Which company owns MAC address prefix 70:30:5D?

MAC address prefix 70:30:5D is registered to Ubiquoss Inc in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 70:30:5D has a network interface built by Ubiquoss Inc.

What is the OUI 70:30:5D?

70:30:5D is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Ubiquoss Inc. It covers every address from 70:30:5D:00:00:00 to 70:30:5D:FF:FF:FF, or 16,777,216 addresses in total. It is also written 70-30-5D.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 70:30:5D:00:00:00 that is 70:30:5D — 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 Ubiquoss Inc located?

Ubiquoss Inc is listed at 8F Ubiquoss B/D, 68, Pangyo-ro 255beon-gil, Bundang-gu Seongnam-si Gyeonggi-do KR 463-400 in the IEEE OUI registry entry for 70:30:5D. This is the address the organization registered with the IEEE, which may differ from its current operating address.

How many MAC prefixes does Ubiquoss Inc own?

Ubiquoss Inc holds 3 OUI prefixes in the IEEE registry, of which 70:30:5D is one. A device made by Ubiquoss Inc could carry a MAC address from any of them.

Ubiquoss Inc

MAC address prefix 70:30:5D is registered to Ubiquoss Inc in the IEEE OUI registry. Any device whose MAC address begins with 70:30:5D has a network interface built by Ubiquoss Inc. 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 70:30:5D:00:00:00 to 70:30:5D:FF:FF:FF.

OUI prefix: 70:30:5D
Hyphen form: 70-30-5D
MAC range: 70:30:5D:00:00:00 – 70:30:5D:FF:FF:FF
Addresses in block: 16,777,216
Organization: Ubiquoss Inc
Address: 8F Ubiquoss B/D, 68, Pangyo-ro 255beon-gil, Bundang-gu Seongnam-si Gyeonggi-do KR 463-400
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.

Other prefixes from Ubiquoss Inc

Ubiquoss Inc holds 3 OUI prefixes in total. A device with this exact prefix could just as well carry any of these:

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 "Ubiquoss Inc"
archived source →
2026-07-17Assigned to "Ubiquoss Inc"

Nearby in the registry

The prefixes assigned immediately before and after 70:30:5D:

FAQ

Which company owns MAC address prefix 70:30:5D?: MAC address prefix 70:30:5D is registered to Ubiquoss Inc in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 70:30:5D has a network interface built by Ubiquoss Inc.
What is the OUI 70:30:5D?: 70:30:5D is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Ubiquoss Inc. It covers every address from 70:30:5D:00:00:00 to 70:30:5D:FF:FF:FF, or 16,777,216 addresses in total. It is also written 70-30-5D.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 70:30:5D:00:00:00 that is 70:30:5D — 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 Ubiquoss Inc located?: Ubiquoss Inc is listed at 8F Ubiquoss B/D, 68, Pangyo-ro 255beon-gil, Bundang-gu Seongnam-si Gyeonggi-do KR 463-400 in the IEEE OUI registry entry for 70:30:5D. This is the address the organization registered with the IEEE, which may differ from its current operating address.
How many MAC prefixes does Ubiquoss Inc own?: Ubiquoss Inc holds 3 OUI prefixes in the IEEE registry, of which 70:30:5D is one. A device made by Ubiquoss Inc could carry a MAC address from any of them.