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. 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, under which filings cover combo modules (e.g. 8852BER3BB, EWN8822CSS3DA), Bluetooth Mesh modules, and finished smart-home devices. No CVEs or public security incidents specific to Earda were found as of June 2026; 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 (enrichment/registries/oui.csv, 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] — enrichment/registries/oui.csv (no matches in mam.csv / oui36.csv)
- 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 (vendor self-description; not independently corroborated by a third-party source) [Likely] — eardatek.com
- Device types
- Wi-Fi modules (Wi-Fi 4/5/6), 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, fccid.io (grantee 2AMM6)
- Notable products
- Wi-Fi/BT combo modules 8852BER3BB and EWN8822CSS3DA; BT Mesh module 825X1CA; smart switches/dimmers (ESW00A, 12TBNVT-US); mobile digital-TV receiver EMA-3000A [Confirmed] — fccid.io (grantee 2AMM6)
- FCC grantee code
- 2AMM6 [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 (all MA-L) [Confirmed] — IEEE MA-L / maclookup.app
- Registration date
- Unknown — IEEE publishes no assignment/registration dates in the OUI registry (oui.csv 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 oui.csv, maclookup.app
- Security context
- no CVEs or public vulnerability disclosures specific to Earda found as of June 2026; 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] — NVD search (no hits), 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.