Which company owns MAC address prefix B4:F3:23?

MAC address prefix B4:F3:23 is registered to PETATEL INC. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with B4:F3:23 has a network interface built by PETATEL INC..

What is the OUI B4:F3:23?

B4:F3:23 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to PETATEL INC.. It covers every address from B4:F3:23:00:00:00 to B4:F3:23:FF:FF:FF, or 16,777,216 addresses in total. It is also written B4-F3-23.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in B4:F3:23:00:00:00 that is B4:F3:23 — 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 PETATEL INC. located?

PETATEL INC. is listed at #322 THE O VILLE 720-25, YEOKSAM-DONG GANGNAM-GU SEOUL KR 135080 in the IEEE OUI registry entry for B4:F3:23. This is the address the organization registered with the IEEE, which may differ from its current operating address.

PETATEL INC.

MAC address prefix B4:F3:23 is registered to PETATEL INC. in the IEEE OUI registry. Any device whose MAC address begins with B4:F3:23 has a network interface built by PETATEL 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 B4:F3:23:00:00:00 to B4:F3:23:FF:FF:FF.

OUI prefix: B4:F3:23
Hyphen form: B4-F3-23
MAC range: B4:F3:23:00:00:00 – B4:F3:23:FF:FF:FF
Addresses in block: 16,777,216
Organization: PETATEL INC.
Address: #322 THE O VILLE 720-25, YEOKSAM-DONG GANGNAM-GU SEOUL KR 135080
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 "PETATEL INC."
archived source →
2026-07-17Assigned to "PETATEL INC."

Nearby in the registry

The prefixes assigned immediately before and after B4:F3:23:

FAQ

Which company owns MAC address prefix B4:F3:23?: MAC address prefix B4:F3:23 is registered to PETATEL INC. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with B4:F3:23 has a network interface built by PETATEL INC..
What is the OUI B4:F3:23?: B4:F3:23 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to PETATEL INC.. It covers every address from B4:F3:23:00:00:00 to B4:F3:23:FF:FF:FF, or 16,777,216 addresses in total. It is also written B4-F3-23.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in B4:F3:23:00:00:00 that is B4:F3:23 — 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 PETATEL INC. located?: PETATEL INC. is listed at #322 THE O VILLE 720-25, YEOKSAM-DONG GANGNAM-GU SEOUL KR 135080 in the IEEE OUI registry entry for B4:F3:23. This is the address the organization registered with the IEEE, which may differ from its current operating address.