Which company owns MAC address prefix C0:E0:1C?

MAC address prefix C0:E0:1C is registered to IoT Security Group, SL in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with C0:E0:1C has a network interface built by IoT Security Group, SL.

What is the OUI C0:E0:1C?

C0:E0:1C is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to IoT Security Group, SL. It covers every address from C0:E0:1C:00:00:00 to C0:E0:1C:FF:FF:FF, or 16,777,216 addresses in total. It is also written C0-E0-1C.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in C0:E0:1C:00:00:00 that is C0:E0:1C — 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 IoT Security Group, SL located?

IoT Security Group, SL is listed at Calle Pez Dorado, 27, local 2 Torremolinos Malaga ES 29620 in the IEEE OUI registry entry for C0:E0:1C. This is the address the organization registered with the IEEE, which may differ from its current operating address.

IoT Security Group, SL

MAC address prefix C0:E0:1C is registered to IoT Security Group, SL in the IEEE OUI registry. Any device whose MAC address begins with C0:E0:1C has a network interface built by IoT Security Group, SL. 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 C0:E0:1C:00:00:00 to C0:E0:1C:FF:FF:FF.

OUI prefix: C0:E0:1C
Hyphen form: C0-E0-1C
MAC range: C0:E0:1C:00:00:00 – C0:E0:1C:FF:FF:FF
Addresses in block: 16,777,216
Organization: IoT Security Group, SL
Address: Calle Pez Dorado, 27, local 2 Torremolinos Malaga ES 29620
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 "IoT Security Group, SL"

Nearby in the registry

The prefixes assigned immediately before and after C0:E0:1C:

FAQ

Which company owns MAC address prefix C0:E0:1C?: MAC address prefix C0:E0:1C is registered to IoT Security Group, SL in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with C0:E0:1C has a network interface built by IoT Security Group, SL.
What is the OUI C0:E0:1C?: C0:E0:1C is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to IoT Security Group, SL. It covers every address from C0:E0:1C:00:00:00 to C0:E0:1C:FF:FF:FF, or 16,777,216 addresses in total. It is also written C0-E0-1C.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in C0:E0:1C:00:00:00 that is C0:E0:1C — 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 IoT Security Group, SL located?: IoT Security Group, SL is listed at Calle Pez Dorado, 27, local 2 Torremolinos Malaga ES 29620 in the IEEE OUI registry entry for C0:E0:1C. This is the address the organization registered with the IEEE, which may differ from its current operating address.