Which company owns MAC address prefix 54:78:85?

MAC address prefix 54:78:85 is registered to SHENZHEN GIEC DIGITAL CO.,LTD in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 54:78:85 has a network interface built by SHENZHEN GIEC DIGITAL CO.,LTD.

What is the OUI 54:78:85?

54:78:85 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to SHENZHEN GIEC DIGITAL CO.,LTD. It covers every address from 54:78:85:00:00:00 to 54:78:85:FF:FF:FF, or 16,777,216 addresses in total. It is also written 54-78-85.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 54:78:85:00:00:00 that is 54:78:85 — 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 GIEC DIGITAL CO.,LTD located?

SHENZHEN GIEC DIGITAL CO.,LTD is listed at 1st&3rd Building,No.26 Puzai Road, Pingdi, Longgang SHENZHEN Guanggong CN 518117 in the IEEE OUI registry entry for 54:78:85. This is the address the organization registered with the IEEE, which may differ from its current operating address.

SHENZHEN GIEC DIGITAL CO.,LTD

MAC address prefix 54:78:85 is registered to SHENZHEN GIEC DIGITAL CO.,LTD in the IEEE OUI registry. Any device whose MAC address begins with 54:78:85 has a network interface built by SHENZHEN GIEC DIGITAL 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 54:78:85:00:00:00 to 54:78:85:FF:FF:FF.

OUI prefix: 54:78:85
Hyphen form: 54-78-85
MAC range: 54:78:85:00:00:00 – 54:78:85:FF:FF:FF
Addresses in block: 16,777,216
Organization: SHENZHEN GIEC DIGITAL CO.,LTD
Address: 1st&3rd Building,No.26 Puzai Road, Pingdi, Longgang SHENZHEN Guanggong CN 518117
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.

2024-02-15Assigned to "SHENZHEN GIEC DIGITAL CO.,LTD"
archived source →
2026-07-17Assigned to "SHENZHEN GIEC DIGITAL CO.,LTD"

Nearby in the registry

The prefixes assigned immediately before and after 54:78:85:

FAQ

Which company owns MAC address prefix 54:78:85?: MAC address prefix 54:78:85 is registered to SHENZHEN GIEC DIGITAL CO.,LTD in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 54:78:85 has a network interface built by SHENZHEN GIEC DIGITAL CO.,LTD.
What is the OUI 54:78:85?: 54:78:85 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to SHENZHEN GIEC DIGITAL CO.,LTD. It covers every address from 54:78:85:00:00:00 to 54:78:85:FF:FF:FF, or 16,777,216 addresses in total. It is also written 54-78-85.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 54:78:85:00:00:00 that is 54:78:85 — 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 GIEC DIGITAL CO.,LTD located?: SHENZHEN GIEC DIGITAL CO.,LTD is listed at 1st&3rd Building,No.26 Puzai Road, Pingdi, Longgang SHENZHEN Guanggong CN 518117 in the IEEE OUI registry entry for 54:78:85. This is the address the organization registered with the IEEE, which may differ from its current operating address.