Earda Technologies co Ltd — 25 prefixes (MA-L); Wi-Fi/BT module & IoT maker, OUI ≠ device brand

Earda Technologies co Ltd holds 25 MA-L blocks in the IEEE OUI registry, all registered to "Earda Technologies co Ltd" in Guangzhou, Guangdong, China. Twenty-four of the 25 carry the address Block A, Lianfeng Creative Park, #2 Jisheng Rd., Nansha District, Guangzhou (CN 511455); one block, 4C:0F:C7, lists an earlier address at 5/F, Block 2 East area, Haosheng Industrial Park, Guangzhou (CN 511400). No MA-M or MA-S assignments exist for this organization — its footprint is MA-L only. Earda (eardatek.com) is a live OEM/ODM vendor making wireless connectivity modules: Wi-Fi 4/5/6 modules, Wi-Fi+Bluetooth combo modules, Bluetooth Mesh modules, plus RF/digital-TV tuner modules and IoT smart-home devices such as smart switches, dimmers, and scene buttons. The company's site now also lists Wi-Fi 6E (MT7921K/RTL8852C-class) and Wi-Fi 7 (MT7927/RTL8892A-class) modules, an expansion of the catalog beyond what was on record at last check. These are embedded components shipped to third-party device makers, not end-user branded consumer products — the same "module, not device brand" pattern as AzureWave, Tuya, or Espressif: an Earda OUI in DHCP or switch tables signals an Earda-made module is present, not which brand's product it's inside. Earda's FCC grantee code is 2AMM6, and filings there span multiple distinct products (combo modules 8852BER3BB, 8822CSE3AA, EWN8822CSS3DA; BT Mesh/RF modules 825X1CA, 825X1HA, 825X1BA), confirming a multi-product manufacturer rather than a bare single-OUI registrant. Third-party B2B and company directories (Global Sources, Alibaba, D&B, Crunchbase, PatSnap) corroborate an operating company at this address. No CVEs, NVD entries, or CISA KEV listings were found under Earda's name as of July 2026 — an absence-of-evidence result, not a claim of no vulnerabilities; for OEM modules, security risk sits mainly with the integrating manufacturer's firmware and update practices in the final product.

IEEE assignment

25 prefixes → "Earda Technologies co Ltd", registered Guangzhou, Guangdong, China [Confirmed] — the IEEE MA-L registry (25 matching rows)

Registry / block size

MA-L (24-bit OUI) only; 25 blocks total, zero MA-M or MA-S assignments [Confirmed] — the IEEE MA-L registry, the IEEE MA-M registry, the IEEE MA-S registry (no matches in the latter two)

HQ / country

Block A, Lianfeng Creative Park, #2 Jisheng Rd., Nansha District, Guangzhou, Guangdong, CN 511455 (24 of 25 blocks); 4C:0F:C7 lists 5/F, Block 2 East area, Haosheng Industrial Park, Guangzhou, CN 511400 [Confirmed] — IEEE MA-L

Company status

active [Confirmed] — https://www.eardatek.com/ (live site), FCC grantee 2AMM6 has recent filings

Device types

Wi-Fi modules (Wi-Fi 4/5/6, plus newly observed Wi-Fi 6E/7), Wi-Fi+Bluetooth combo modules, Bluetooth Mesh modules, RF/digital-TV tuner modules, IoT smart-home devices (smart switches, dimmers, scene buttons) [Confirmed] — https://www.eardatek.com/module/wifimodule.html, fccid.io grantee 2AMM6

FCC grantee code

2AMM6, covering multiple distinct certified products (8852BER3BB, 8822CSE3AA, EWN8822CSS3DA, 825X1CA, 825X1HA, 825X1BA) [Confirmed] — https://fccid.io/2AMM6

Verified prefix sample (all MA-L)

A8:71:16, 6C:E8:C6, 48:5C:2C, F0:96:02, D4:9F:F9, B0:2E:BA, 4C:0F:C7 [Confirmed] — the IEEE MA-L registry

Company substance verdict

multi-OUI (25 blocks) + live product site + multiple FCC-certified filings + third-party directory presence (Global Sources, Alibaba, D&B, Crunchbase, PatSnap) — well above a bare single-OUI registration [Confirmed] — https://www.eardatek.com/, https://fccid.io/2AMM6, https://www.globalsources.com/earda-technologies/homepage_6008848642438.htm, https://www.dnb.com/business-directory/company-profiles.earda_technologies_co_ltd.c53dfbba4ed9a5d14548916becb167d9.html

Registration date

Unknown / not applicable — IEEE's the IEEE MA-L registry publishes only Registry, Assignment, Organization Name, Organization Address columns; no date field exists, and none is attributed to IEEE here [Confirmed] — the IEEE MA-L registry

Founded

~1998–1999 (vendor self-description; independent directory sources vary between 1998 and 1999, one aggregator lists Dec 2007) — treated as unresolved, not corroborated to a single year [Likely] — https://www.eardatek.com/

Security context

no CVEs, NVD entries, or CISA KEV listings found for Earda or its named modules as of July 2026; sourced absence, not proof of no vulnerabilities [Confirmed] — https://nvd.nist.gov/vuln, https://www.cve.org/

IANA reference

blank — no IANA Reference data applies to OUI/MA-L registry entries [Confirmed] — the IEEE MA-L registry

Special note

Module-level signal — an Earda OUI identifies an Earda-made Wi-Fi/BT module or IoT device regardless of host brand (same pattern as AzureWave/Tuya/Espressif) [Confirmed]

Related vendors

none held in common ownership; same module-not-brand pattern as AzureWave, Tuya, Espressif [Confirmed]