasan-Dong, JEI Platz), 186, Gasan digital 1-ro, Geumcheon-gu Seoul KR 08502 in the IEEE OUI registry entry for 50:FB:FF. This is the address the organization registered with the IEEE, which may differ from its current operating address.