Which company owns MAC address prefix 88:3F:37?

MAC address prefix 88:3F:37 is registered to UHTEK CO., LTD. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 88:3F:37 has a network interface built by UHTEK CO., LTD..

What is the OUI 88:3F:37?

88:3F:37 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to UHTEK CO., LTD.. It covers every address from 88:3F:37:00:00:00 to 88:3F:37:FF:FF:FF, or 16,777,216 addresses in total. It is also written 88-3F-37.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 88:3F:37:00:00:00 that is 88:3F:37 — 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 UHTEK CO., LTD. located?

UHTEK CO., LTD. is listed at 403DONG 503HO, 655 PYEONGCHEON-RO BUCHEONSI KYEONGGIDO KR 14502 in the IEEE OUI registry entry for 88:3F:37. This is the address the organization registered with the IEEE, which may differ from its current operating address.

UHTEK CO., LTD.

MAC address prefix 88:3F:37 is registered to UHTEK CO., LTD. in the IEEE OUI registry. Any device whose MAC address begins with 88:3F:37 has a network interface built by UHTEK 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 88:3F:37:00:00:00 to 88:3F:37:FF:FF:FF.

OUI prefix: 88:3F:37
Hyphen form: 88-3F-37
MAC range: 88:3F:37:00:00:00 – 88:3F:37:FF:FF:FF
Addresses in block: 16,777,216
Organization: UHTEK CO., LTD.
Address: 403DONG 503HO, 655 PYEONGCHEON-RO BUCHEONSI KYEONGGIDO KR 14502
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 (1)

The IEEE registry publishes current state only — this is the change record we've kept since we started tracking it daily.

2026-07-17Assigned to "UHTEK CO., LTD."

Nearby in the registry

The prefixes assigned immediately before and after 88:3F:37:

FAQ

Which company owns MAC address prefix 88:3F:37?: MAC address prefix 88:3F:37 is registered to UHTEK CO., LTD. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 88:3F:37 has a network interface built by UHTEK CO., LTD..
What is the OUI 88:3F:37?: 88:3F:37 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to UHTEK CO., LTD.. It covers every address from 88:3F:37:00:00:00 to 88:3F:37:FF:FF:FF, or 16,777,216 addresses in total. It is also written 88-3F-37.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 88:3F:37:00:00:00 that is 88:3F:37 — 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 UHTEK CO., LTD. located?: UHTEK CO., LTD. is listed at 403DONG 503HO, 655 PYEONGCHEON-RO BUCHEONSI KYEONGGIDO KR 14502 in the IEEE OUI registry entry for 88:3F:37. This is the address the organization registered with the IEEE, which may differ from its current operating address.