Which company owns MAC address prefix 38:67:93?

MAC address prefix 38:67:93 is registered to Asia Optical Co., Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 38:67:93 has a network interface built by Asia Optical Co., Inc..

What is the OUI 38:67:93?

38:67:93 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Asia Optical Co., Inc.. It covers every address from 38:67:93:00:00:00 to 38:67:93:FF:FF:FF, or 16,777,216 addresses in total. It is also written 38-67-93.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 38:67:93:00:00:00 that is 38:67:93 — 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 Asia Optical Co., Inc. located?

Asia Optical Co., Inc. is listed at No. 22-3 South 2nd Road, T.E.P.Z. Taichung Taiwan TW 42754 in the IEEE OUI registry entry for 38:67:93. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Asia Optical Co., Inc.

MAC address prefix 38:67:93 is registered to Asia Optical Co., Inc. in the IEEE OUI registry. Any device whose MAC address begins with 38:67:93 has a network interface built by Asia Optical Co., 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 38:67:93:00:00:00 to 38:67:93:FF:FF:FF.

OUI prefix: 38:67:93
Hyphen form: 38-67-93
MAC range: 38:67:93:00:00:00 – 38:67:93:FF:FF:FF
Addresses in block: 16,777,216
Organization: Asia Optical Co., Inc.
Address: No. 22-3 South 2nd Road, T.E.P.Z. Taichung Taiwan TW 42754
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 "Asia Optical Co., Inc."
archived source →
2026-07-17Assigned to "Asia Optical Co., Inc."

Nearby in the registry

The prefixes assigned immediately before and after 38:67:93:

FAQ

Which company owns MAC address prefix 38:67:93?: MAC address prefix 38:67:93 is registered to Asia Optical Co., Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 38:67:93 has a network interface built by Asia Optical Co., Inc..
What is the OUI 38:67:93?: 38:67:93 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Asia Optical Co., Inc.. It covers every address from 38:67:93:00:00:00 to 38:67:93:FF:FF:FF, or 16,777,216 addresses in total. It is also written 38-67-93.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 38:67:93:00:00:00 that is 38:67:93 — 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 Asia Optical Co., Inc. located?: Asia Optical Co., Inc. is listed at No. 22-3 South 2nd Road, T.E.P.Z. Taichung Taiwan TW 42754 in the IEEE OUI registry entry for 38:67:93. This is the address the organization registered with the IEEE, which may differ from its current operating address.