Which company owns MAC address prefix 58:D6:7A?

MAC address prefix 58:D6:7A is registered to TCPlink in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 58:D6:7A has a network interface built by TCPlink.

What is the OUI 58:D6:7A?

58:D6:7A is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to TCPlink. It covers every address from 58:D6:7A:00:00:00 to 58:D6:7A:FF:FF:FF, or 16,777,216 addresses in total. It is also written 58-D6-7A.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 58:D6:7A:00:00:00 that is 58:D6:7A — 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 TCPlink located?

TCPlink is listed at Daerungpost tower 1-cha 1720, 288 digital-ro,Guro-gu seoul KR 08390 in the IEEE OUI registry entry for 58:D6:7A. This is the address the organization registered with the IEEE, which may differ from its current operating address.

TCPlink

MAC address prefix 58:D6:7A is registered to TCPlink in the IEEE OUI registry. Any device whose MAC address begins with 58:D6:7A has a network interface built by TCPlink. 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 58:D6:7A:00:00:00 to 58:D6:7A:FF:FF:FF.

OUI prefix: 58:D6:7A
Hyphen form: 58-D6-7A
MAC range: 58:D6:7A:00:00:00 – 58:D6:7A:FF:FF:FF
Addresses in block: 16,777,216
Organization: TCPlink
Address: Daerungpost tower 1-cha 1720, 288 digital-ro,Guro-gu seoul KR 08390
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 "TCPlink"
archived source →
2026-07-17Assigned to "TCPlink"

Nearby in the registry

The prefixes assigned immediately before and after 58:D6:7A:

FAQ

Which company owns MAC address prefix 58:D6:7A?: MAC address prefix 58:D6:7A is registered to TCPlink in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 58:D6:7A has a network interface built by TCPlink.
What is the OUI 58:D6:7A?: 58:D6:7A is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to TCPlink. It covers every address from 58:D6:7A:00:00:00 to 58:D6:7A:FF:FF:FF, or 16,777,216 addresses in total. It is also written 58-D6-7A.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 58:D6:7A:00:00:00 that is 58:D6:7A — 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 TCPlink located?: TCPlink is listed at Daerungpost tower 1-cha 1720, 288 digital-ro,Guro-gu seoul KR 08390 in the IEEE OUI registry entry for 58:D6:7A. This is the address the organization registered with the IEEE, which may differ from its current operating address.