Which company owns MAC address prefix E4:65:64?

MAC address prefix E4:65:64 is registered to SHENZHEN KTC TECHNOLOGY CO.,LTD in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with E4:65:64 has a network interface built by SHENZHEN KTC TECHNOLOGY CO.,LTD.

What is the OUI E4:65:64?

E4:65:64 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to SHENZHEN KTC TECHNOLOGY CO.,LTD. It covers every address from E4:65:64:00:00:00 to E4:65:64:FF:FF:FF, or 16,777,216 addresses in total. It is also written E4-65-64.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in E4:65:64:00:00:00 that is E4:65:64 — 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 SHENZHEN KTC TECHNOLOGY CO.,LTD located?

SHENZHEN KTC TECHNOLOGY CO.,LTD is listed at Add: NO.4023, Wuhe Road, Bantian, Longgang District, Shenzhen, China SHEN ZHEN GUANG DONG CN 518100 in the IEEE OUI registry entry for E4:65:64. This is the address the organization registered with the IEEE, which may differ from its current operating address.

SHENZHEN KTC TECHNOLOGY CO.,LTD

MAC address prefix E4:65:64 is registered to SHENZHEN KTC TECHNOLOGY CO.,LTD in the IEEE OUI registry. Any device whose MAC address begins with E4:65:64 has a network interface built by SHENZHEN KTC TECHNOLOGY CO.,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 E4:65:64:00:00:00 to E4:65:64:FF:FF:FF.

OUI prefix: E4:65:64
Hyphen form: E4-65-64
MAC range: E4:65:64:00:00:00 – E4:65:64:FF:FF:FF
Addresses in block: 16,777,216
Organization: SHENZHEN KTC TECHNOLOGY CO.,LTD
Address: Add: NO.4023, Wuhe Road, Bantian, Longgang District, Shenzhen, China SHEN ZHEN GUANG DONG CN 518100
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 (1)

The IEEE registry publishes current state only — this is the change record we've kept since we started tracking it daily.

2026-07-17Assigned to "SHENZHEN KTC TECHNOLOGY CO.,LTD"

Nearby in the registry

The prefixes assigned immediately before and after E4:65:64:

FAQ

Which company owns MAC address prefix E4:65:64?: MAC address prefix E4:65:64 is registered to SHENZHEN KTC TECHNOLOGY CO.,LTD in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with E4:65:64 has a network interface built by SHENZHEN KTC TECHNOLOGY CO.,LTD.
What is the OUI E4:65:64?: E4:65:64 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to SHENZHEN KTC TECHNOLOGY CO.,LTD. It covers every address from E4:65:64:00:00:00 to E4:65:64:FF:FF:FF, or 16,777,216 addresses in total. It is also written E4-65-64.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in E4:65:64:00:00:00 that is E4:65:64 — 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 SHENZHEN KTC TECHNOLOGY CO.,LTD located?: SHENZHEN KTC TECHNOLOGY CO.,LTD is listed at Add: NO.4023, Wuhe Road, Bantian, Longgang District, Shenzhen, China SHEN ZHEN GUANG DONG CN 518100 in the IEEE OUI registry entry for E4:65:64. This is the address the organization registered with the IEEE, which may differ from its current operating address.