ADVANTECH TECHNOLOGIES CO.,LTD — 00:14:53 (MA-L)

OUI prefix 00:14:53 is the sole MA-L block registered to "ADVANTECH TECHNOLOGIES CO.,LTD," a Korean-registered entity at #1202 Ace Techno Tower, 684-1, Seoul 157-721, Republic of Korea (Gangseo-gu). This is a distinct IEEE registrant from the rest of the Advantech corporate family, and the naming overlap is a real data-quality trap worth disambiguating up front. The Taiwan parent — ADVANTECH CO., LTD. (Taipei, TW) — holds separate blocks including 74:FE:48 and 00:D0:C9, the China subsidiary Advantech Technology (CHINA) Co., Ltd. (Jiangsu, CN) holds 00:0B:AB, C4:00:AD, CC:82:7F and 28:87:AF, and there are further separate registrants for Advantech Czech (C4:B1:6B, CZ) and Advantech AMT Inc. (00:0E:02, CA). The broader Advantech group (founded 1983) builds industrial computing and networking hardware: industrial PCs, embedded platforms, industrial Ethernet switches, cellular/LTE routers, protocol gateways, network-security appliances, and IoT edge systems — equipment that typically lands in industrial/OT (ICS, SCADA-adjacent) environments. Device specificity for this particular Korean OUI cannot be narrowed beyond "industrial networking / embedded computing" from available sources, so it is tagged accordingly. As with every OUI, the prefix identifies the IEEE registrant of genuine globally-administered hardware but is not by itself a security control: MAC addresses are trivially spoofable and locally-administered/randomized addresses do not resolve to any vendor.

IEEE assignment

00:14:53 → ADVANTECH TECHNOLOGIES CO.,LTD [Confirmed] — IEEE MA-L, maclookup.app/macaddress/001453

Registry / block size

MA-L (24-bit OUI; ~16.7M addresses) [Confirmed] — IEEE MA-L

Registered address

#1202 ACE TECHNO TOWER, 684-1, Seoul 157-721, Republic of Korea (Gangseo-gu) [Confirmed] — IEEE MA-L, uic.io/en/mac/vendor/advantech_technologies_co_ltd/

Country

South Korea (KR) [Confirmed] — IEEE MA-L

Assignment / registration date

Unknown — IEEE publishes NO assignment date for OUI/MAC prefixes; any "date registered" on third-party MAC tools is a database artifact, not an IEEE fact, and is not recorded here [Confirmed that no IEEE date exists] — standards.ieee.org/products-programs/regauth/

Corporate relationship

Korean entity in the Advantech family; distinct IEEE registrant from the Taiwan parent ADVANTECH CO., LTD. (74:FE:48, TW) and the China subsidiary Advantech Technology (CHINA) Co., Ltd. (00:0B:AB, CN)

[Confirmed] — uic.io, maclookup.app/vendors/advantech-co-ltd, maclookup.app/vendors/advantech-technology-china-co-ltd

Other registrations for THIS entity

none — no additional "Advantech Technologies" rows in MA-M (the IEEE MA-M registry) or MA-S (the IEEE MA-S registry) [Confirmed] — the cached registry snapshots

Device types

industrial computing / networking hardware (industrial PCs, embedded platforms, industrial Ethernet switches, cellular routers, protocol gateways, network-security appliances, IoT edge); no narrower device specificity confirmable for this OUI

[Likely] — advantech.com/en-us/about, us.advantech.com/intelligent-connectivity/network-solution

Vendor website

https://www.advantech.com/en-us (group); Korean market storefront https://iotmart.advantech.co.kr/ — no standalone domain found for this specific legal entity [Likely] — advantech.com, iotmart.advantech.co.kr

Security context

Advantech hardware is deployed in industrial/OT (ICS) networks; CVEs exist against Advantech product lines (e.g. WebAccess SCADA) but are documented against the Taiwan parent's products, NOT specifically this Korean OUI. No CVE/incident is attributable solely to 00:14:53; MAC-spoofing risk is generic to all OUI blocks

[Likely] — advantech.com/en-us/resources/video/industrial-cybersecurity-solutions

Analyst note

A 00:14:53 globally-administered address identifies genuine Advantech-registrant hardware; absence of it does not mean "not Advantech" (other family OUIs + randomization), and OUI alone is unreliable for inventory or MAC-based access control.