Which company owns MAC address prefix 34:56:ED?

MAC address prefix 34:56:ED is registered to Goerdyna Group Co., Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 34:56:ED has a network interface built by Goerdyna Group Co., Ltd..

What is the OUI 34:56:ED?

34:56:ED is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Goerdyna Group Co., Ltd.. It covers every address from 34:56:ED:00:00:00 to 34:56:ED:FF:FF:FF, or 16,777,216 addresses in total. It is also written 34-56-ED.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 34:56:ED:00:00:00 that is 34:56:ED — 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 Goerdyna Group Co., Ltd. located?

Goerdyna Group Co., Ltd. is listed at B-726, 14th Floor, No. 30 Qutangxia Road, Shinan District Qingdao City Shandong Province CN 266000 in the IEEE OUI registry entry for 34:56:ED. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Goerdyna Group Co., Ltd.

MAC address prefix 34:56:ED is registered to Goerdyna Group Co., Ltd. in the IEEE OUI registry. Any device whose MAC address begins with 34:56:ED has a network interface built by Goerdyna Group 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 34:56:ED:00:00:00 to 34:56:ED:FF:FF:FF.

OUI prefix: 34:56:ED
Hyphen form: 34-56-ED
MAC range: 34:56:ED:00:00:00 – 34:56:ED:FF:FF:FF
Addresses in block: 16,777,216
Organization: Goerdyna Group Co., Ltd.
Address: B-726, 14th Floor, No. 30 Qutangxia Road, Shinan District Qingdao City Shandong Province CN 266000
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.

2026-01-08Assigned to "Goerdyna Group Co., Ltd"
archived source →
2026-07-17Assigned to "Goerdyna Group Co., Ltd."

Nearby in the registry

The prefixes assigned immediately before and after 34:56:ED:

FAQ

Which company owns MAC address prefix 34:56:ED?: MAC address prefix 34:56:ED is registered to Goerdyna Group Co., Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 34:56:ED has a network interface built by Goerdyna Group Co., Ltd..
What is the OUI 34:56:ED?: 34:56:ED is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Goerdyna Group Co., Ltd.. It covers every address from 34:56:ED:00:00:00 to 34:56:ED:FF:FF:FF, or 16,777,216 addresses in total. It is also written 34-56-ED.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 34:56:ED:00:00:00 that is 34:56:ED — 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 Goerdyna Group Co., Ltd. located?: Goerdyna Group Co., Ltd. is listed at B-726, 14th Floor, No. 30 Qutangxia Road, Shinan District Qingdao City Shandong Province CN 266000 in the IEEE OUI registry entry for 34:56:ED. This is the address the organization registered with the IEEE, which may differ from its current operating address.