UHTEK CO., LTD. holds a single IEEE MA-L block, 88:3F:37, registered to an address in Bucheon-si, Gyeonggi-do, South Korea (postal code 14502). The block covers 88:3F:37:00:00:00 through 88:3F:37:FF:FF:FF — roughly 16.7 million addresses — and is the company's only IEEE allocation; it does not appear in the MA-M or MA-S registries. UHTEK is a Korean OEM/ODM manufacturer of IP-connected CCTV surveillance cameras and accessories. Its own product line lists IR Shield Dome, Large Bullet, and Standard Bullet cameras, and US Customs trade records corroborate exports described as "CCTV CAMERA AND ACCESSORIES." The practical consequence for asset classification: if 88:3F:37 appears on a network, the device is almost certainly a UHTEK-built IP camera or camera accessory — not a general-purpose router, switch, or endpoint — and may ship rebadged under a US security-integrator label (UHTEK's documented importers include Clinton Electronics, Costar Video Systems, Vitek, and Tri-Ed/Northern Video). No CVEs, CISA advisories, or UHTEK-specific vulnerability disclosures were found as of 2026-06-15, but IP surveillance cameras as a class carry well-known IoT risk (credential exposure, firmware-update hygiene, P2P cloud-relay protocols), so a dedicated surveillance VLAN is standard practice for this device class. A recurring data-quality trap: third-party lookup tools show a "2023-02-14" date for this OUI — that is a database record artifact, not an IEEE registration date. IEEE publishes no registration dates in its public OUI files.
- IEEE assignment
- 88:3F:37 → UHTEK CO., LTD. [Confirmed] — IEEE MA-L registry (regauth.standards.ieee.org), corroborated by api.maclookup.app/v2/macs/88:3F:37:00:00:00
- Registry / block size
- MA-L (24-bit OUI); single block 88:3F:37:00:00:00–88:3F:37:FF:FF:FF (~16,777,216 addresses) [Confirmed] — IEEE MA-L, api.maclookup.app. NOTE: IEEE's public OUI data publishes NO assignment/registration date; the "2023-02-14" shown on maclookup.app is a database artifact, not an IEEE fact.
- HQ / country
- 403-dong 503ho, 655 Pyeongcheon-ro, Bucheon-si, Gyeonggi-do 14502, KR (registry address) [Confirmed] — IEEE MA-L, api.maclookup.app. Trade records also reference an operating address: #504 201-dong, Bucheon Techno Park, 192 Yakdae-ro, Bucheon — likely operating vs. registered address; both consistently point to Bucheon, Gyeonggi-do, South Korea.
- Country code
- KR (South Korea) [Confirmed] — IEEE MA-L, api.maclookup.app/v2/macs/88:3F:37:00:00:00
- Company status
- active [Confirmed] — uhtek.co.kr (corporate site live; sales@uhtek.co.kr, +82 32 323 1723; business registration no. 130-86-88709)
- Device types
- IP/CCTV surveillance cameras and accessories — IR Shield Dome, Large Bullet, and Standard Bullet camera lines [Confirmed] — uhtek.co.kr/default/en/index.php, importgenius.com/suppliers/uhtek-co-ltd ("CCTV CAMERA AND ACCESSORIES")
- Notable products
- dome and bullet IP surveillance cameras (OEM/ODM, frequently rebadged by US integrators)
- Registration date
- Unknown [Unknown] — IEEE publishes no registration dates in the OUI registry; the third-party "2023-02-14" value is a database artifact, not an IEEE-sourced fact. No citation asserts an IEEE date.
- Registry presence
- present in MA-L only; NOT in MA-M (mam.csv) or MA-S (oui36.csv) registries [Confirmed] — enrichment/registries (oui.csv MA-L block; absent from mam.csv, oui36.csv)
- Industry / markets
- OEM/ODM CCTV manufacturing; primary export market is the United States [Confirmed] — importgenius.com/suppliers/uhtek-co-ltd, importyeti.com/supplier/uhtek
- Known customers
- Clinton Electronics Corp. (Loves Park, IL — dominant importer, 160+ containers), Costar Video Systems LLC (Los Angeles, CA), Vitek Industrial Video Products Inc. (Long Beach, CA), Tri-Ed/Northern Video (San Francisco, CA); shipped via Seattle and Los Angeles ports [Confirmed] — importgenius.com/suppliers/uhtek-co-ltd, importyeti.com/supplier/uhtek
- Security context
- no published CVEs, CISA advisories, or UHTEK-specific vulnerability disclosures found as of 2026-06-15. Device class (IP-connected cameras) carries known IoT risk (credential exposure, firmware-update hygiene, P2P cloud-relay protocols), but no UHTEK-specific incidents are on record [Likely] — importgenius.com/suppliers/uhtek-co-ltd, uhtek.co.kr (absence of UHTEK-specific advisories as of 2026-06-15)
- Website
- https://uhtek.co.kr [Confirmed] — uhtek.co.kr/default/en/index.php
- Analyst note
- 88:3F:37 on a network indicates a UHTEK-manufactured IP/CCTV camera or accessory, possibly sold under a US integrator label (Clinton Electronics, Costar, Vitek, etc.). It is not a general-purpose router, switch, or endpoint. Place on a dedicated surveillance VLAN per standard practice for this device class. [Likely] — api.maclookup.app/v2/macs/88:3F:37:00:00:00, importgenius.com/suppliers/uhtek-co-ltd