Which company owns MAC address prefix 84:E3:27?

MAC address prefix 84:E3:27 is registered to TAILYN TECHNOLOGIES INC in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 84:E3:27 has a network interface built by TAILYN TECHNOLOGIES INC.

What is the OUI 84:E3:27?

84:E3:27 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to TAILYN TECHNOLOGIES INC. It covers every address from 84:E3:27:00:00:00 to 84:E3:27:FF:FF:FF, or 16,777,216 addresses in total. It is also written 84-E3-27.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 84:E3:27:00:00:00 that is 84:E3:27 — 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 TAILYN TECHNOLOGIES INC located?

TAILYN TECHNOLOGIES INC is listed at NO 10 RUNG-AN ROAD, LU-ZHU DISTRICT TAOYUAN CITY TAIWAN ROC TW 33852 in the IEEE OUI registry entry for 84:E3:27. This is the address the organization registered with the IEEE, which may differ from its current operating address.

TAILYN TECHNOLOGIES INC

MAC address prefix 84:E3:27 is registered to TAILYN TECHNOLOGIES INC in the IEEE OUI registry. Any device whose MAC address begins with 84:E3:27 has a network interface built by TAILYN TECHNOLOGIES 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 84:E3:27:00:00:00 to 84:E3:27:FF:FF:FF.

OUI prefix: 84:E3:27
Hyphen form: 84-E3-27
MAC range: 84:E3:27:00:00:00 – 84:E3:27:FF:FF:FF
Addresses in block: 16,777,216
Organization: TAILYN TECHNOLOGIES INC
Address: NO 10 RUNG-AN ROAD, LU-ZHU DISTRICT TAOYUAN CITY TAIWAN ROC TW 33852
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.

2017-09-08Assigned to "TAILYN TECHNOLOGIES INC"
archived source →
2026-07-17Assigned to "TAILYN TECHNOLOGIES INC"

Nearby in the registry

The prefixes assigned immediately before and after 84:E3:27:

FAQ

Which company owns MAC address prefix 84:E3:27?: MAC address prefix 84:E3:27 is registered to TAILYN TECHNOLOGIES INC in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 84:E3:27 has a network interface built by TAILYN TECHNOLOGIES INC.
What is the OUI 84:E3:27?: 84:E3:27 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to TAILYN TECHNOLOGIES INC. It covers every address from 84:E3:27:00:00:00 to 84:E3:27:FF:FF:FF, or 16,777,216 addresses in total. It is also written 84-E3-27.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 84:E3:27:00:00:00 that is 84:E3:27 — 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 TAILYN TECHNOLOGIES INC located?: TAILYN TECHNOLOGIES INC is listed at NO 10 RUNG-AN ROAD, LU-ZHU DISTRICT TAOYUAN CITY TAIWAN ROC TW 33852 in the IEEE OUI registry entry for 84:E3:27. This is the address the organization registered with the IEEE, which may differ from its current operating address.