Which company owns MAC address prefix 5C:C8:E3?

MAC address prefix 5C:C8:E3 is registered to Shintec Hozumi co.ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 5C:C8:E3 has a network interface built by Shintec Hozumi co.ltd..

What is the OUI 5C:C8:E3?

5C:C8:E3 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Shintec Hozumi co.ltd.. It covers every address from 5C:C8:E3:00:00:00 to 5C:C8:E3:FF:FF:FF, or 16,777,216 addresses in total. It is also written 5C-C8-E3.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 5C:C8:E3:00:00:00 that is 5C:C8:E3 — 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 Shintec Hozumi co.ltd. located?

Shintec Hozumi co.ltd. is listed at neura-machi 3-5-1 Miyoshi Aichi JP 470-0217 in the IEEE OUI registry entry for 5C:C8:E3. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Shintec Hozumi co.ltd.

MAC address prefix 5C:C8:E3 is registered to Shintec Hozumi co.ltd. in the IEEE OUI registry. Any device whose MAC address begins with 5C:C8:E3 has a network interface built by Shintec Hozumi co.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 5C:C8:E3:00:00:00 to 5C:C8:E3:FF:FF:FF.

OUI prefix: 5C:C8:E3
Hyphen form: 5C-C8-E3
MAC range: 5C:C8:E3:00:00:00 – 5C:C8:E3:FF:FF:FF
Addresses in block: 16,777,216
Organization: Shintec Hozumi co.ltd.
Address: neura-machi 3-5-1 Miyoshi Aichi JP 470-0217
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.

2021-02-25Assigned to "Shintec Hozumi co.ltd."
archived source →
2026-07-17Assigned to "Shintec Hozumi co.ltd."

Nearby in the registry

The prefixes assigned immediately before and after 5C:C8:E3:

FAQ

Which company owns MAC address prefix 5C:C8:E3?: MAC address prefix 5C:C8:E3 is registered to Shintec Hozumi co.ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 5C:C8:E3 has a network interface built by Shintec Hozumi co.ltd..
What is the OUI 5C:C8:E3?: 5C:C8:E3 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Shintec Hozumi co.ltd.. It covers every address from 5C:C8:E3:00:00:00 to 5C:C8:E3:FF:FF:FF, or 16,777,216 addresses in total. It is also written 5C-C8-E3.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 5C:C8:E3:00:00:00 that is 5C:C8:E3 — 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 Shintec Hozumi co.ltd. located?: Shintec Hozumi co.ltd. is listed at neura-machi 3-5-1 Miyoshi Aichi JP 470-0217 in the IEEE OUI registry entry for 5C:C8:E3. This is the address the organization registered with the IEEE, which may differ from its current operating address.