Murata Manufacturing Co., Ltd. — 77 prefixes (MA-L + MA-S)

Murata Manufacturing is a large Japanese electronic-components maker, and its MAC prefixes show up on home networks far more often than most people expect — not on Murata-branded gear, but inside other companies' products. Murata supplies embedded Wi-Fi/Bluetooth radio modules that OEMs design into smartphones, smart-home appliances, routers, medical monitors, and IoT edge devices, and those modules ship with MAC addresses programmed from Murata's own IEEE blocks. That is why a network scanner can label a Samsung phone, a Trane thermostat, or a smart TV as "Murata Manufacturing": the radio chip, not the end product, carries the Murata OUI. The footprint is 77 registered prefixes — 75 MA-L (24-bit OUI) blocks plus 2 MA-S (36-bit) blocks — registered to "Murata Manufacturing Co., Ltd." at the company's Nagaokakyo (Kyoto) registry address, with additional Shiga and Yokohama addresses on some entries. Seeing Murata on a scan is almost always benign; it indicates an embedded radio from a well-known component supplier rather than a rogue device. Two data-quality traps matter here: "MURATA MACHINERY, LTD." (OUI 005081) is a different legal entity and is excluded, and one legacy block (006057) carries a placeholder "12345" postal code. Note also that IEEE publishes no OUI registration dates — any "date registered" on third-party lookup tools is a database artifact, not an IEEE fact.

IEEE assignment

77 prefixes → Murata Manufacturing Co., Ltd. (75 MA-L + 2 MA-S), registered Nagaokakyo-shi, Kyoto, JP [Confirmed] — IEEE MA-L / MA-S (regauth.standards.ieee.org)

Registry / block sizes

MA-L (24-bit OUI, 75 blocks) and MA-S (36-bit, 2 blocks); no MA-M blocks [Confirmed] — IEEE registry classes. NOTE: IEEE's public OUI data publishes NO assignment/registration date (the IEEE MA-L registry columns are only Registry, Assignment, Organization Name, Organization Address); any "date registered" on third-party tools (maclookup, netify, macverify) is a database artifact, not an IEEE fact.

HQ / country

1-10-1, Higashikotari, Nagaokakyo-shi, Kyoto, JP 617-8555 (registry + corporate HQ); JP [Confirmed] — IEEE MA-L, corporate.murata.com/company

Secondary registry addresses

2288, Oaza-Ohshinohara, Yasu-cho, Yasu-gun, Shiga, JP 520-2393; 4-3-8 Minatomirai, Nishi-ku, Yokohama, Kanagawa, JP 220-0012 (MA-S entries) [Confirmed] — IEEE registry

Company status

active; founded October 1944 (Akira Murata), incorporated as Murata Manufacturing Co., Ltd. December 1950 [Confirmed] — en.wikipedia.org/wiki/Murata_Manufacturing

Company profile

major Japanese electronic-components manufacturer — ceramic passives (notably MLCCs), SAW/crystal filters, inductors, sensors, RF/communications modules; revenue ~¥1.74T (FY2025), ~72,572 employees, 84 subsidiaries

[Confirmed] — corporate.murata.com/company, en.wikipedia.org/wiki/Murata_Manufacturing

Device types

Murata OUIs appear on embedded wireless modules integrated by OEMs — smartphones (Samsung, Apple, Xiaomi, Vivo, Oppo, Huawei), smart-home appliances (thermostats, smart TVs), routers/Wi-Fi dongles, medical monitors, industrial automation, V2X/connected vehicles, IoT edge devices

[Confirmed] — murata.com/en-us/products/connectivitymodule, routerctrl.com, robotpoweredhome.com

Radio technologies

Wi-Fi 802.11 b/g/n/ac/ax, Bluetooth/BLE, LPWA (LTE Cat-M1/NB-IoT), UWB, 5G mmWave, proprietary FHSS, Edge AI modules [Confirmed] — corporate.murata.com/en-us/technology

MAC assignment model

Murata pre-programs MACs into module OTP memory from its own OUI blocks; OEMs may optionally override via NVRAM — so a scanner identifies the device by Murata's OUI even when the end product is a Samsung phone or a Trane thermostat [Confirmed] — community.murata.com (Type 1DX MAC question)

Verified sample prefixes (MA-L)

34:90:EA, 00:0E:6D, 00:13:E0, 10:32:2C, A0:C9:A0, D0:0B:27, FC:DB:B3, FC:84:A7, 50:26:EF, 7C:B8:DA [Confirmed] — IEEE MA-L, netify.ai/resources/macs/brands/murata, maclookup.app

Verified MA-S prefixes (36-bit)

8C:1F:64:B14, 8C:1F:64:79D [Confirmed] — IEEE MA-S (oui36)

Allocated date

Unknown — IEEE publishes no registration dates for OUI/MA-L/MA-S assignments; third-party "date registered" values are database artifacts [Confirmed that no IEEE date exists] — IEEE registry

Data traps

"MURATA MACHINERY, LTD." (OUI 005081, MA-L) is a separate legal entity, excluded from this vendor; legacy block 006057 carries a placeholder "12345" postal code; the MA-S org-name variant "Murata Manufacturing CO., Ltd." (all-caps CO) is the same legal entity [Confirmed] — IEEE registry inspection

Security context

a Murata OUI on a scan is almost always benign — an embedded radio from a well-known OEM supplier; no product/module CVEs found this pass. A May 2026 corporate-IT breach (unauthorized access to internal systems) was disclosed, but that is a corporate-IT event, not a device/firmware vulnerability

[Confirmed; separate scope] — upguard.com/news/murata-data-breach-2026-05-04, article.murata.com

Analyst note

absence of a Murata OUI does not mean "not a Murata module" (OEMs can override the MAC), and presence indicates the radio supplier, not the end-product brand — don't infer the device manufacturer from the Murata OUI alone.