Which company owns MAC address prefix F4:49:55?

MAC address prefix F4:49:55 is registered to MIMO TECH Co., Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with F4:49:55 has a network interface built by MIMO TECH Co., Ltd..

What is the OUI F4:49:55?

F4:49:55 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to MIMO TECH Co., Ltd.. It covers every address from F4:49:55:00:00:00 to F4:49:55:FF:FF:FF, or 16,777,216 addresses in total. It is also written F4-49-55.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in F4:49:55:00:00:00 that is F4:49:55 — 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 MIMO TECH Co., Ltd. located?

MIMO TECH Co., Ltd. is listed at 21F.-6, No. 7, Sec. 3, New Taipei Blvd., Xinzhuang Dist., New Taipei City Taiwan TW 24250 in the IEEE OUI registry entry for F4:49:55. This is the address the organization registered with the IEEE, which may differ from its current operating address.

MIMO TECH Co., Ltd.

MAC address prefix F4:49:55 is registered to MIMO TECH Co., Ltd. in the IEEE OUI registry. Any device whose MAC address begins with F4:49:55 has a network interface built by MIMO TECH Co., Ltd.. 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 F4:49:55:00:00:00 to F4:49:55:FF:FF:FF.

OUI prefix: F4:49:55
Hyphen form: F4-49-55
MAC range: F4:49:55:00:00:00 – F4:49:55:FF:FF:FF
Addresses in block: 16,777,216
Organization: MIMO TECH Co., Ltd.
Address: 21F.-6, No. 7, Sec. 3, New Taipei Blvd., Xinzhuang Dist., New Taipei City Taiwan TW 24250
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.

2020-03-21Assigned to "MIMO TECH Co., Ltd."
archived source →
2026-07-17Assigned to "MIMO TECH Co., Ltd."

Nearby in the registry

The prefixes assigned immediately before and after F4:49:55:

FAQ

Which company owns MAC address prefix F4:49:55?: MAC address prefix F4:49:55 is registered to MIMO TECH Co., Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with F4:49:55 has a network interface built by MIMO TECH Co., Ltd..
What is the OUI F4:49:55?: F4:49:55 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to MIMO TECH Co., Ltd.. It covers every address from F4:49:55:00:00:00 to F4:49:55:FF:FF:FF, or 16,777,216 addresses in total. It is also written F4-49-55.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in F4:49:55:00:00:00 that is F4:49:55 — 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 MIMO TECH Co., Ltd. located?: MIMO TECH Co., Ltd. is listed at 21F.-6, No. 7, Sec. 3, New Taipei Blvd., Xinzhuang Dist., New Taipei City Taiwan TW 24250 in the IEEE OUI registry entry for F4:49:55. This is the address the organization registered with the IEEE, which may differ from its current operating address.