Which company owns MAC address prefix 34:BA:51?

MAC address prefix 34:BA:51 is registered to Se-Kure Controls, Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 34:BA:51 has a network interface built by Se-Kure Controls, Inc..

What is the OUI 34:BA:51?

34:BA:51 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Se-Kure Controls, Inc.. It covers every address from 34:BA:51:00:00:00 to 34:BA:51:FF:FF:FF, or 16,777,216 addresses in total. It is also written 34-BA-51.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 34:BA:51:00:00:00 that is 34:BA:51 — 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 Se-Kure Controls, Inc. located?

Se-Kure Controls, Inc. is listed at 3714 Runge Street Franklin Park IL US 60131 in the IEEE OUI registry entry for 34:BA:51. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Se-Kure Controls, Inc.

MAC address prefix 34:BA:51 is registered to Se-Kure Controls, Inc. in the IEEE OUI registry. Any device whose MAC address begins with 34:BA:51 has a network interface built by Se-Kure Controls, 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 34:BA:51:00:00:00 to 34:BA:51:FF:FF:FF.

OUI prefix: 34:BA:51
Hyphen form: 34-BA-51
MAC range: 34:BA:51:00:00:00 – 34:BA:51:FF:FF:FF
Addresses in block: 16,777,216
Organization: Se-Kure Controls, Inc.
Address: 3714 Runge Street Franklin Park IL US 60131
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 "Se-Kure Controls, Inc."
archived source →
2026-07-17Assigned to "Se-Kure Controls, Inc."

Nearby in the registry

The prefixes assigned immediately before and after 34:BA:51:

FAQ

Which company owns MAC address prefix 34:BA:51?: MAC address prefix 34:BA:51 is registered to Se-Kure Controls, Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 34:BA:51 has a network interface built by Se-Kure Controls, Inc..
What is the OUI 34:BA:51?: 34:BA:51 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Se-Kure Controls, Inc.. It covers every address from 34:BA:51:00:00:00 to 34:BA:51:FF:FF:FF, or 16,777,216 addresses in total. It is also written 34-BA-51.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 34:BA:51:00:00:00 that is 34:BA:51 — 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 Se-Kure Controls, Inc. located?: Se-Kure Controls, Inc. is listed at 3714 Runge Street Franklin Park IL US 60131 in the IEEE OUI registry entry for 34:BA:51. This is the address the organization registered with the IEEE, which may differ from its current operating address.