CanTops Co., Ltd. — 90:2C:FB (MA-L)

CanTops Co., Ltd. holds the MA-L block 90:2C:FB, registered to a Suwon address (A-1002, Digital Empire, 16 Deogyong-daero 1556beon-gil, Yeongtong-gu, Suwon-si, Gyeonggi-do, KR). CanTops is a South Korean industrial-automation company, founded 2004, that builds operational-technology hardware for semiconductor and flat-panel-display fabs — specifically AMHS (Automated Material Handling System) control devices. Its flagship line is the Hybrid PIO (e.g. CTS-HPIO-25 / CTS-HCOM), a SEMI-E84/E23-compliant non-contact parallel-I/O interface that combines 5 GHz RF, 2.4 GHz RF, and IR to signal handoffs between overhead-hoist-transport / AGV vehicles and fab equipment; the catalog also includes 134.2 kHz and 13.56 MHz RFID readers, industrial USB digital-I/O boards, Ethernet DIO and Ethernet motion-control boards, and an IoT hub for AMHS fault diagnosis. The MAC-registering product line is the wireless Hybrid PIO: its FCC filing (ID RMNCTS-HCOM) confirms dual-band operation at 2403–2480 MHz and 5728–5825 MHz. Documentation emphasizes electromagnetic-noise avoidance and SEMI protocol compliance rather than cryptographic hardening (no mention of WPA2/WPA3, encryption, or explicit authentication), and no public CVEs or security advisories were found for CanTops products. These are closed-network fab devices: a 90:2C:FB address most plausibly signals AMHS automation gear inside a semiconductor or display manufacturing facility, not anything public-facing.

IEEE assignment

90:2C:FB → CanTops Co,.Ltd., MA-L (24-bit OUI) [Confirmed] — IEEE oui.csv (enrichment/registries/oui.csv line 620; manuf line 43196), https://standards-oui.ieee.org/oui/oui.csv

Registry / block size

MA-L (MAC Address Block Large, 24-bit OUI / ~16.7M addresses) [Confirmed] — IEEE oui.csv. NOTE: IEEE's public OUI data publishes NO assignment/registration date (columns are only Registry, Assignment, Organization Name, Organization Address); any "date registered" on third-party MAC tools is a database artifact, not an IEEE fact.

HQ / country

A-1002, Digital Empire, 16 Deogyong-daero 1556beon-gil, Yeongtong-gu, Suwon-si, Gyeonggi-do, KR (Republic of Korea) [Confirmed] — IEEE oui.csv registry address, https://cantops.com/eng/

Company status

active; founded 2004 [Confirmed] — https://cantops.com/eng/, https://www.ethercat.org/en/members/members_9AE49045A10A4499BA151D54F1B0443F.htm

Device types

industrial OT / AMHS control hardware for semiconductor & display fabs — Hybrid PIO (SEMI-E84/E23 non-contact wireless I/O; CTS-HPIO-25, CTS-HCOM), RFID readers (134.2 kHz, 13.56 MHz), USB DIO control boards, Ethernet DIO & motion-control boards, AMHS IoT fault-diagnosis hub [Confirmed] — https://cantops.com/eng/product-menu/h-pio-e84sensor/, https://cantops.com/eng/product-menu/usb-dio-control-board/, https://expo.semi.org/japan2025/public/eBooth.aspx?BoothID=631221&Task=Products

Wireless / RF profile

MAC-registering line is the wireless Hybrid PIO — dual-band 2403–2480 MHz (2.4 GHz) and 5728–5825 MHz (5 GHz) plus IR [Confirmed] — FCC ID RMNCTS-HCOM, https://fccid.io/RMNCTS-HCOM/User-Manual/Users-Manual-2996823

Industry memberships

EtherCAT Technology Group member; SEMICON Japan 2025 exhibitor (booth W3749); SEMI standards ecosystem (SEMI-E84/E23-compliant products) [Confirmed] — https://www.ethercat.org/en/members/members_9AE49045A10A4499BA151D54F1B0443F.htm, https://expo.semi.org/japan2025/public/eBooth.aspx?BoothID=631221&Task=Products

Website

https://cantops.com/eng/ [Confirmed] — https://cantops.com/eng/

Security context

closed fab-internal OT/AMHS hardware; documentation stresses noise immunity and SEMI compliance, not cryptographic security (no WPA2/WPA3/encryption/auth hardening cited); no public CVEs found. A 90:2C:FB sighting most likely indicates AMHS automation gear inside a semiconductor or display fab, on a private network rather than public infrastructure. [Likely] — https://fccid.io/RMNCTS-HCOM/User-Manual/Users-Manual-2996823, https://cantops.com/eng/product-menu/h-pio-e84sensor/

Registration date

Unknown — IEEE publishes no registration date for OUI/MA-L assignments; third-party "date registered" fields are database artifacts. [Unknown] — IEEE oui.csv

Analyst note

90:2C:FB on a globally-administered address reliably maps to genuine CanTops hardware. Given the product line is fab-floor AMHS control gear, the realistic deployment context is an access-controlled semiconductor/display manufacturing environment.