Which company owns MAC address prefix E4:77:D4?

MAC address prefix E4:77:D4 is registered to Minrray Industry Co.,Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with E4:77:D4 has a network interface built by Minrray Industry Co.,Ltd.

What is the OUI E4:77:D4?

E4:77:D4 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Minrray Industry Co.,Ltd. It covers every address from E4:77:D4:00:00:00 to E4:77:D4:FF:FF:FF, or 16,777,216 addresses in total. It is also written E4-77-D4.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in E4:77:D4:00:00:00 that is E4:77:D4 — 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 Minrray Industry Co.,Ltd located?

Minrray Industry Co.,Ltd is listed at C5, Building 2, ZhongHaiXin ,Science&Technology Park, Ganli Rd, LiLang Blvd., Buji Shenzhen GuangDong CN 518112 in the IEEE OUI registry entry for E4:77:D4. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Minrray Industry Co.,Ltd

MAC address prefix E4:77:D4 is registered to Minrray Industry Co.,Ltd in the IEEE OUI registry. Any device whose MAC address begins with E4:77:D4 has a network interface built by Minrray Industry 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 E4:77:D4:00:00:00 to E4:77:D4:FF:FF:FF.

OUI prefix: E4:77:D4
Hyphen form: E4-77-D4
MAC range: E4:77:D4:00:00:00 – E4:77:D4:FF:FF:FF
Addresses in block: 16,777,216
Organization: Minrray Industry Co.,Ltd
Address: C5, Building 2, ZhongHaiXin ,Science&Technology Park, Ganli Rd, LiLang Blvd., Buji Shenzhen GuangDong CN 518112
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 "Minrray Industry Co.,Ltd"
archived source →
2026-07-17Assigned to "Minrray Industry Co.,Ltd"

Nearby in the registry

The prefixes assigned immediately before and after E4:77:D4:

FAQ

Which company owns MAC address prefix E4:77:D4?: MAC address prefix E4:77:D4 is registered to Minrray Industry Co.,Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with E4:77:D4 has a network interface built by Minrray Industry Co.,Ltd.
What is the OUI E4:77:D4?: E4:77:D4 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Minrray Industry Co.,Ltd. It covers every address from E4:77:D4:00:00:00 to E4:77:D4:FF:FF:FF, or 16,777,216 addresses in total. It is also written E4-77-D4.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in E4:77:D4:00:00:00 that is E4:77:D4 — 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 Minrray Industry Co.,Ltd located?: Minrray Industry Co.,Ltd is listed at C5, Building 2, ZhongHaiXin ,Science&Technology Park, Ganli Rd, LiLang Blvd., Buji Shenzhen GuangDong CN 518112 in the IEEE OUI registry entry for E4:77:D4. This is the address the organization registered with the IEEE, which may differ from its current operating address.