Which company owns MAC address prefix E4:7D:5A?

MAC address prefix E4:7D:5A is registered to Beijing Hanbang Technology Corp. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with E4:7D:5A has a network interface built by Beijing Hanbang Technology Corp..

What is the OUI E4:7D:5A?

E4:7D:5A is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Beijing Hanbang Technology Corp.. It covers every address from E4:7D:5A:00:00:00 to E4:7D:5A:FF:FF:FF, or 16,777,216 addresses in total. It is also written E4-7D-5A.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in E4:7D:5A:00:00:00 that is E4:7D:5A — 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 Beijing Hanbang Technology Corp. located?

Beijing Hanbang Technology Corp. is listed at 4/F,Skirt Building Haidian District Beijing CN 100080 in the IEEE OUI registry entry for E4:7D:5A. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Beijing Hanbang Technology Corp.

MAC address prefix E4:7D:5A is registered to Beijing Hanbang Technology Corp. in the IEEE OUI registry. Any device whose MAC address begins with E4:7D:5A has a network interface built by Beijing Hanbang Technology Corp.. 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 E4:7D:5A:00:00:00 to E4:7D:5A:FF:FF:FF.

OUI prefix: E4:7D:5A
Hyphen form: E4-7D-5A
MAC range: E4:7D:5A:00:00:00 – E4:7D:5A:FF:FF:FF
Addresses in block: 16,777,216
Organization: Beijing Hanbang Technology Corp.
Address: 4/F,Skirt Building Haidian District Beijing CN 100080
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 "Beijing Hanbang Technology Corp."
archived source →
2026-07-17Assigned to "Beijing Hanbang Technology Corp."

Nearby in the registry

The prefixes assigned immediately before and after E4:7D:5A:

FAQ

Which company owns MAC address prefix E4:7D:5A?: MAC address prefix E4:7D:5A is registered to Beijing Hanbang Technology Corp. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with E4:7D:5A has a network interface built by Beijing Hanbang Technology Corp..
What is the OUI E4:7D:5A?: E4:7D:5A is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Beijing Hanbang Technology Corp.. It covers every address from E4:7D:5A:00:00:00 to E4:7D:5A:FF:FF:FF, or 16,777,216 addresses in total. It is also written E4-7D-5A.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in E4:7D:5A:00:00:00 that is E4:7D:5A — 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 Beijing Hanbang Technology Corp. located?: Beijing Hanbang Technology Corp. is listed at 4/F,Skirt Building Haidian District Beijing CN 100080 in the IEEE OUI registry entry for E4:7D:5A. This is the address the organization registered with the IEEE, which may differ from its current operating address.