Which company owns MAC address prefix 18:95:78?

MAC address prefix 18:95:78 is registered to DENSO CORPORATION in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 18:95:78 has a network interface built by DENSO CORPORATION.

What is the OUI 18:95:78?

18:95:78 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to DENSO CORPORATION. It covers every address from 18:95:78:00:00:00 to 18:95:78:FF:FF:FF, or 16,777,216 addresses in total. It is also written 18-95-78.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 18:95:78:00:00:00 that is 18:95:78 — 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 DENSO CORPORATION located?

DENSO CORPORATION is listed at 1-1, Showa-cho Kariya Aichi JP 448-8661 in the IEEE OUI registry entry for 18:95:78. This is the address the organization registered with the IEEE, which may differ from its current operating address.

How many MAC prefixes does DENSO CORPORATION own?

DENSO CORPORATION holds 2 OUI prefixes in the IEEE registry, of which 18:95:78 is one. A device made by DENSO CORPORATION could carry a MAC address from any of them.

DENSO CORPORATION

MAC address prefix 18:95:78 is registered to DENSO CORPORATION in the IEEE OUI registry. Any device whose MAC address begins with 18:95:78 has a network interface built by DENSO 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 18:95:78:00:00:00 to 18:95:78:FF:FF:FF.

OUI prefix: 18:95:78
Hyphen form: 18-95-78
MAC range: 18:95:78:00:00:00 – 18:95:78:FF:FF:FF
Addresses in block: 16,777,216
Organization: DENSO CORPORATION
Address: 1-1, Showa-cho Kariya Aichi JP 448-8661
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.

Other prefixes from DENSO CORPORATION

DENSO CORPORATION holds 2 OUI prefixes in total. A device with this exact prefix could just as well carry any of these:

00:C0:59

Assignment history (3)

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 "DENSO Corporation"
archived source →
2025-08-23Renamed from "DENSO Corporation" to "DENSO CORPORATION"
archived source →
2026-07-17Assigned to "DENSO CORPORATION"

Nearby in the registry

The prefixes assigned immediately before and after 18:95:78:

FAQ

Which company owns MAC address prefix 18:95:78?: MAC address prefix 18:95:78 is registered to DENSO CORPORATION in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 18:95:78 has a network interface built by DENSO CORPORATION.
What is the OUI 18:95:78?: 18:95:78 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to DENSO CORPORATION. It covers every address from 18:95:78:00:00:00 to 18:95:78:FF:FF:FF, or 16,777,216 addresses in total. It is also written 18-95-78.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 18:95:78:00:00:00 that is 18:95:78 — 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 DENSO CORPORATION located?: DENSO CORPORATION is listed at 1-1, Showa-cho Kariya Aichi JP 448-8661 in the IEEE OUI registry entry for 18:95:78. This is the address the organization registered with the IEEE, which may differ from its current operating address.
How many MAC prefixes does DENSO CORPORATION own?: DENSO CORPORATION holds 2 OUI prefixes in the IEEE registry, of which 18:95:78 is one. A device made by DENSO CORPORATION could carry a MAC address from any of them.