Which company owns MAC address prefix 30:15:18?

MAC address prefix 30:15:18 is registered to Ubiquitous Communication Co. ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 30:15:18 has a network interface built by Ubiquitous Communication Co. ltd..

What is the OUI 30:15:18?

30:15:18 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Ubiquitous Communication Co. ltd.. It covers every address from 30:15:18:00:00:00 to 30:15:18:FF:FF:FF, or 16,777,216 addresses in total. It is also written 30-15-18.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 30:15:18:00:00:00 that is 30:15:18 — 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 Ubiquitous Communication Co. ltd. located?

Ubiquitous Communication Co. ltd. is listed at JEI Platz RM No.410-1 Seoul KR 153-792 in the IEEE OUI registry entry for 30:15:18. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Ubiquitous Communication Co. ltd.

MAC address prefix 30:15:18 is registered to Ubiquitous Communication Co. ltd. in the IEEE OUI registry. Any device whose MAC address begins with 30:15:18 has a network interface built by Ubiquitous Communication 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 30:15:18:00:00:00 to 30:15:18:FF:FF:FF.

OUI prefix: 30:15:18
Hyphen form: 30-15-18
MAC range: 30:15:18:00:00:00 – 30:15:18:FF:FF:FF
Addresses in block: 16,777,216
Organization: Ubiquitous Communication Co. ltd.
Address: JEI Platz RM No.410-1 Seoul KR 153-792
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 "Ubiquitous Communication Co. ltd."
archived source →
2026-07-17Assigned to "Ubiquitous Communication Co. ltd."

Nearby in the registry

The prefixes assigned immediately before and after 30:15:18:

FAQ

Which company owns MAC address prefix 30:15:18?: MAC address prefix 30:15:18 is registered to Ubiquitous Communication Co. ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 30:15:18 has a network interface built by Ubiquitous Communication Co. ltd..
What is the OUI 30:15:18?: 30:15:18 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Ubiquitous Communication Co. ltd.. It covers every address from 30:15:18:00:00:00 to 30:15:18:FF:FF:FF, or 16,777,216 addresses in total. It is also written 30-15-18.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 30:15:18:00:00:00 that is 30:15:18 — 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 Ubiquitous Communication Co. ltd. located?: Ubiquitous Communication Co. ltd. is listed at JEI Platz RM No.410-1 Seoul KR 153-792 in the IEEE OUI registry entry for 30:15:18. This is the address the organization registered with the IEEE, which may differ from its current operating address.