Which company owns MAC address prefix C8:4D:34?

MAC address prefix C8:4D:34 is registered to LIONS Taiwan Technology Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with C8:4D:34 has a network interface built by LIONS Taiwan Technology Inc..

What is the OUI C8:4D:34?

C8:4D:34 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to LIONS Taiwan Technology Inc.. It covers every address from C8:4D:34:00:00:00 to C8:4D:34:FF:FF:FF, or 16,777,216 addresses in total. It is also written C8-4D-34.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in C8:4D:34:00:00:00 that is C8:4D:34 — 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 LIONS Taiwan Technology Inc. located?

LIONS Taiwan Technology Inc. is listed at 3F-2, 120, Sec. 2, Gongdao 5th Rd. Hsinchu Taiwan TW 30072 in the IEEE OUI registry entry for C8:4D:34. This is the address the organization registered with the IEEE, which may differ from its current operating address.

LIONS Taiwan Technology Inc.

MAC address prefix C8:4D:34 is registered to LIONS Taiwan Technology Inc. in the IEEE OUI registry. Any device whose MAC address begins with C8:4D:34 has a network interface built by LIONS Taiwan 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 C8:4D:34:00:00:00 to C8:4D:34:FF:FF:FF.

OUI prefix: C8:4D:34
Hyphen form: C8-4D-34
MAC range: C8:4D:34:00:00:00 – C8:4D:34:FF:FF:FF
Addresses in block: 16,777,216
Organization: LIONS Taiwan Technology Inc.
Address: 3F-2, 120, Sec. 2, Gongdao 5th Rd. Hsinchu Taiwan TW 30072
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 "LIONS Taiwan Technology Inc."
archived source →
2026-07-17Assigned to "LIONS Taiwan Technology Inc."

Nearby in the registry

The prefixes assigned immediately before and after C8:4D:34:

FAQ

Which company owns MAC address prefix C8:4D:34?: MAC address prefix C8:4D:34 is registered to LIONS Taiwan Technology Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with C8:4D:34 has a network interface built by LIONS Taiwan Technology Inc..
What is the OUI C8:4D:34?: C8:4D:34 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to LIONS Taiwan Technology Inc.. It covers every address from C8:4D:34:00:00:00 to C8:4D:34:FF:FF:FF, or 16,777,216 addresses in total. It is also written C8-4D-34.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in C8:4D:34:00:00:00 that is C8:4D:34 — 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 LIONS Taiwan Technology Inc. located?: LIONS Taiwan Technology Inc. is listed at 3F-2, 120, Sec. 2, Gongdao 5th Rd. Hsinchu Taiwan TW 30072 in the IEEE OUI registry entry for C8:4D:34. This is the address the organization registered with the IEEE, which may differ from its current operating address.