Which company owns MAC address prefix B8:DA:F7?

MAC address prefix B8:DA:F7 is registered to Advanced Photonics, Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with B8:DA:F7 has a network interface built by Advanced Photonics, Inc..

What is the OUI B8:DA:F7?

B8:DA:F7 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Advanced Photonics, Inc.. It covers every address from B8:DA:F7:00:00:00 to B8:DA:F7:FF:FF:FF, or 16,777,216 addresses in total. It is also written B8-DA-F7.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in B8:DA:F7:00:00:00 that is B8:DA:F7 — 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 Advanced Photonics, Inc. located?

Advanced Photonics, Inc. is listed at the University of Tokyo, CCR507 Meguro-ku Tokyo JP 153-8904 in the IEEE OUI registry entry for B8:DA:F7. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Advanced Photonics, Inc.

MAC address prefix B8:DA:F7 is registered to Advanced Photonics, Inc. in the IEEE OUI registry. Any device whose MAC address begins with B8:DA:F7 has a network interface built by Advanced Photonics, 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 B8:DA:F7:00:00:00 to B8:DA:F7:FF:FF:FF.

OUI prefix: B8:DA:F7
Hyphen form: B8-DA-F7
MAC range: B8:DA:F7:00:00:00 – B8:DA:F7:FF:FF:FF
Addresses in block: 16,777,216
Organization: Advanced Photonics, Inc.
Address: the University of Tokyo, CCR507 Meguro-ku Tokyo JP 153-8904
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 "Advanced Photonics, Inc."
archived source →
2026-07-17Assigned to "Advanced Photonics, Inc."

Nearby in the registry

The prefixes assigned immediately before and after B8:DA:F7:

FAQ

Which company owns MAC address prefix B8:DA:F7?: MAC address prefix B8:DA:F7 is registered to Advanced Photonics, Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with B8:DA:F7 has a network interface built by Advanced Photonics, Inc..
What is the OUI B8:DA:F7?: B8:DA:F7 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Advanced Photonics, Inc.. It covers every address from B8:DA:F7:00:00:00 to B8:DA:F7:FF:FF:FF, or 16,777,216 addresses in total. It is also written B8-DA-F7.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in B8:DA:F7:00:00:00 that is B8:DA:F7 — 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 Advanced Photonics, Inc. located?: Advanced Photonics, Inc. is listed at the University of Tokyo, CCR507 Meguro-ku Tokyo JP 153-8904 in the IEEE OUI registry entry for B8:DA:F7. This is the address the organization registered with the IEEE, which may differ from its current operating address.