Which company owns MAC address prefix DC:FA:D5?

MAC address prefix DC:FA:D5 is registered to STRONG Ges.m.b.H. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with DC:FA:D5 has a network interface built by STRONG Ges.m.b.H..

What is the OUI DC:FA:D5?

DC:FA:D5 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to STRONG Ges.m.b.H.. It covers every address from DC:FA:D5:00:00:00 to DC:FA:D5:FF:FF:FF, or 16,777,216 addresses in total. It is also written DC-FA-D5.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in DC:FA:D5:00:00:00 that is DC:FA:D5 — 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 STRONG Ges.m.b.H. located?

STRONG Ges.m.b.H. is listed at Franz-Josefs-Kai 1 Vienna AT 1010 in the IEEE OUI registry entry for DC:FA:D5. This is the address the organization registered with the IEEE, which may differ from its current operating address.

STRONG Ges.m.b.H.

MAC address prefix DC:FA:D5 is registered to STRONG Ges.m.b.H. in the IEEE OUI registry. Any device whose MAC address begins with DC:FA:D5 has a network interface built by STRONG Ges.m.b.H.. 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 DC:FA:D5:00:00:00 to DC:FA:D5:FF:FF:FF.

OUI prefix: DC:FA:D5
Hyphen form: DC-FA-D5
MAC range: DC:FA:D5:00:00:00 – DC:FA:D5:FF:FF:FF
Addresses in block: 16,777,216
Organization: STRONG Ges.m.b.H.
Address: Franz-Josefs-Kai 1 Vienna AT 1010
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.

2016-07-29Assigned to "STRONG Ges.m.b.H."
archived source →
2026-07-17Assigned to "STRONG Ges.m.b.H."

Nearby in the registry

The prefixes assigned immediately before and after DC:FA:D5:

FAQ

Which company owns MAC address prefix DC:FA:D5?: MAC address prefix DC:FA:D5 is registered to STRONG Ges.m.b.H. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with DC:FA:D5 has a network interface built by STRONG Ges.m.b.H..
What is the OUI DC:FA:D5?: DC:FA:D5 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to STRONG Ges.m.b.H.. It covers every address from DC:FA:D5:00:00:00 to DC:FA:D5:FF:FF:FF, or 16,777,216 addresses in total. It is also written DC-FA-D5.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in DC:FA:D5:00:00:00 that is DC:FA:D5 — 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 STRONG Ges.m.b.H. located?: STRONG Ges.m.b.H. is listed at Franz-Josefs-Kai 1 Vienna AT 1010 in the IEEE OUI registry entry for DC:FA:D5. This is the address the organization registered with the IEEE, which may differ from its current operating address.