Which company owns MAC address prefix D8:43:EA?

MAC address prefix D8:43:EA is registered to SY Electronics Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with D8:43:EA has a network interface built by SY Electronics Ltd.

What is the OUI D8:43:EA?

D8:43:EA is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to SY Electronics Ltd. It covers every address from D8:43:EA:00:00:00 to D8:43:EA:FF:FF:FF, or 16,777,216 addresses in total. It is also written D8-43-EA.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in D8:43:EA:00:00:00 that is D8:43:EA — 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 SY Electronics Ltd located?

SY Electronics Ltd is listed at 7 Worrall Street Manchester GB M5 4TH in the IEEE OUI registry entry for D8:43:EA. This is the address the organization registered with the IEEE, which may differ from its current operating address.

SY Electronics Ltd

MAC address prefix D8:43:EA is registered to SY Electronics Ltd in the IEEE OUI registry. Any device whose MAC address begins with D8:43:EA has a network interface built by SY Electronics 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 D8:43:EA:00:00:00 to D8:43:EA:FF:FF:FF.

OUI prefix: D8:43:EA
Hyphen form: D8-43-EA
MAC range: D8:43:EA:00:00:00 – D8:43:EA:FF:FF:FF
Addresses in block: 16,777,216
Organization: SY Electronics Ltd
Address: 7 Worrall Street Manchester GB M5 4TH
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.

2024-02-15Assigned to "SY Electronics Ltd"
archived source →
2026-07-17Assigned to "SY Electronics Ltd"

Nearby in the registry

The prefixes assigned immediately before and after D8:43:EA:

FAQ

Which company owns MAC address prefix D8:43:EA?: MAC address prefix D8:43:EA is registered to SY Electronics Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with D8:43:EA has a network interface built by SY Electronics Ltd.
What is the OUI D8:43:EA?: D8:43:EA is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to SY Electronics Ltd. It covers every address from D8:43:EA:00:00:00 to D8:43:EA:FF:FF:FF, or 16,777,216 addresses in total. It is also written D8-43-EA.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in D8:43:EA:00:00:00 that is D8:43:EA — 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 SY Electronics Ltd located?: SY Electronics Ltd is listed at 7 Worrall Street Manchester GB M5 4TH in the IEEE OUI registry entry for D8:43:EA. This is the address the organization registered with the IEEE, which may differ from its current operating address.