Which company owns MAC address prefix 18:10:4E?

MAC address prefix 18:10:4E is registered to CEDINT-UPM in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 18:10:4E has a network interface built by CEDINT-UPM.

What is the OUI 18:10:4E?

18:10:4E is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to CEDINT-UPM. It covers every address from 18:10:4E:00:00:00 to 18:10:4E:FF:FF:FF, or 16,777,216 addresses in total. It is also written 18-10-4E.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 18:10:4E:00:00:00 that is 18:10:4E — 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 CEDINT-UPM located?

CEDINT-UPM is listed at Campus de Montegancedo Madrid ES in the IEEE OUI registry entry for 18:10:4E. This is the address the organization registered with the IEEE, which may differ from its current operating address.

CEDINT-UPM

MAC address prefix 18:10:4E is registered to CEDINT-UPM in the IEEE OUI registry. Any device whose MAC address begins with 18:10:4E has a network interface built by CEDINT-UPM. 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 18:10:4E:00:00:00 to 18:10:4E:FF:FF:FF.

OUI prefix: 18:10:4E
Hyphen form: 18-10-4E
MAC range: 18:10:4E:00:00:00 – 18:10:4E:FF:FF:FF
Addresses in block: 16,777,216
Organization: CEDINT-UPM
Address: Campus de Montegancedo Madrid ES
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 "CEDINT-UPM"
archived source →
2026-07-17Assigned to "CEDINT-UPM"

Nearby in the registry

The prefixes assigned immediately before and after 18:10:4E:

FAQ

Which company owns MAC address prefix 18:10:4E?: MAC address prefix 18:10:4E is registered to CEDINT-UPM in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 18:10:4E has a network interface built by CEDINT-UPM.
What is the OUI 18:10:4E?: 18:10:4E is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to CEDINT-UPM. It covers every address from 18:10:4E:00:00:00 to 18:10:4E:FF:FF:FF, or 16,777,216 addresses in total. It is also written 18-10-4E.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 18:10:4E:00:00:00 that is 18:10:4E — 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 CEDINT-UPM located?: CEDINT-UPM is listed at Campus de Montegancedo Madrid ES in the IEEE OUI registry entry for 18:10:4E. This is the address the organization registered with the IEEE, which may differ from its current operating address.