Lenovo (Beijing) Co., Ltd. — 3 prefixes (MA-L)

A MAC address beginning with 48:C3:5A, A0:32:99, or 20:76:93 identifies hardware registered to Lenovo (Beijing) Co., Ltd., the Beijing-based operating entity of Lenovo Group Limited — not a shared IEEE base, but three separate direct MA-L allocations to closely-named Lenovo Beijing legal entities.

The three prefixes carry slightly different registrant strings — "LENOVO(BEIJING)CO., LTD.", "Lenovo (Beijing) Co., Ltd.", and "Lenovo (Beijing) Limited." — a common pattern where one corporate group re-registers under near-identical legal-entity spellings over time. Two of the three (A0:32:99, 20:76:93) share the same Shangdi-area, Haidian District address; the third (48:C3:5A) cites "Lenovo HQ East" in the same district.

A separately-registered ASN, AS63548, carries the name "LENOVO (BEIJING) Co.ltd" — an independent registry footprint (RIR, not IEEE) that corroborates a real operating entity behind these OUIs rather than a bare shell registration.

IEEE's public OUI data does not publish assignment or registration dates. One third-party lookup site shows "17 November 2015" for A0:32:99; that is the site's own database record, not an IEEE fact, and must not be read as an IEEE registration date.

No independent device teardown or product-line source ties any of these three prefixes to a specific Lenovo hardware model, so device class is Unknown rather than assumed. A nearby MA-M registration, 50:A4:D0, belongs to Beijing ANTVR Technology Co., LTD — a co-located tenant inside Lenovo's Beijing Innovation Center building, not a Lenovo entity or a Lenovo-owned block.

IEEE assignment

48:C3:5A → "LENOVO(BEIJING)CO., LTD.", A0:32:99 → "Lenovo (Beijing) Co., Ltd.", 20:76:93 → "Lenovo (Beijing) Limited." — all registered Beijing, CN [Confirmed] — the IEEE MA-L registry (keys 48C35A, A03299, 207693)

Registry / block size

MA-L (24-bit OUI) for all three; no the IEEE MA-S registry entries found for Lenovo Beijing as of an August 2026 search [Confirmed] — the IEEE MA-L registry, the IEEE MA-S registry

HQ / registered addresses

"Lenovo HQ East, Building 1, No.10 Courtyard Xibeiwang East Road, Haidian District, Beijing 100176" (48:C3:5A); "No.6, ChuangYe Road, Haidian District, Beijing 100085" (A0:32:99, 20:76:93 cite the same Shangdi Information Industry Base) [Confirmed] — the IEEE MA-L registry

Company status

active; corroborated as a substantive operating entity (not a shell) by a separately-registered ASN, AS63548 "LENOVO (BEIJING) Co.ltd", under the same legal-entity name [Likely] — https://ipinfo.io/AS63548

Device types

Unknown — no independent device teardown or product-line source ties these prefixes to a specific Lenovo hardware line as of an August 2026 search [Unknown] — https://www.netify.ai/resources/macs/brands/lenovo

Notable products

Unknown (see device types) [Unknown]

Verified sample prefixes (all MA-L)

48:C3:5A, A0:32:99, 20:76:93 [Confirmed] — the IEEE MA-L registry; cross-checked for A0:32:99 against https://hwaddress.com/company/lenovo-beijing-co-ltd/ and https://uic.io/en/mac/vendor/lenovo_beijing_co_ltd/

Third-party date artifact

maclookup.app shows "17 November 2015" for A0:32:99; this is that site's own database record, not an IEEE-published fact — IEEE publishes no MAC/OUI assignment dates [Confirmed] — https://maclookup.app/macaddress/A03299

Co-located, unrelated entity

50:A4:D0 (MA-M) → Beijing ANTVR Technology Co., LTD, address "4th floor of Building C, Lenovo Beijing Innovation Center, No. 6 Shangdi West Rd., Haidian Distr., Beijing 100085" — a building tenant, not a Lenovo subsidiary or Lenovo-registered block [Confirmed] — the IEEE MA-M registry (key 50A4D01)

Security context

no CVE or malware association is recorded against these three OUIs or against "Lenovo (Beijing) Co., Ltd." specifically as of an August 2026 search; brand-wide Lenovo security history (e.g. the 2015 Superfish disclosure, 2021-2022 Secure Boot/UEFI CVEs) exists but is not tied to this entity or these prefixes

[Likely] — https://legioncyber.com/lenovos-security-failures-and-hidden-risks/

Related vendors

Lenovo Group Limited (parent, Beijing-headquartered); distinct from Beijing ANTVR Technology Co., LTD (unrelated co-located tenant) [Confirmed] — the IEEE MA-M registry

Analyst note

three prefixes trace to Lenovo Beijing legal-entity variants with a corroborating independent ASN registration, so treat as a genuine multi-block operating-subsidiary footprint rather than a single-OUI shell; device class for these specific prefixes is unverified, so avoid asserting a product line, and do not conflate the co-located ANTVR (MA-M) registration with Lenovo itself

[Likely] — https://ipinfo.io/AS63548, the IEEE MA-M registry