The prefix D8:5B:22 is an IEEE MA-L block registered to "Shenzhen Hohunet Technology Co., Ltd", a Shenzhen-based networking and AV-over-IP company founded in 2015. Hohunet designs and manufactures Ethernet switches across a wide range — SMB and campus switches up to data-center silicon in the 25G-to-800G class — plus cloud management (DHCS) and SONiC-ecosystem solutions, with much of its volume shipping through OEM/ODM partnerships. The company is an adopting member of the SDVoE Alliance, reflecting a product line that spans both general network switching and standards-based video-over-IP transport. Two angles agree on the core mapping: the company's own site (hohunet.com) confirms the legal name, Shenzhen location, and product scope, while independent IEEE-sourced lookups (maclookup.app and aruljohn.com) both return D8:5B:22 → Shenzhen Hohunet with the same registry-of-record address. The IEEE registry address — Huahan Technology Building, Langshan Road, Nanshan District, Shenzhen — is the block's address of record and differs slightly from the current corporate office the company lists (Lining Center, Shennan Avenue, Nanshan District); registry addresses lag relocations and should be read as the filing address, not necessarily today's HQ. A MAC beginning D8:5B:22 on a globally-administered (non-randomized) address reliably indicates Hohunet-built hardware, which in practice means a managed switch or an AV-over-IP transmitter/receiver rather than a consumer endpoint. As always, the absence of this OUI does not mean "not Hohunet," since OEM/ODM units may ship under a partner's prefix, and locally-administered or randomized addresses will not resolve here.
- IEEE assignment
- D8:5B:22 → Shenzhen Hohunet Technology Co., Ltd [Confirmed] — IEEE MA-L (via maclookup.app + aruljohn.com, two independent lookups agreeing)
- Registry / block size
- MA-L (24-bit OUI; ~16.7M addresses); one prefix on record for this vendor [Confirmed] — maclookup.app (IEEE-sourced)
- Registered address (registry of record)
- 8th Floor, Block A, Huahan Technology Building, No.16 Langshan Road, North District, Science Park, Nanshan District, Shenzhen, Guangdong 518000, CN [Confirmed] — IEEE MA-L (maclookup.app + aruljohn.com agree verbatim)
- Country
- CN [Confirmed] — IEEE MA-L
- Current corporate office (per company site; differs from registry address)
- Lining Center, No.9996 Shennan Avenue, Nanshan District, Shenzhen, CN; branch office in Chengdu [Confirmed] — hohunet.com
- Company status
- active [Confirmed] — hohunet.com
- Year established
- 2015 [Confirmed] — hohunet.com (company profile)
- Device types
- Ethernet switches (SMB, enterprise/campus, industrial, data-center 25G–800G); AV-over-IP transmitters/receivers; cloud management (DHCS); SONiC-ecosystem solutions [Confirmed] — hohunet.com
- Notable products
- managed network switches; SDVoE-based AV-over-IP transport
- Industry
- networking / AV-over-IP equipment [Confirmed] — hohunet.com, sdvoe.org
- Alliance membership
- SDVoE Alliance (adopting member) [Confirmed] — sdvoe.org press release
- No IEEE registration date
- IEEE's public OUI data publishes NO assignment/registration date (oui.csv columns are only Registry, Assignment, Organization Name, Organization Address). Third-party tools show "12 November 2022 / 2022-11-12" for this block — that is a database artifact, not an IEEE fact, and must not be presented as an IEEE registration date. [Confirmed that no IEEE date exists] — standards-oui.ieee.org/oui/oui.csv
- Related vendors
- Unknown (no documented subsidiaries or sibling registrations found)
- Analyst note
- D8:5B:22 on a globally-administered address identifies genuine Hohunet hardware — typically a managed switch or AV-over-IP node, not a consumer device. Because Hohunet ships heavily via OEM/ODM, some Hohunet-built units may present a partner's OUI; absence of D8:5B:22 does not rule out Hohunet manufacture.