Which company owns MAC address prefix D8:A5:34?

MAC address prefix D8:A5:34 is registered to Spectronix Corporation in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with D8:A5:34 has a network interface built by Spectronix Corporation.

What is the OUI D8:A5:34?

D8:A5:34 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Spectronix Corporation. It covers every address from D8:A5:34:00:00:00 to D8:A5:34:FF:FF:FF, or 16,777,216 addresses in total. It is also written D8-A5-34.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in D8:A5:34:00:00:00 that is D8: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 Spectronix Corporation located?

Spectronix Corporation is listed at 3-28-15, Tarumi-cho Suita-city Osaka JP 564-0062 in the IEEE OUI registry entry for D8:A5:34. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Spectronix Corporation

MAC address prefix D8:A5:34 is registered to Spectronix Corporation in the IEEE OUI registry. Any device whose MAC address begins with D8:A5:34 has a network interface built by Spectronix Corporation. 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:A5:34:00:00:00 to D8:A5:34:FF:FF:FF.

OUI prefix: D8:A5:34
Hyphen form: D8-A5-34
MAC range: D8:A5:34:00:00:00 – D8:A5:34:FF:FF:FF
Addresses in block: 16,777,216
Organization: Spectronix Corporation
Address: 3-28-15, Tarumi-cho Suita-city Osaka JP 564-0062
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 "Spectronix Corporation"
archived source →
2026-07-17Assigned to "Spectronix Corporation"

Nearby in the registry

The prefixes assigned immediately before and after D8:A5:34:

FAQ

Which company owns MAC address prefix D8:A5:34?: MAC address prefix D8:A5:34 is registered to Spectronix Corporation in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with D8:A5:34 has a network interface built by Spectronix Corporation.
What is the OUI D8:A5:34?: D8:A5:34 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Spectronix Corporation. It covers every address from D8:A5:34:00:00:00 to D8:A5:34:FF:FF:FF, or 16,777,216 addresses in total. It is also written D8-A5-34.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in D8:A5:34:00:00:00 that is D8: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 Spectronix Corporation located?: Spectronix Corporation is listed at 3-28-15, Tarumi-cho Suita-city Osaka JP 564-0062 in the IEEE OUI registry entry for D8:A5:34. This is the address the organization registered with the IEEE, which may differ from its current operating address.