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

Earda Technologies co Ltd holds 25 MA-L blocks registered in the IEEE OUI registry, all 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). Earda (eardatek.com) is an OEM/ODM that makes 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. As with AzureWave, Tuya, or Espressif, this makes an Earda OUI a module-level fingerprint: seeing it in DHCP or switch tables means "an Earda Wi-Fi/BT module is present," and the host device can be any brand that integrated the module. 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) plus finished smart-home devices, 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 or its named modules as of July 2026 — an absence-of-evidence result, not a claim of no vulnerabilities; for OEM modules the practical risk sits downstream, with how the integrating manufacturer implements firmware and update security in the final product.

IEEE assignment

25 prefixes → "Earda Technologies co Ltd", registered Guangzhou, Guangdong, China [Confirmed] — IEEE MA-L (25 matching rows; mirrored at maclookup.app)

Registry / block size

MA-L (24-bit OUI); 25 blocks, all MA-L (no MA-M or MA-S assignments found) [Confirmed] — the IEEE MA-L registry (no matches in the IEEE MA-M registry / the IEEE MA-S registry)

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] — eardatek.com (live), fccid.io grantee 2AMM6

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] — eardatek.com

Device types

Wi-Fi modules (Wi-Fi 4/5/6, plus newly observed Wi-Fi 6E/7), Wi-Fi+Bluetooth combo modules (dual-band 2.4/5 GHz, 802.11ax/ac/n, BT 4.2+), Bluetooth Mesh modules, RF/digital-TV tuner modules (DVB-S/S2/T/T2/C, ISDB-T, DTMB, ATSC), IoT smart-home devices (smart switches, dimmers, scene buttons)

[Confirmed] — eardatek.com, https://www.eardatek.com/module/wifimodule.html, fccid.io (grantee 2AMM6)

Notable products

Wi-Fi/BT combo modules 8852BER3BB, 8822CSE3AA and EWN8822CSS3DA; BT Mesh/RF modules 825X1CA, 825X1HA, 825X1BA; smart switches/dimmers (ESW00A, 12TBNVT-US); mobile digital-TV receiver EMA-3000A [Confirmed] — fccid.io (grantee 2AMM6)

FCC grantee code

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

Verified prefix sample

A8:71:16, 6C:E8:C6, 4C:0F:C7, 2C:73:60, B4:47:F5, B8:C6:AA, 88:42:D0, D4:9F:F9, 48:5C:2C, F0:96:02, B0:2E:BA (11 of the 25; all MA-L) [Confirmed] — IEEE MA-L / maclookup.app

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 — IEEE publishes no assignment/registration dates in the OUI registry (the IEEE MA-L registry columns are only Registry, Assignment, Organization Name, Organization Address); third-party "date registered" values (e.g. maclookup.app, range ~2012–2026) are database artifacts, not IEEE facts

[Confirmed] — IEEE MA-L registry, maclookup.app

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; risk profile is typical for OEM IoT/Wi-Fi module suppliers and depends on how the integrating manufacturer secures the final product (FCC Single Modular Approval / KDB 996369 puts compliance on the host maker)

[Confirmed] — https://nvd.nist.gov/vuln (no hits), https://www.cve.org/, fccid.io

Special note

Module-level signal — an Earda OUI identifies an Earda Wi-Fi/BT module or IoT device REGARDLESS of host brand (same pattern as AzureWave/Tuya/Espressif). IEEE publishes no assignment dates, so none is stated here. [Confirmed]

Related vendors

none significant (module/device supplier to many brands); same module-not-brand pattern as AzureWave, Tuya, Espressif

Analyst note

Seeing Earda in DHCP/switch tables means "an Earda Wi-Fi/BT module or IoT device" — the host could be any brand that integrated it. Use for module-level fingerprinting, not brand attribution; not inherently rogue.