Which company owns MAC address prefix 50:04:01?

MAC address prefix 50:04:01 is registered to TelHi Corporation in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 50:04:01 has a network interface built by TelHi Corporation.

What is the OUI 50:04:01?

50:04:01 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to TelHi Corporation. It covers every address from 50:04:01:00:00:00 to 50:04:01:FF:FF:FF, or 16,777,216 addresses in total. It is also written 50-04-01.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 50:04:01:00:00:00 that is 50:04:01 — 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 TelHi Corporation located?

TelHi Corporation is listed at 1-32-2, Kosuge Katsushika-ku Tokyo JP 1240001 in the IEEE OUI registry entry for 50:04:01. This is the address the organization registered with the IEEE, which may differ from its current operating address.

TelHi Corporation

MAC address prefix 50:04:01 is registered to TelHi Corporation in the IEEE OUI registry. Any device whose MAC address begins with 50:04:01 has a network interface built by TelHi Corporation. 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 50:04:01:00:00:00 to 50:04:01:FF:FF:FF.

OUI prefix: 50:04:01
Hyphen form: 50-04-01
MAC range: 50:04:01:00:00:00 – 50:04:01:FF:FF:FF
Addresses in block: 16,777,216
Organization: TelHi Corporation
Address: 1-32-2, Kosuge Katsushika-ku Tokyo JP 1240001
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.

2024-09-17Assigned to "TelHi Corporation"
archived source →
2026-07-17Assigned to "TelHi Corporation"

Nearby in the registry

The prefixes assigned immediately before and after 50:04:01:

FAQ

Which company owns MAC address prefix 50:04:01?: MAC address prefix 50:04:01 is registered to TelHi Corporation in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 50:04:01 has a network interface built by TelHi Corporation.
What is the OUI 50:04:01?: 50:04:01 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to TelHi Corporation. It covers every address from 50:04:01:00:00:00 to 50:04:01:FF:FF:FF, or 16,777,216 addresses in total. It is also written 50-04-01.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 50:04:01:00:00:00 that is 50:04:01 — 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 TelHi Corporation located?: TelHi Corporation is listed at 1-32-2, Kosuge Katsushika-ku Tokyo JP 1240001 in the IEEE OUI registry entry for 50:04:01. This is the address the organization registered with the IEEE, which may differ from its current operating address.