OUI 64:50:D6 is registered to Liquidtool Systems AG, a Swiss industrial-IoT company headquartered at Winterseistrasse 22 in Hasle-Rüegsau, Canton Bern, Switzerland. The block is an MA-L assignment, the standard 24-bit OUI granting the holder roughly 16.8 million unicast addresses. Liquidtool is a 2016 spin-off of Blaser Swisslube AG, the long-established Swiss metalworking-lubricant maker, and builds smart coolant-monitoring hardware for CNC machine shops and metal-cutting operations. Devices that carry this prefix are the Liquidtool Sensor 01 (coolant concentration, fill level, and temperature), the Liquidtool Manager control unit, the Extender for multi-machine connectivity, and the SmartFiller automated top-up unit. They connect over Wi-Fi/WLAN, Ethernet (RJ45), RS485, and Bluetooth for initial setup, and stream data to the MyLIQUIDTOOL cloud platform. Because these are OT/ICS-adjacent sensors that live on factory LAN/WLAN segments next to CNC machines rather than on the public internet, seeing 64:50:D6 in an inventory points to an industrial/manufacturing network, not a consumer or networking-gear vendor. The registry address corroborates the company's published HQ, and the prefix was independently corroborated by maclookup.app from April 2021. No CVEs or ICS advisories were found for Liquidtool products; the vendor markets in-sensor asymmetric signing of telemetry as a "security by design" measure. As with every OUI, IEEE publishes no assignment date, so no registration date is recorded for this block.
- IEEE assignment
- 64:50:D6 → Liquidtool Systems AG, MA-L [Confirmed] — enrichment/registries/oui.csv line 927; maclookup.app/macaddress/6450d6
- Registry / block size
- MA-L (24-bit OUI; ~16.8M unicast addresses) [Confirmed] — maclookup.app/vendors/liquidtool-systems. NOTE: IEEE's public OUI data publishes NO assignment/registration date; the "2021-04-13" on maclookup.app is a third-party database artifact (when the prefix first appeared in their scrape of the IEEE OUI list), not an IEEE fact, and is not recorded as a registration date.
- HQ / country
- Winterseistrasse 22, Hasle-Rüegsau, Bern 3415, Switzerland (CH) [Confirmed] — enrichment/registries/oui.csv line 927; maclookup.app/macaddress/6450d6
- Company status
- active [Confirmed] — liquidtool.com/en/company/; northdata.com (CHE-294.232.151)
- Device types
- industrial IIoT coolant-monitoring sensors and gateways for CNC/metalworking — Sensor 01, Manager, Extender, SmartFiller [Confirmed] — liquidtool.com/en/products/, liquidtool.com/en/products/sensor01/
- Connectivity
- Wi-Fi/WLAN, Ethernet (RJ45), RS485, Bluetooth (setup); telemetry to MyLIQUIDTOOL cloud [Confirmed] — liquidtool.com/en/products/sensor01/
- Company background
- 2016 spin-off / sister company of Blaser Swisslube AG; ~30 staff; registered CHE-294.232.151 [Confirmed] — liquidtool.com/en/company/, northdata.com/Liquidtool+Systems+AG
- Notable products
- Liquidtool Sensor 01, Manager, Extender, SmartFiller
- Industry
- industrial IoT / Industry 4.0 hardware for metal cutting and machining [Confirmed] — liquidtool.com/en/products/
- Allocated date
- Unknown — IEEE publishes no OUI registration dates; the maclookup.app "2021-04-13" is a database artifact and is intentionally left null [Confirmed null] — maclookup.app/macaddress/6450d6
- IANA reference
- none applicable to an OUI vendor entry [Unknown]
- Security context
- vendor markets asymmetric in-sensor telemetry signing ("security by design"); no CVEs or CISA ICS advisories found; OT/ICS-adjacent risk profile (factory LAN/WLAN segments) [Likely] — liquidtool.com/en/products/; NVD/CISA search returned no advisories
- Analyst note
- a 64:50:D6 address identifies Liquidtool industrial coolant-monitoring hardware on a manufacturing network; not a consumer or networking-equipment vendor. As always, OUI alone does not survive MAC randomization, but these are wired/industrial devices typically presenting their globally-administered address.