Which company owns MAC address prefix C4:74:69?

MAC address prefix C4:74:69 is registered to BT9 in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with C4:74:69 has a network interface built by BT9.

What is the OUI C4:74:69?

C4:74:69 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to BT9. It covers every address from C4:74:69:00:00:00 to C4:74:69:FF:FF:FF, or 16,777,216 addresses in total. It is also written C4-74-69.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in C4:74:69:00:00:00 that is C4:74:69 — 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 BT9 located?

BT9 is listed at Dolev 33 Tefen IL 2495900 in the IEEE OUI registry entry for C4:74:69. This is the address the organization registered with the IEEE, which may differ from its current operating address.

BT9

MAC address prefix C4:74:69 is registered to BT9 in the IEEE OUI registry. Any device whose MAC address begins with C4:74:69 has a network interface built by BT9. 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 C4:74:69:00:00:00 to C4:74:69:FF:FF:FF.

OUI prefix: C4:74:69
Hyphen form: C4-74-69
MAC range: C4:74:69:00:00:00 – C4:74:69:FF:FF:FF
Addresses in block: 16,777,216
Organization: BT9
Address: Dolev 33 Tefen IL 2495900
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.

2021-02-25Assigned to "BT9"
archived source →
2026-07-17Assigned to "BT9"

Nearby in the registry

The prefixes assigned immediately before and after C4:74:69:

FAQ

Which company owns MAC address prefix C4:74:69?: MAC address prefix C4:74:69 is registered to BT9 in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with C4:74:69 has a network interface built by BT9.
What is the OUI C4:74:69?: C4:74:69 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to BT9. It covers every address from C4:74:69:00:00:00 to C4:74:69:FF:FF:FF, or 16,777,216 addresses in total. It is also written C4-74-69.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in C4:74:69:00:00:00 that is C4:74:69 — 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 BT9 located?: BT9 is listed at Dolev 33 Tefen IL 2495900 in the IEEE OUI registry entry for C4:74:69. This is the address the organization registered with the IEEE, which may differ from its current operating address.