Which company owns MAC address prefix E0:C9:22?

MAC address prefix E0:C9:22 is registered to Jireh Energy Tech., Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with E0:C9:22 has a network interface built by Jireh Energy Tech., Ltd..

What is the OUI E0:C9:22?

E0:C9:22 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Jireh Energy Tech., Ltd.. It covers every address from E0:C9:22:00:00:00 to E0:C9:22:FF:FF:FF, or 16,777,216 addresses in total. It is also written E0-C9-22.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in E0:C9:22:00:00:00 that is E0:C9:22 — 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 Jireh Energy Tech., Ltd. located?

Jireh Energy Tech., Ltd. is listed at #606 Seoul Forest Hallasigmavalley, 325-2 Seoul Seongdong-Gu KR 133-120 in the IEEE OUI registry entry for E0:C9:22. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Jireh Energy Tech., Ltd.

MAC address prefix E0:C9:22 is registered to Jireh Energy Tech., Ltd. in the IEEE OUI registry. Any device whose MAC address begins with E0:C9:22 has a network interface built by Jireh Energy Tech., Ltd.. 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 E0:C9:22:00:00:00 to E0:C9:22:FF:FF:FF.

OUI prefix: E0:C9:22
Hyphen form: E0-C9-22
MAC range: E0:C9:22:00:00:00 – E0:C9:22:FF:FF:FF
Addresses in block: 16,777,216
Organization: Jireh Energy Tech., Ltd.
Address: #606 Seoul Forest Hallasigmavalley, 325-2 Seoul Seongdong-Gu KR 133-120
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 "Jireh Energy Tech., Ltd."
archived source →
2026-07-17Assigned to "Jireh Energy Tech., Ltd."

Nearby in the registry

The prefixes assigned immediately before and after E0:C9:22:

FAQ

Which company owns MAC address prefix E0:C9:22?: MAC address prefix E0:C9:22 is registered to Jireh Energy Tech., Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with E0:C9:22 has a network interface built by Jireh Energy Tech., Ltd..
What is the OUI E0:C9:22?: E0:C9:22 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Jireh Energy Tech., Ltd.. It covers every address from E0:C9:22:00:00:00 to E0:C9:22:FF:FF:FF, or 16,777,216 addresses in total. It is also written E0-C9-22.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in E0:C9:22:00:00:00 that is E0:C9:22 — 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 Jireh Energy Tech., Ltd. located?: Jireh Energy Tech., Ltd. is listed at #606 Seoul Forest Hallasigmavalley, 325-2 Seoul Seongdong-Gu KR 133-120 in the IEEE OUI registry entry for E0:C9:22. This is the address the organization registered with the IEEE, which may differ from its current operating address.