Which company owns MAC address prefix 4C:77:4F?

MAC address prefix 4C:77:4F is registered to Embedded Wireless Labs in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 4C:77:4F has a network interface built by Embedded Wireless Labs.

What is the OUI 4C:77:4F?

4C:77:4F is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Embedded Wireless Labs. It covers every address from 4C:77:4F:00:00:00 to 4C:77:4F:FF:FF:FF, or 16,777,216 addresses in total. It is also written 4C-77-4F.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 4C:77:4F:00:00:00 that is 4C:77:4F — 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 Embedded Wireless Labs located?

Embedded Wireless Labs is listed at 702 Level 7 Uptown 2 No.2 Petaling Jaya Selangor MY 47400 in the IEEE OUI registry entry for 4C:77:4F. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Embedded Wireless Labs

MAC address prefix 4C:77:4F is registered to Embedded Wireless Labs in the IEEE OUI registry. Any device whose MAC address begins with 4C:77:4F has a network interface built by Embedded Wireless Labs. 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 4C:77:4F:00:00:00 to 4C:77:4F:FF:FF:FF.

OUI prefix: 4C:77:4F
Hyphen form: 4C-77-4F
MAC range: 4C:77:4F:00:00:00 – 4C:77:4F:FF:FF:FF
Addresses in block: 16,777,216
Organization: Embedded Wireless Labs
Address: 702 Level 7 Uptown 2 No.2 Petaling Jaya Selangor MY 47400
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 "Embedded Wireless Labs"
archived source →
2026-07-17Assigned to "Embedded Wireless Labs"

Nearby in the registry

The prefixes assigned immediately before and after 4C:77:4F:

FAQ

Which company owns MAC address prefix 4C:77:4F?: MAC address prefix 4C:77:4F is registered to Embedded Wireless Labs in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 4C:77:4F has a network interface built by Embedded Wireless Labs.
What is the OUI 4C:77:4F?: 4C:77:4F is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Embedded Wireless Labs. It covers every address from 4C:77:4F:00:00:00 to 4C:77:4F:FF:FF:FF, or 16,777,216 addresses in total. It is also written 4C-77-4F.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 4C:77:4F:00:00:00 that is 4C:77:4F — 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 Embedded Wireless Labs located?: Embedded Wireless Labs is listed at 702 Level 7 Uptown 2 No.2 Petaling Jaya Selangor MY 47400 in the IEEE OUI registry entry for 4C:77:4F. This is the address the organization registered with the IEEE, which may differ from its current operating address.