Which company owns MAC address prefix CC:B3:F8?

MAC address prefix CC:B3:F8 is registered to FUJITSU ISOTEC LIMITED in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with CC:B3:F8 has a network interface built by FUJITSU ISOTEC LIMITED.

What is the OUI CC:B3:F8?

CC:B3:F8 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to FUJITSU ISOTEC LIMITED. It covers every address from CC:B3:F8:00:00:00 to CC:B3:F8:FF:FF:FF, or 16,777,216 addresses in total. It is also written CC-B3-F8.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in CC:B3:F8:00:00:00 that is CC:B3:F8 — 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 FUJITSU ISOTEC LIMITED located?

FUJITSU ISOTEC LIMITED is listed at 135,Higashinozaki,Hobara-machi, Date-shi Fukushima JP 960-0695 in the IEEE OUI registry entry for CC:B3:F8. This is the address the organization registered with the IEEE, which may differ from its current operating address.

FUJITSU ISOTEC LIMITED

MAC address prefix CC:B3:F8 is registered to FUJITSU ISOTEC LIMITED in the IEEE OUI registry. Any device whose MAC address begins with CC:B3:F8 has a network interface built by FUJITSU ISOTEC LIMITED. 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 CC:B3:F8:00:00:00 to CC:B3:F8:FF:FF:FF.

OUI prefix: CC:B3:F8
Hyphen form: CC-B3-F8
MAC range: CC:B3:F8:00:00:00 – CC:B3:F8:FF:FF:FF
Addresses in block: 16,777,216
Organization: FUJITSU ISOTEC LIMITED
Address: 135,Higashinozaki,Hobara-machi, Date-shi Fukushima JP 960-0695
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.

2016-07-29Assigned to "FUJITSU ISOTEC LIMITED"
archived source →
2026-07-17Assigned to "FUJITSU ISOTEC LIMITED"

Nearby in the registry

The prefixes assigned immediately before and after CC:B3:F8:

FAQ

Which company owns MAC address prefix CC:B3:F8?: MAC address prefix CC:B3:F8 is registered to FUJITSU ISOTEC LIMITED in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with CC:B3:F8 has a network interface built by FUJITSU ISOTEC LIMITED.
What is the OUI CC:B3:F8?: CC:B3:F8 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to FUJITSU ISOTEC LIMITED. It covers every address from CC:B3:F8:00:00:00 to CC:B3:F8:FF:FF:FF, or 16,777,216 addresses in total. It is also written CC-B3-F8.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in CC:B3:F8:00:00:00 that is CC:B3:F8 — 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 FUJITSU ISOTEC LIMITED located?: FUJITSU ISOTEC LIMITED is listed at 135,Higashinozaki,Hobara-machi, Date-shi Fukushima JP 960-0695 in the IEEE OUI registry entry for CC:B3:F8. This is the address the organization registered with the IEEE, which may differ from its current operating address.