Lierda Science & Technology Group Co., Ltd — 3 confirmed prefixes (MA-L)

A MAC address beginning with EC:30:8E, A0:C6:A5, or 30:1B:97 belongs to Lierda Science & Technology Group Co., Ltd, a Hangzhou, China-based IoT and wireless module manufacturer. These prefixes are typically seen on Wi-Fi, Bluetooth Low Energy, LoRa, NB-IoT, Cat.1, 5G, Wi-SUN, and Zigbee communication modules embedded in third-party IoT devices rather than on end-user consumer products bearing the Lierda name directly.

Lierda is a substantive, identifiable company: 20+ years in operation, publicly listed on the Beijing Stock Exchange (ticker 832149), and a member of the Connectivity Standards Alliance with partner relationships to chipmakers including STMicroelectronics and Qorvo. All three confirmed prefixes register to the identical company name and Hangzhou address in the repo's own IEEE-sourced OUI master, which independently corroborates a single, real corporate entity rather than a shell registration.

Two adjacent entries share the same building complex but cannot be fully corroborated as the same legal entity: 00:95:69 registers to "LSD Science and Technology Co.,Ltd." at a nearby Lierda-named building, and C0:D3:91:2 (an MA-M block) registers to "Hofon Automation Co.,Ltd," described in its own filing as based at the Lierda complex. Both look related but their exact corporate relationship to Lierda Science & Technology Group is unconfirmed.

A CVE (2019-15304, hardcoded default admin credentials) exists for a "Lierda" grill temperature monitor, but the advisory does not confirm whether that device maker is this same diversified module manufacturer or an unrelated same-named OEM, so it should not be treated as an established vendor-security fact for this OUI.

IEEE assignment

3 prefixes → Lierda Science & Technology Group Co., Ltd, registered Hangzhou, Zhejiang, CN [Confirmed] — IEEE MA-L

Registry / block size

MA-L (24-bit OUI) x3; one related MA-M (28-bit) block held by a subsidiary-style entity [Confirmed] — the IEEE MA-L registry, the IEEE MA-M registry

HQ / country

Lierda Science Park, No.1326 Wenyi West Road, Hangzhou, Zhejiang, CN 311121 [Confirmed] — IEEE MA-L

Company status

active; publicly listed, Beijing Stock Exchange ticker 832149 [Likely] — https://en.lierda.com/

Device types

Wi-Fi, BLE, LoRa, NB-IoT, Cat.1, 5G, Wi-SUN, Zigbee modules [Confirmed] — https://en.lierda.com/, https://csa-iot.org/member/lierda-science-technology-group-co-ltd/

Notable products

IoT wireless communication modules (module-level, embedded in third-party devices) [Confirmed] — https://www.st.com/content/st_com/en/partner/partner-program/partnerpage/Lierda.html, https://www.qorvo.com/innovation/ultra-wideband/partners/lierda

Verified sample prefixes (all MA-L, Lierda Science & Technology Group Co., Ltd)

EC:30:8E, A0:C6:A5, 30:1B:97 [Confirmed] — the IEEE MA-L registry

Related registration (unconfirmed relationship)

00:95:69 → "LSD Science and Technology Co.,Ltd.", Lierda Building, No.425 Dengyun Rd, Hangzhou [Unknown — same building complex, corporate link not verified] — the IEEE MA-L registry

Related registration (subsidiary-style)

C0:D3:91:2 (MA-M) → Hofon Automation Co.,Ltd, 8th floor, 3rd building of Lierda, No.1328 Wenyi Road, Hangzhou [Likely] — the IEEE MA-M registry

IEEE registration dates

not published by IEEE for any of these prefixes; maclookup.app "registered/updated" timestamps (e.g. 2019-07-12, 2024-06-07, 2026-04-20) are third-party crawl artifacts, not IEEE facts, and must not be presented as registration dates

[Confirmed] — https://maclookup.app/vendors/lierda-science-technology-group-co-ltd

Security note

CVE-2019-15304 (hardcoded default admin credentials) is attributed in the advisory to a "Lierda"-branded grill temperature monitor; the advisory does not establish whether the device maker is this OUI vendor or a same-named unrelated OEM [Unknown] — https://seclists.org/fulldisclosure/2019/Aug/24

Analyst note

Treat the two adjacent entities (00:95:69, C0:D3:91:2) as related-but-unverified rather than confirmed parts of Lierda Science & Technology Group; do not merge their identities into this vendor's confirmed prefix set.