Ningbo Freewings Technologies Co.,Ltd — 2 prefixes (MA-L)

A MAC address starting with A4:77:58 or A0:E9:DB belongs to Ningbo Freewings Technologies Co.,Ltd, a Zhejiang, China-based manufacturer of Bluetooth/Wi-Fi wireless-audio hardware, most concretely documented in consumer soundbar products confirmed through FCC equipment-authorization filings.

The IEEE registry carries two separate MA-L assignments for this company: A4:77:58 to "Ningbo Freewings Technologies Co.,Ltd" at a Wenshui Road address, and A0:E9:DB to "Ningbo FreeWings Technologies Co.,Ltd" (slightly different capitalization) at a XueShi Road address. Both sit in Yinzhou District, Ningbo, Zhejiang.

Independent corroboration beyond the bare registry rows comes from an FCC grantee code, 2AR7X, with seven device filings from 2019 through 2022, all soundbars — 2.0-channel, 2.1-channel, and 5.1-channel models, some paired with a wireless subwoofer. A related entity name, "Ningbo Freewings Communication Technologies Co., Ltd.," holds the trademark "COOLWAVEZ" (serial 86311401), and the company's own site describes broader Bluetooth/Wi-Fi/low-power-NFC wireless modules built with chipset partners including Qualcomm and Nordic — though that site's content could only be relayed via search-snippet synopsis, since a direct fetch failed on an expired TLS certificate.

No CVE, malware, or botnet association for this vendor's products turned up in an August 2026 search.

Device class

consumer wireless-audio hardware — soundbars (2.0/2.1-channel, and 5.1-channel with wireless subwoofer)

Company

Ningbo Freewings Technologies Co.,Ltd, also filed/traded as Ningbo FreeWings Technologies Co.,Ltd and Ningbo Freewings Communication Technologies Co., Ltd.

OUI assignments

A4:77:58 and A0:E9:DB (both MA-L)

Also seen on

FCC-filed soundbar models under grantee code 2AR7X, 2019–2022 (fccid.io/2AR7X)

IEEE assignment

A4:77:58 → Ningbo Freewings Technologies Co.,Ltd, No.502 Wenshui Road, Shounan Street, Yinzhou District, Ningbo, Zhejiang, CN 315192 [Confirmed] — the IEEE MA-L registry A47758

IEEE assignment

A0:E9:DB → Ningbo FreeWings Technologies Co.,Ltd, Room 1107-1108, No 298 XueShi Road, Yinzhou District, Ningbo, Zhejiang, CN 315000 [Confirmed] — the IEEE MA-L registry A0E9DB

Registry / block size

MA-L (24-bit OUI) for both assignments [Confirmed] — the IEEE MA-L registry A47758, A0E9DB

HQ / country

Yinzhou District, Ningbo, Zhejiang, China (two registry addresses, both within Ningbo) [Confirmed] — the IEEE MA-L registry A47758, A0E9DB

Company status

active, evidenced by FCC device filings through 2022 and active trademark records [Likely] — https://fccid.io/2AR7X, https://trademarks.justia.com/owners/ningbo-freewings-communication-technologies-co-ltd-2872734/

Device types

consumer wireless-audio soundbars (2.0/2.1-channel, 5.1-channel with wireless subwoofer) [Confirmed] — https://fccid.io/2AR7X

Notable products

seven FCC-filed soundbar models under grantee code 2AR7X, 2019–2022 (e.g. "30in 2.0-channel soundbar", 36-inch 2.1/5.1 models, "20in 2.0 soundbar") [Confirmed] — https://fccid.io/2AR7X

Trademark

"COOLWAVEZ" (serial 86311401), registrant Ningbo Freewings Communication Technologies Co., Ltd. [Confirmed] — https://trademark.trademarkia.com/coolwavez-86311401.html

Registration date

Unknown — IEEE's public OUI data publishes no assignment/registration date for either prefix [Unknown] — the IEEE MA-L registry A47758, A0E9DB

Vendor site content

not independently verified — freewings.com returned an expired-TLS-certificate error on direct fetch; the broader Bluetooth/Wi-Fi/NFC product-line description is relayed only via search-snippet synopsis [Likely] — http://www.freewings.com/index.php?s=%2FIndex%2Findex.html&lang=en-us

Security association

no CVE, malware, or botnet reporting naming this vendor or its products found as of an August 2026 search [Likely]

Analyst note

two separate MA-L OUI assignments plus independent FCC equipment filings and trademark records point to a real, identifiable soundbar manufacturer rather than a bare single-OUI shell registration; treat the vendor's own site description as unverified pending a successful direct read.