MAC address vendor

Advanced Photonics, Inc. — identified by MAC prefix B8:DA:F7

Primary prefix
B8:DA:F7
Block
MA-L

Summary

// what this is
Advanced Photonics is registered to MAC prefix B8:DA:F7 in the IEEE OUI database. When a device's MAC address begins with B8:DA:F7, that block was registered by Advanced Photonics — the OUI identifies the maker of the network hardware, which is not always the brand on the device.
[ 01 ] — Context

About this vendor.

Updated  ·  Confidence: High  ·  3 sources  ·  How this page is checked

A MAC address beginning B8:DA:F7 matches an IEEE MA-L assignment registered to Advanced Photonics, Inc. This identifies the registry prefix only; it does not establish which device made the address, whether the company currently uses it, or whether the address is safe. No supplied source maps the prefix to a device category or product.

The company describes its business as developing, designing, manufacturing, and selling optical interconnection products. Its company page also documents products and activity involving optical transmission, isolators, and optical interconnection, including USB 3.x, HDMI 2.0, and 12G-SDI isolators exhibited in November 2025. These catalog details describe the company, not the use of this MAC prefix.

This is a 24-bit prefix, so a match tests the first three octets of a 48-bit MAC address. The remaining 24 bits allow 16,777,216 possible suffix values; that is an address-space count, not a count of devices or shipments. For B8, the Group and Local bits are both zero. They are fixed in this exact prefix; changing either bit produces a different prefix. RFC 7042 describes these bit meanings and MAC prefix structure.

Device category
Unknown; no source maps a device category to this exact prefix.
Registered organization
Advanced Photonics, Inc. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
Assigned prefix
B8:DA:F7 (/24), MA-L [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
Country
Japan [Confirmed] — https://www.advancedphotonics.co.jp/en/01.html
Industry
Semiconductors, optical communications, and optical interconnection [Confirmed] — https://www.advancedphotonics.co.jp/en/01.html
Notable products
Optical interconnection products; semiconductor-laser ultra-high-speed isolators; USB 3.x, HDMI 2.0, and 12G-SDI isolators [Confirmed] — https://www.advancedphotonics.co.jp/en/01.html
Device types mapped to this prefix
Unknown
Website
https://www.advancedphotonics.co.jp/en/01.html [Confirmed]
Company history
The company page states it was established on March 15, 2006 [Confirmed] — https://www.advancedphotonics.co.jp/en/01.html
Related organizations
Advantest Corporation; KT Group; Honda Tsushin Kogyo Co., Ltd. [Confirmed] — https://www.advancedphotonics.co.jp/en/01.html
Assignment dates
Assignment dates are unavailable in these IEEE CSV records. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
[ 02 ] — OUI prefixes

Assignments by IEEE.

1
// registered prefixes1
  1. B8:DA:F7MA-L
[ 03 ] — Related

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