Which company owns MAC address prefix 00:18:04?

MAC address prefix 00:18:04 is registered to E-TEK DIGITAL TECHNOLOGY LIMITED in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 00:18:04 has a network interface built by E-TEK DIGITAL TECHNOLOGY LIMITED.

What is the OUI 00:18:04?

00:18:04 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to E-TEK DIGITAL TECHNOLOGY LIMITED. It covers every address from 00:18:04:00:00:00 to 00:18:04:FF:FF:FF, or 16,777,216 addresses in total. It is also written 00-18-04.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 00:18:04:00:00:00 that is 00:18:04 — 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 E-TEK DIGITAL TECHNOLOGY LIMITED located?

E-TEK DIGITAL TECHNOLOGY LIMITED is listed at UNIT1520,15/F.,TOWER 2,GRAND CENTURY PLACE,193 PRINCE EDWARD ROAD WEST,KOWLOON, HK in the IEEE OUI registry entry for 00:18:04. This is the address the organization registered with the IEEE, which may differ from its current operating address.

E-TEK DIGITAL TECHNOLOGY LIMITED

MAC address prefix 00:18:04 is registered to E-TEK DIGITAL TECHNOLOGY LIMITED in the IEEE OUI registry. Any device whose MAC address begins with 00:18:04 has a network interface built by E-TEK DIGITAL TECHNOLOGY LIMITED. 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 00:18:04:00:00:00 to 00:18:04:FF:FF:FF.

OUI prefix: 00:18:04
Hyphen form: 00-18-04
MAC range: 00:18:04:00:00:00 – 00:18:04:FF:FF:FF
Addresses in block: 16,777,216
Organization: E-TEK DIGITAL TECHNOLOGY LIMITED
Address: UNIT1520,15/F.,TOWER 2,GRAND CENTURY PLACE,193 PRINCE EDWARD ROAD WEST,KOWLOON, HK
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 "E-TEK DIGITAL TECHNOLOGY LIMITED"
archived source →
2026-07-17Assigned to "E-TEK DIGITAL TECHNOLOGY LIMITED"

Nearby in the registry

The prefixes assigned immediately before and after 00:18:04:

FAQ

Which company owns MAC address prefix 00:18:04?: MAC address prefix 00:18:04 is registered to E-TEK DIGITAL TECHNOLOGY LIMITED in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 00:18:04 has a network interface built by E-TEK DIGITAL TECHNOLOGY LIMITED.
What is the OUI 00:18:04?: 00:18:04 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to E-TEK DIGITAL TECHNOLOGY LIMITED. It covers every address from 00:18:04:00:00:00 to 00:18:04:FF:FF:FF, or 16,777,216 addresses in total. It is also written 00-18-04.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 00:18:04:00:00:00 that is 00:18:04 — 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 E-TEK DIGITAL TECHNOLOGY LIMITED located?: E-TEK DIGITAL TECHNOLOGY LIMITED is listed at UNIT1520,15/F.,TOWER 2,GRAND CENTURY PLACE,193 PRINCE EDWARD ROAD WEST,KOWLOON, HK in the IEEE OUI registry entry for 00:18:04. This is the address the organization registered with the IEEE, which may differ from its current operating address.