Which company owns MAC address prefix CC:3B:3E?

MAC address prefix CC:3B:3E is registered to Lester Electrical in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with CC:3B:3E has a network interface built by Lester Electrical.

What is the OUI CC:3B:3E?

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

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in CC:3B:3E:00:00:00 that is CC:3B:3E — 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 Lester Electrical located?

Lester Electrical is listed at 625 W A Street Lincoln NE US 68522 in the IEEE OUI registry entry for CC:3B:3E. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Lester Electrical

MAC address prefix CC:3B:3E is registered to Lester Electrical in the IEEE OUI registry. Any device whose MAC address begins with CC:3B:3E has a network interface built by Lester Electrical. 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 CC:3B:3E:00:00:00 to CC:3B:3E:FF:FF:FF.

OUI prefix: CC:3B:3E
Hyphen form: CC-3B-3E
MAC range: CC:3B:3E:00:00:00 – CC:3B:3E:FF:FF:FF
Addresses in block: 16,777,216
Organization: Lester Electrical
Address: 625 W A Street Lincoln NE US 68522
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 "Lester Electrical"
archived source →
2026-07-17Assigned to "Lester Electrical"

Nearby in the registry

The prefixes assigned immediately before and after CC:3B:3E:

FAQ

Which company owns MAC address prefix CC:3B:3E?: MAC address prefix CC:3B:3E is registered to Lester Electrical in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with CC:3B:3E has a network interface built by Lester Electrical.
What is the OUI CC:3B:3E?: CC:3B:3E is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Lester Electrical. It covers every address from CC:3B:3E:00:00:00 to CC:3B:3E:FF:FF:FF, or 16,777,216 addresses in total. It is also written CC-3B-3E.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in CC:3B:3E:00:00:00 that is CC:3B:3E — 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 Lester Electrical located?: Lester Electrical is listed at 625 W A Street Lincoln NE US 68522 in the IEEE OUI registry entry for CC:3B:3E. This is the address the organization registered with the IEEE, which may differ from its current operating address.