Which company owns MAC address prefix 30:83:6B?

MAC address prefix 30:83:6B is registered to SteeRetail Co.,Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 30:83:6B has a network interface built by SteeRetail Co.,Ltd..

What is the OUI 30:83:6B?

30:83:6B is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to SteeRetail Co.,Ltd.. It covers every address from 30:83:6B:00:00:00 to 30:83:6B:FF:FF:FF, or 16,777,216 addresses in total. It is also written 30-83-6B.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 30:83:6B:00:00:00 that is 30:83:6B — 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 SteeRetail Co.,Ltd. located?

SteeRetail Co.,Ltd. is listed at 2-6-1, Kitamigata, Takatsu-ku Kawasaki City Kanagawa Pref. JP 213-8511 in the IEEE OUI registry entry for 30:83:6B. This is the address the organization registered with the IEEE, which may differ from its current operating address.

SteeRetail Co.,Ltd.

MAC address prefix 30:83:6B is registered to SteeRetail Co.,Ltd. in the IEEE OUI registry. Any device whose MAC address begins with 30:83:6B has a network interface built by SteeRetail 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 30:83:6B:00:00:00 to 30:83:6B:FF:FF:FF.

OUI prefix: 30:83:6B
Hyphen form: 30-83-6B
MAC range: 30:83:6B:00:00:00 – 30:83:6B:FF:FF:FF
Addresses in block: 16,777,216
Organization: SteeRetail Co.,Ltd.
Address: 2-6-1, Kitamigata, Takatsu-ku Kawasaki City Kanagawa Pref. JP 213-8511
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 "SteeRetail Co.,Ltd."
archived source →
2026-07-17Assigned to "SteeRetail Co.,Ltd."

Nearby in the registry

The prefixes assigned immediately before and after 30:83:6B:

FAQ

Which company owns MAC address prefix 30:83:6B?: MAC address prefix 30:83:6B is registered to SteeRetail Co.,Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 30:83:6B has a network interface built by SteeRetail Co.,Ltd..
What is the OUI 30:83:6B?: 30:83:6B is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to SteeRetail Co.,Ltd.. It covers every address from 30:83:6B:00:00:00 to 30:83:6B:FF:FF:FF, or 16,777,216 addresses in total. It is also written 30-83-6B.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 30:83:6B:00:00:00 that is 30:83:6B — 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 SteeRetail Co.,Ltd. located?: SteeRetail Co.,Ltd. is listed at 2-6-1, Kitamigata, Takatsu-ku Kawasaki City Kanagawa Pref. JP 213-8511 in the IEEE OUI registry entry for 30:83:6B. This is the address the organization registered with the IEEE, which may differ from its current operating address.