Which company owns MAC address prefix 24:3F:30?

MAC address prefix 24:3F:30 is registered to Oxygen Broadband s.a. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 24:3F:30 has a network interface built by Oxygen Broadband s.a..

What is the OUI 24:3F:30?

24:3F:30 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Oxygen Broadband s.a.. It covers every address from 24:3F:30:00:00:00 to 24:3F:30:FF:FF:FF, or 16,777,216 addresses in total. It is also written 24-3F-30.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 24:3F:30:00:00:00 that is 24:3F:30 — 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 Oxygen Broadband s.a. located?

Oxygen Broadband s.a. is listed at 2 Messogeion ave., Athens Tower Athens Attiki GR 11527 in the IEEE OUI registry entry for 24:3F:30. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Oxygen Broadband s.a.

MAC address prefix 24:3F:30 is registered to Oxygen Broadband s.a. in the IEEE OUI registry. Any device whose MAC address begins with 24:3F:30 has a network interface built by Oxygen Broadband s.a.. 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 24:3F:30:00:00:00 to 24:3F:30:FF:FF:FF.

OUI prefix: 24:3F:30
Hyphen form: 24-3F-30
MAC range: 24:3F:30:00:00:00 – 24:3F:30:FF:FF:FF
Addresses in block: 16,777,216
Organization: Oxygen Broadband s.a.
Address: 2 Messogeion ave., Athens Tower Athens Attiki GR 11527
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.

2018-12-21Assigned to "Oxygen Broadband s.a."
archived source →
2026-07-17Assigned to "Oxygen Broadband s.a."

Nearby in the registry

The prefixes assigned immediately before and after 24:3F:30:

FAQ

Which company owns MAC address prefix 24:3F:30?: MAC address prefix 24:3F:30 is registered to Oxygen Broadband s.a. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 24:3F:30 has a network interface built by Oxygen Broadband s.a..
What is the OUI 24:3F:30?: 24:3F:30 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Oxygen Broadband s.a.. It covers every address from 24:3F:30:00:00:00 to 24:3F:30:FF:FF:FF, or 16,777,216 addresses in total. It is also written 24-3F-30.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 24:3F:30:00:00:00 that is 24:3F:30 — 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 Oxygen Broadband s.a. located?: Oxygen Broadband s.a. is listed at 2 Messogeion ave., Athens Tower Athens Attiki GR 11527 in the IEEE OUI registry entry for 24:3F:30. This is the address the organization registered with the IEEE, which may differ from its current operating address.