MAC address vendor

FCNT LLC — 3 prefixes (MA-L)

Primary prefix
18:18:8B
Block
MA-L
Status
Active

Summary

// what this is
FCNT is registered to MAC prefix 18:18:8B and 2 more in the IEEE OUI database. When a device's MAC address begins with 18:18:8B, that block was registered by FCNT — the OUI identifies the maker of the network hardware, which is not always the brand on the device.
// analyst note
Multiple OUI blocks at one address plus a well-documented corporate history are sufficient substance to finalize this vendor rather than abstain as a single-OUI shell.
[ 01 ] — Context

About this vendor.

Updated  ·  Confidence: High

A MAC address beginning 18:18:8B, E4:D3:AA, or B8:D0:F0 belongs to FCNT LLC, a Japanese mobile-device maker, and is typically found on the Wi-Fi and Bluetooth radios of Fujitsu-branded Arrows and Raku Raku smartphones and feature phones sold in Japan.

FCNT LLC is the successor to Fujitsu Connected Technologies, the division that built Fujitsu's mobile-phone business. FCNT filed for bankruptcy protection in Japan in May 2023; later that year Lenovo acquired its mobile R&D, sales, and maintenance operations and funded a successor entity that kept shipping Arrows-branded phones, such as the Arrows Alpha F-51F, into 2024 and 2025.

All three IEEE MA-L assignments register to FCNT LLC at the same address — the Sanki Yamato Building in Yamato, Kanagawa, Japan — confirmed in the local IEEE registry snapshot and live-verified individually against macvendors.com on 2026-07-31. Holding multiple OUI blocks at one address is itself a substance signal distinguishing FCNT from a bare single-block shell registrant.

No source was found tying any of the three specific hex prefixes to a named device model in the field, so the device-class attribution rests on the registrant's identity rather than an observed sighting. Any "registration date" shown by third-party lookup tools like maclookup.app is a database artifact, not an IEEE-published fact, and is not carried into this entry.

IEEE assignment
3 prefixes → FCNT LLC, registered Yamato, Kanagawa, JP [Confirmed] — the IEEE MA-L registry (rows 6684, 22589, 38450)
Registry / block size
MA-L (48-bit OUI); holds 3 IEEE prefixes [Confirmed] — the IEEE MA-L registry; live-verified via macvendors.com API
HQ / country
Sanki Yamato Building, 7-10-1 Chuorinkan, Yamato, Kanagawa 242-8588, Japan [Confirmed] — the IEEE MA-L registry
Company status
active (Lenovo-affiliated successor entity, continuing Arrows-branded phone releases) [Confirmed] — wraltechwire.com (2023-10-02), notebookcheck.net
Device types
smartphones and feature phones (Arrows, Raku Raku lines) [Likely] — inferred from company identity; no source ties a specific prefix to a named device
Notable products
Arrows Alpha F-51F and other Arrows-branded smartphones [Confirmed] — notebookcheck.net
Verified sample prefixes (all MA-L, FCNT LLC)
18:18:8B, E4:D3:AA, B8:D0:F0 [Confirmed] — the IEEE MA-L registry; macvendors.com API (live-verified 2026-07-31)
Special note
A "registration date" shown by third-party tools (e.g. maclookup.app: "Initial registration 03 November 2020" for 18:18:8B) is a database artifact of that tool, not an IEEE-published fact — IEEE's the IEEE MA-L registry carries no date column. Do not display it as an IEEE registration date.
[Confirmed] — maclookup.app; IEEE the IEEE MA-L registry schema
Related vendors
Fujitsu (former parent; Fujitsu Connected Technologies predecessor), Lenovo (acquired FCNT's mobile business in 2023) [Confirmed] — wraltechwire.com
Analyst note
Company substance beyond a bare shell registration — three OUI blocks at one address plus a well-documented corporate history (Fujitsu mobile spinoff, 2023 bankruptcy, Lenovo-funded successor) support treating this as a genuine multi-prefix vendor entry rather than a single-OUI shell.
[ 02 ] — OUI prefixes

Assignments by IEEE.

3
// registered prefixes3
  1. 18:18:8BMA-L
  2. E4:D3:AAMA-L
  3. B8:D0:F0MA-L
[ 03 ] — Related

Keep digging.