Which company owns MAC address prefix 24:A5:34?

MAC address prefix 24:A5:34 is registered to SynTrust Tech International Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 24:A5:34 has a network interface built by SynTrust Tech International Ltd..

What is the OUI 24:A5:34?

24:A5:34 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to SynTrust Tech International Ltd.. It covers every address from 24:A5:34:00:00:00 to 24:A5:34:FF:FF:FF, or 16,777,216 addresses in total. It is also written 24-A5-34.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 24:A5:34:00:00:00 that is 24:A5:34 — 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 SynTrust Tech International Ltd. located?

SynTrust Tech International Ltd. is listed at 10F-1, No. 125, Songde Road, Taipei Taiwan TW 110 in the IEEE OUI registry entry for 24:A5:34. This is the address the organization registered with the IEEE, which may differ from its current operating address.

SynTrust Tech International Ltd.

MAC address prefix 24:A5:34 is registered to SynTrust Tech International Ltd. in the IEEE OUI registry. Any device whose MAC address begins with 24:A5:34 has a network interface built by SynTrust Tech International 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 24:A5:34:00:00:00 to 24:A5:34:FF:FF:FF.

OUI prefix: 24:A5:34
Hyphen form: 24-A5-34
MAC range: 24:A5:34:00:00:00 – 24:A5:34:FF:FF:FF
Addresses in block: 16,777,216
Organization: SynTrust Tech International Ltd.
Address: 10F-1, No. 125, Songde Road, Taipei Taiwan TW 110
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 "SynTrust Tech International Ltd."
archived source →
2026-07-17Assigned to "SynTrust Tech International Ltd."

Nearby in the registry

The prefixes assigned immediately before and after 24:A5:34:

FAQ

Which company owns MAC address prefix 24:A5:34?: MAC address prefix 24:A5:34 is registered to SynTrust Tech International Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 24:A5:34 has a network interface built by SynTrust Tech International Ltd..
What is the OUI 24:A5:34?: 24:A5:34 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to SynTrust Tech International Ltd.. It covers every address from 24:A5:34:00:00:00 to 24:A5:34:FF:FF:FF, or 16,777,216 addresses in total. It is also written 24-A5-34.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 24:A5:34:00:00:00 that is 24:A5:34 — 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 SynTrust Tech International Ltd. located?: SynTrust Tech International Ltd. is listed at 10F-1, No. 125, Songde Road, Taipei Taiwan TW 110 in the IEEE OUI registry entry for 24:A5:34. This is the address the organization registered with the IEEE, which may differ from its current operating address.