OUI prefix 88:58:BE is a single MA-L block (the classic 24-bit assignment covering 16,777,216 addresses) registered to "kuosheng.com" at Room 103, Building 15 of Headquarters Center, No. 555 North Panyu Ave, Guangzhou, Guangdong, China. The registrant is named by its domain rather than a formal company name, which is common for smaller Chinese hardware and trading firms. The public-facing identity at kuosheng.com is "扩声网," a professional audio and sound-reinforcement e-commerce marketplace (microphones, amplifiers, mixing consoles, PA gear) rather than a manufacturer's site — so the most likely reading is a trading or OEM-reselling operation that ships some connected audio/AV hardware, though this is inferential and not directly confirmed. The site was unreachable (ECONNREFUSED) at the time of research, and WHOIS for the domain is privacy-protected via Alibaba Cloud, so no firmer corporate identity could be pinned down. No specific device type, FCC filing, or public scan-data sighting bearing this prefix was found, so device type stays Unknown. There are no CVEs, botnet associations, or other adverse security signals tied to this prefix or registrant. A separate "Shandong Kuosheng Intelligent Technology" (kuoshengcn.com, medical devices) is an unrelated company and should not be conflated with this entry. As always for IEEE OUIs, no registration date applies: IEEE publishes none, and the "December 1, 2022" value shown on third-party lookups is a database artifact, not an authoritative date.
- IEEE assignment
- 88:58:BE → kuosheng.com, Guangzhou, Guangdong, CN [Confirmed] — IEEE MA-L (enrichment/registries/oui.csv line 339), corroborated by https://maclookup.app/vendors/kuosheng-com
- Registry / block size
- MA-L (24-bit OUI; 16,777,216 addresses) [Confirmed] — IEEE MA-L registry; https://maclookup.app/vendors/kuosheng-com
- Organization
- kuosheng.com (registrant named by domain, not a formal company name) [Confirmed] — IEEE MA-L registry
- HQ / country
- Room 103, Building 15 of Headquarters Center, No. 555 North Panyu Ave, Guangzhou, Guangdong, CN 511493 [Confirmed] — IEEE MA-L registry; https://maclookup.app/vendors/kuosheng-com
- No IEEE date
- IEEE's public OUI data (Registry, Assignment, Organization Name, Organization Address) carries NO registration date; the "December 1, 2022" on maclookup.app is a third-party database artifact, not an IEEE fact [Confirmed] — https://maclookup.app/vendors/kuosheng-com
- Domain context
- kuosheng.com presents as "扩声网," a Chinese professional-audio / sound-reinforcement e-commerce marketplace (mics, amps, mixers, PA equipment) — a storefront, not a manufacturer page [Likely] — http://www.kuosheng.com/ , https://audioapp.cn/news/kuosheng/
- Website reachability
- kuosheng.com returned ECONNREFUSED (unreachable) as of 2026-06-16; domain WHOIS registered 2010-06-02, registrant privacy-protected via Alibaba Cloud, country CN/Guangdong [Confirmed] — https://who.is/whois/kuosheng.com
- Device types
- Unknown — no FCC filings, public scan-data hits, forum sightings, or third-party device records found for this prefix; the audio-marketplace context only hints at possible connected audio/AV products [Unknown] — no corroborating source found
- Company status
- Unknown — public site unreachable and WHOIS privacy-masked; no independent confirmation of operating status [Unknown] — https://who.is/whois/kuosheng.com
- Security signals
- no CVEs, threat-intelligence reports, botnet/malware associations, or other adverse signals found for 88:58:BE or kuosheng.com [Confirmed] — no adverse source found across public security data
- Data trap
- "Shandong Kuosheng Intelligent Technology" (kuoshengcn.com, medical devices) is a DIFFERENT, unrelated company — do not conflate with this registrant [Confirmed] — distinct domain/entity, not the OUI holder
- Analyst note
- 88:58:BE on a globally-administered address identifies hardware shipped by/for this registrant, but with no confirmed device type, treat the device class as unverified; do not infer a product line from the audio-storefront context alone.