MAC address vendor

Shanghai MXCHIP Information Technology Co., Ltd. — 7 prefixes (MA-L)

Primary prefix
04:78:63
Block
MA-L
Status
Active

Summary

// what this is
Shanghai MXCHIP Information Technology is registered to MAC prefix 04:78:63 and 6 more in the IEEE OUI database. When a device's MAC address begins with 04:78:63, that block was registered by Shanghai MXCHIP Information Technology — the OUI identifies the maker of the network hardware, which is not always the brand on the device.
// analyst note
MXCHIP sells Wi-Fi/BLE modules to OEM brand customers rather than end-user devices under its own name, so a MAC hit on one of these prefixes most often indicates an embedded radio inside some other brand's IoT product, not an MXCHIP-branded device. No dedicated CVE/security-advisory search was run for this entry; treat security posture as Unknown rather than clean.
[ 01 ] — Context

About this vendor.

Updated  ·  Confidence: Medium

Shanghai MXCHIP Information Technology Co., Ltd. is a Chinese IoT hardware vendor holding seven distinct MA-L (24-bit OUI) blocks in the IEEE registry, all registered under the identical organization name: 04:78:63, 68:79:C4, 80:A0:36, 84:9D:C2, 88:A6:8D, B0:F8:93, and D0:BA:E4. Six of the seven share a registered address on Jinshajiang Rd. in Putuo District, Shanghai; the seventh, D0:BA:E4, is registered to a Tongpu Building address elsewhere in Shanghai. A closely related but legally distinct registrant name, MXCHIP Company Limited, holds an eighth MA-L block (C8:93:46) at that same Tongpu Building address, suggesting a corporate-affiliate relationship rather than a naming variant of the same entity. Beyond the multi-prefix registry footprint, independent third-party coverage corroborates a real shipping product line: CNX Software's 2015 writeup of the MXCHIP EMW3162 describes a roughly $10, low-power Wi-Fi module built on an STM32F2 Cortex-M3 MCU, programmable via Broadcom WICED or MXCHIP's own MiCO RTOS, and pitched as a lower-power alternative to the ESP8266 for battery-powered IoT applications. STMicroelectronics' official partner-program page also lists MXCHIP, consistent with a module vendor building on ST silicon. These modules are typically embedded by OEM brands into smart-home, smart-lighting, and smart-appliance products rather than sold as MXCHIP-branded end devices, so a MAC hit on one of these prefixes usually signals a third-party gadget with an MXCHIP radio inside, not an MXCHIP-labeled device on the network.

IEEE assignment
7 MA-L prefixes registered to "Shanghai MXCHIP Information Technology Co., Ltd." — 04:78:63, 68:79:C4, 80:A0:36, 84:9D:C2, 88:A6:8D, B0:F8:93, D0:BA:E4 [Confirmed] — the IEEE MA-L registry
Registry / block size
MA-L (24-bit OUI); no MA-M/MA-S entries found for this registrant name [Confirmed] — the IEEE MA-L registry, the IEEE MA-M registry, the IEEE MA-S registry
Registered address
9th Floor, No. 5 Building, 2145 Jinshajiang Rd., Putuo District, Shanghai, CN 200333 (6 of 7 prefixes); D0:BA:E4 is registered separately to Room 811, Tongpu Building, Shanghai, Shanghai, CN 200333 [Confirmed] — the IEEE MA-L registry
Registration date
Unknown — IEEE's public the IEEE MA-L registry publishes no date field (only Registry, Assignment, Organization Name, Organization Address); third-party aggregator "date registered" values (e.g. maclookup.app showing 2015-11-17 through 2025-09-25 across these prefixes) are database/crawl artifacts, not IEEE facts, and are not recorded as registration dates here
[Confirmed — non-attribution] — the IEEE MA-L registry, https://maclookup.app/vendors/shanghai-mxchip-information-technology-co-ltd
Related entity
MXCHIP Company Limited holds an 8th MA-L block, C8:93:46, at the same Tongpu Building address as D0:BA:E4, but under a distinct IEEE organization name — treated as a related vendor, not folded into this entry [Confirmed] — the IEEE MA-L registry
Company substance / product line
EMW3162, a ~$10 low-power Wi-Fi module (STM32F2 Cortex-M3 MCU, programmable via Broadcom WICED or MXCHIP's MiCO RTOS), covered independently by CNX Software in 2015 as a lower-power ESP8266 alternative for battery-powered IoT [Likely — third-party press, not a source I control] — https://www.cnx-software.com/2015/03/26/mxchip-emw3162-is-a-10-low-power-wi-fi-module-for-iot-applications/
Partner ecosystem
listed on STMicroelectronics' official partner-program page, consistent with a Wi-Fi/BLE module vendor building on ST silicon [Likely] — https://www.st.com/content/st_com/en/partner/partner-program/partnerpage/MXCHIP.html
Company website
mxchip.com lists Wi-Fi/BLE modules and smart-home/gateway hardware, but a direct fetch returned empty/JS-rendered content, so first-party site claims are unconfirmed by direct read [Likely] — https://www.mxchip.com/en/products/module
Device / usage context
prefixes turn up on Wi-Fi/BLE radios embedded by OEM brands inside smart-home, smart-lighting, smart-appliance, and smart-security products, rather than on MXCHIP-branded end devices
[Likely] — https://www.cnx-software.com/2015/03/26/mxchip-emw3162-is-a-10-low-power-wi-fi-module-for-iot-applications/
Security advisory check
no dedicated CVE/NVD/advisory-database search was performed for MXCHIP hardware in this pass; status is Unknown, not a clean record [Unknown] — not searched
Master entry status
no masters/oui-master row or prior .CHECK/.md exists yet for this slug; it was only queued in NEXT-BATCH-oui.md, so this file is the first-cycle candidate [Confirmed] — this site's own enrichment records
[ 02 ] — OUI prefixes

Assignments by IEEE.

7
// registered prefixes7
  1. 04:78:63MA-L
  2. 68:79:C4MA-L
  3. 80:A0:36MA-L
  4. 84:9D:C2MA-L
  5. 88:A6:8DMA-L
  6. B0:F8:93MA-L
  7. D0:BA:E4MA-L
[ 03 ] — Related

Keep digging.