Which company owns MAC address prefix C8:BA:E9?

MAC address prefix C8:BA:E9 is registered to QDIS in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with C8:BA:E9 has a network interface built by QDIS.

What is the OUI C8:BA:E9?

C8:BA:E9 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to QDIS. It covers every address from C8:BA:E9:00:00:00 to C8:BA:E9:FF:FF:FF, or 16,777,216 addresses in total. It is also written C8-BA-E9.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in C8:BA:E9:00:00:00 that is C8:BA:E9 — 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 QDIS located?

QDIS is listed at #512, Buliding B, 168 GaSanDigital 1st, GeumChun-Gu SEOUL KR 08507 in the IEEE OUI registry entry for C8:BA:E9. This is the address the organization registered with the IEEE, which may differ from its current operating address.

QDIS

MAC address prefix C8:BA:E9 is registered to QDIS in the IEEE OUI registry. Any device whose MAC address begins with C8:BA:E9 has a network interface built by QDIS. 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:BA:E9:00:00:00 to C8:BA:E9:FF:FF:FF.

OUI prefix: C8:BA:E9
Hyphen form: C8-BA-E9
MAC range: C8:BA:E9:00:00:00 – C8:BA:E9:FF:FF:FF
Addresses in block: 16,777,216
Organization: QDIS
Address: #512, Buliding B, 168 GaSanDigital 1st, GeumChun-Gu SEOUL KR 08507
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.

2018-12-21Assigned to "QDIS"
archived source →
2026-07-17Assigned to "QDIS"

Nearby in the registry

The prefixes assigned immediately before and after C8:BA:E9:

FAQ

Which company owns MAC address prefix C8:BA:E9?: MAC address prefix C8:BA:E9 is registered to QDIS in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with C8:BA:E9 has a network interface built by QDIS.
What is the OUI C8:BA:E9?: C8:BA:E9 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to QDIS. It covers every address from C8:BA:E9:00:00:00 to C8:BA:E9:FF:FF:FF, or 16,777,216 addresses in total. It is also written C8-BA-E9.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in C8:BA:E9:00:00:00 that is C8:BA:E9 — 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 QDIS located?: QDIS is listed at #512, Buliding B, 168 GaSanDigital 1st, GeumChun-Gu SEOUL KR 08507 in the IEEE OUI registry entry for C8:BA:E9. This is the address the organization registered with the IEEE, which may differ from its current operating address.