Which company owns MAC address prefix 24:A4:2C?

MAC address prefix 24:A4:2C is registered to NETIO products a.s. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 24:A4:2C has a network interface built by NETIO products a.s..

What is the OUI 24:A4:2C?

24:A4:2C is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to NETIO products a.s.. It covers every address from 24:A4:2C:00:00:00 to 24:A4:2C:FF:FF:FF, or 16,777,216 addresses in total. It is also written 24-A4-2C.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 24:A4:2C:00:00:00 that is 24:A4:2C — 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 NETIO products a.s. located?

NETIO products a.s. is listed at U Pily 3 Prague CZ 143 00 in the IEEE OUI registry entry for 24:A4:2C. This is the address the organization registered with the IEEE, which may differ from its current operating address.

NETIO products a.s.

MAC address prefix 24:A4:2C is registered to NETIO products a.s. in the IEEE OUI registry. Any device whose MAC address begins with 24:A4:2C has a network interface built by NETIO products a.s.. 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:A4:2C:00:00:00 to 24:A4:2C:FF:FF:FF.

OUI prefix: 24:A4:2C
Hyphen form: 24-A4-2C
MAC range: 24:A4:2C:00:00:00 – 24:A4:2C:FF:FF:FF
Addresses in block: 16,777,216
Organization: NETIO products a.s.
Address: U Pily 3 Prague CZ 143 00
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 "NETIO products a.s."

Nearby in the registry

The prefixes assigned immediately before and after 24:A4:2C:

FAQ

Which company owns MAC address prefix 24:A4:2C?: MAC address prefix 24:A4:2C is registered to NETIO products a.s. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 24:A4:2C has a network interface built by NETIO products a.s..
What is the OUI 24:A4:2C?: 24:A4:2C is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to NETIO products a.s.. It covers every address from 24:A4:2C:00:00:00 to 24:A4:2C:FF:FF:FF, or 16,777,216 addresses in total. It is also written 24-A4-2C.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 24:A4:2C:00:00:00 that is 24:A4:2C — 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 NETIO products a.s. located?: NETIO products a.s. is listed at U Pily 3 Prague CZ 143 00 in the IEEE OUI registry entry for 24:A4:2C. This is the address the organization registered with the IEEE, which may differ from its current operating address.