Which company owns MAC address prefix 78:8E:45?

MAC address prefix 78:8E:45 is registered to Jizaie inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 78:8E:45 has a network interface built by Jizaie inc..

What is the OUI 78:8E:45?

78:8E:45 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Jizaie inc.. It covers every address from 78:8E:45:00:00:00 to 78:8E:45:FF:FF:FF, or 16,777,216 addresses in total. It is also written 78-8E-45.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 78:8E:45:00:00:00 that is 78:8E:45 — 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 Jizaie inc. located?

Jizaie inc. is listed at Inspired.Lab 569 Otemachi Building 5F, 1-6-1 Otemachi, Chiyoda-ku, Tokyo 100-0004 Tokyo Tokyo JP 100-0004 in the IEEE OUI registry entry for 78:8E:45. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Jizaie inc.

MAC address prefix 78:8E:45 is registered to Jizaie inc. in the IEEE OUI registry. Any device whose MAC address begins with 78:8E:45 has a network interface built by Jizaie 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 78:8E:45:00:00:00 to 78:8E:45:FF:FF:FF.

OUI prefix: 78:8E:45
Hyphen form: 78-8E-45
MAC range: 78:8E:45:00:00:00 – 78:8E:45:FF:FF:FF
Addresses in block: 16,777,216
Organization: Jizaie inc.
Address: Inspired.Lab 569 Otemachi Building 5F, 1-6-1 Otemachi, Chiyoda-ku, Tokyo 100-0004 Tokyo Tokyo JP 100-0004
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.

2025-08-23Assigned to "Jizaie inc."
archived source →
2026-07-17Assigned to "Jizaie inc."

Nearby in the registry

The prefixes assigned immediately before and after 78:8E:45:

FAQ

Which company owns MAC address prefix 78:8E:45?: MAC address prefix 78:8E:45 is registered to Jizaie inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 78:8E:45 has a network interface built by Jizaie inc..
What is the OUI 78:8E:45?: 78:8E:45 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Jizaie inc.. It covers every address from 78:8E:45:00:00:00 to 78:8E:45:FF:FF:FF, or 16,777,216 addresses in total. It is also written 78-8E-45.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 78:8E:45:00:00:00 that is 78:8E:45 — 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 Jizaie inc. located?: Jizaie inc. is listed at Inspired.Lab 569 Otemachi Building 5F, 1-6-1 Otemachi, Chiyoda-ku, Tokyo 100-0004 Tokyo Tokyo JP 100-0004 in the IEEE OUI registry entry for 78:8E:45. This is the address the organization registered with the IEEE, which may differ from its current operating address.