Hangzhou H3C Technologies Co., Limited — 27+ prefixes (MA-L)

H3C is one of China's largest enterprise-networking vendors, and the IEEE registry carries a substantial MA-L footprint under "Hangzhou H3C Technologies Co., Limited" — at least 27 verified MA-L blocks in the sampled registry, with the company's later trading name "New H3C Technologies Co., Ltd" holding a separate, larger set of MA-L assignments at the same 466 Changhe Road address. The corporate history is unusually tangled for OUI purposes: the company began in 2003 as the Huawei-3Com joint venture "Huawei 3Com Technologies," became H3C when 3Com bought out Huawei's stake in 2007, passed to HP when HP acquired 3Com in 2010, and then to Tsinghua Unigroup, which took 51% in 2015 and full ownership by 2023 — ending a two-decade US–China equipment partnership. The hardware behind these blocks spans the full enterprise stack: campus and data-center LAN switches, IP routers, WLAN access points and controllers, firewalls and security appliances, UniServer servers, storage and HCI systems, plus a consumer/SMB "Magic" router line. For asset-classification work the practical caveat is the security profile of that Magic line: multiple critical, unpatched remote-command-injection CVEs were disclosed across the NX15, NX30 Pro, NX400, R3010, and BE18000 models in early-to-mid 2025, so an H3C OUI on an SMB router warrants firmware verification against the vendor's PSIRT advisories. As with all OUI entries, the IEEE publishes no registration dates — any per-prefix "date registered" on third-party lookup tools is a database artifact, not an IEEE fact.

IEEE assignment

≥27 verified MA-L prefixes → Hangzhou H3C Technologies Co., Limited [Confirmed] — IEEE MA-L

Registry / block size

MA-L (24-bit OUI); ≥27 verified IEEE prefixes; no MA-M (the IEEE MA-M registry) or MA-S (the IEEE MA-S registry) entries found for this org name [Confirmed] — IEEE MA-L. NOTE: IEEE's public OUI data publishes NO assignment/registration date; any "date registered" on third-party tools (maclookup.app etc.) is a database artifact, not an IEEE fact.

HQ / country

466 Changhe Road, Binjiang District, Hangzhou, Zhejiang, CN 310052 (primary registry address) [Confirmed] — IEEE MA-L

Address (alternate)

310 Liuhe Road, Zhijiang Science Park, Hangzhou, Zhejiang, CN 310053 [Confirmed] — IEEE MA-L

Address (legacy)

Oriental Electronic Bldg., No. 2 Chuangye Road, Haidian District, Beijing, CN 100085 [Confirmed] — IEEE MA-L

Company status

active; trades as "New H3C Technologies Co., Ltd" (same 466 Changhe Road address, holds a separate MA-L set) [Confirmed] — https://www.h3c.com/en/About_Us/

Device types

LAN/campus/data-center switches, IP routers, WLAN APs and wireless controllers, firewalls/IPS/security appliances, UniServer servers, SAN/distributed storage, HCI, SD-WAN, edge/IoT gateways; consumer/SMB "Magic" router line (NX15, NX30 Pro, NX400, R3010, BE18000)

[Confirmed] — https://www.h3c.com/en/About_Us/, D&B company profile

Founding / ownership

founded 2003 as "Huawei 3Com Technologies" JV; 2007 3Com buys out Huawei → renamed H3C; 2010 HP acquires 3Com; 2015 Tsinghua Unigroup takes 51% (HPE keeps 49%); 2023 Tsinghua Unisplendour takes full ownership [Confirmed] — en.wikipedia.org/wiki/3Com, SCMP, LinkedIn (Daniel Chao "New H3C's history")

Verified sample prefixes (all MA-L)

B0:F9:63, 00:0F:E2, 80:F6:2E, 70:F9:6D, 38:91:D5, 00:23:89, 3C:E5:A6, AC:74:09 [Confirmed] — IEEE MA-L

Security note

multiple critical unpatched remote-command-injection CVEs in SMB "Magic" routers — CVE-2025-2725..2732, CVE-2025-3539/3540/3543 (command injection), CVE-2025-10942 (buffer overflow, Magic B3); historical CVEs in ER8300G2-X, GR2200, SecCenter SMP; enterprise Comware switch/router line tracked separately. Vendor PSIRT: https://www.h3c.com/en/Support/Online_Help/psirt/

[Confirmed] — BeyondMachines, TechRadar, Technijian, Ameeba, H3C PSIRT

Geopolitical note

since 2023 fully owned by Tsinghua Unisplendour (Unigroup), a state-affiliated PRC conglomerate; treated with supply-chain caution in some procurement frameworks; no formal FCC/NDAA listing confirmed as of knowledge cutoff [Likely] — SCMP

Allocated date

Unknown — IEEE publishes no OUI registration dates [Unknown]

Analyst note

an H3C globally-administered OUI reliably identifies genuine H3C/New-H3C hardware; for SMB Magic routers, verify firmware against PSIRT advisories given the active critical-CVE exposure.