Which company owns MAC address prefix 78:46:C4?

MAC address prefix 78:46:C4 is registered to DAEHAP HYPER-TECH in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 78:46:C4 has a network interface built by DAEHAP HYPER-TECH.

What is the OUI 78:46:C4?

78:46:C4 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to DAEHAP HYPER-TECH. It covers every address from 78:46:C4:00:00:00 to 78:46:C4:FF:FF:FF, or 16,777,216 addresses in total. It is also written 78-46-C4.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 78:46:C4:00:00:00 that is 78:46:C4 — 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 DAEHAP HYPER-TECH located?

DAEHAP HYPER-TECH is listed at #A-805, Woolim Lions Vally 5-cha, #144-3 Sangdaewon-dong, Jungwon-Gu Seongnam US 462-726 in the IEEE OUI registry entry for 78:46:C4. This is the address the organization registered with the IEEE, which may differ from its current operating address.

How many MAC prefixes does DAEHAP HYPER-TECH own?

DAEHAP HYPER-TECH holds 3 OUI prefixes in the IEEE registry, of which 78:46:C4 is one. A device made by DAEHAP HYPER-TECH could carry a MAC address from any of them.

DAEHAP HYPER-TECH

MAC address prefix 78:46:C4 is registered to DAEHAP HYPER-TECH in the IEEE OUI registry. Any device whose MAC address begins with 78:46:C4 has a network interface built by DAEHAP HYPER-TECH. 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 78:46:C4:00:00:00 to 78:46:C4:FF:FF:FF.

OUI prefix: 78:46:C4
Hyphen form: 78-46-C4
MAC range: 78:46:C4:00:00:00 – 78:46:C4:FF:FF:FF
Addresses in block: 16,777,216
Organization: DAEHAP HYPER-TECH
Address: #A-805, Woolim Lions Vally 5-cha, #144-3 Sangdaewon-dong, Jungwon-Gu Seongnam US 462-726
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.

Other prefixes from DAEHAP HYPER-TECH

DAEHAP HYPER-TECH holds 3 OUI prefixes in total. A device with this exact prefix could just as well carry any of these:

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 "DAEHAP HYPER-TECH"
archived source →
2026-07-17Assigned to "DAEHAP HYPER-TECH"

Nearby in the registry

The prefixes assigned immediately before and after 78:46:C4:

FAQ

Which company owns MAC address prefix 78:46:C4?: MAC address prefix 78:46:C4 is registered to DAEHAP HYPER-TECH in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 78:46:C4 has a network interface built by DAEHAP HYPER-TECH.
What is the OUI 78:46:C4?: 78:46:C4 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to DAEHAP HYPER-TECH. It covers every address from 78:46:C4:00:00:00 to 78:46:C4:FF:FF:FF, or 16,777,216 addresses in total. It is also written 78-46-C4.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 78:46:C4:00:00:00 that is 78:46:C4 — 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 DAEHAP HYPER-TECH located?: DAEHAP HYPER-TECH is listed at #A-805, Woolim Lions Vally 5-cha, #144-3 Sangdaewon-dong, Jungwon-Gu Seongnam US 462-726 in the IEEE OUI registry entry for 78:46:C4. This is the address the organization registered with the IEEE, which may differ from its current operating address.
How many MAC prefixes does DAEHAP HYPER-TECH own?: DAEHAP HYPER-TECH holds 3 OUI prefixes in the IEEE registry, of which 78:46:C4 is one. A device made by DAEHAP HYPER-TECH could carry a MAC address from any of them.