SINOBONDER Technology Co., Ltd. — 7C:6A:8A (MA-L)

SINOBONDER Technology Co., Ltd. holds the single IEEE MA-L block 7C:6A:8A, registered to an address in the Dongcheng District of Dongguan, Guangdong, China. Unlike a consumer-electronics or networking vendor, SINOBONDER is an industrial-equipment maker: its products are capital machines for optoelectronics manufacturing — Optical Sub-Assembly (OSA) alignment and welding machines, OSA filter bonders, die bonders, and wire bonders. A MAC address bearing this prefix therefore does not belong to a router, switch, phone, or IoT gadget; it belongs to an embedded controller inside a piece of factory-floor assembly equipment. The reason such a machine carries an OUI at all is industrial networking: SINOBONDER is a member of the EtherCAT Technology Group, and EtherCAT is a real-time Ethernet fieldbus used inside machine cells for motion control and I/O. Devices with this prefix are best understood as EtherCAT slave nodes or internal machine controllers that live on isolated operational-technology (OT) networks, not on the public internet. For asset-classification work this is the useful signal: seeing 7C:6A:8A on a network strongly implies industrial optoelectronics tooling, and its appearance outside a shop-floor segment would itself be worth investigating. No CVEs, Shodan exposures, or public security advisories were found for the vendor; the realistic risk model is the standard ICS/OT one — lateral-movement exposure if the machine network is bridged to corporate IT, plus the general supply-chain considerations for industrial hardware.

IEEE assignment

7C:6A:8A → SINOBONDER Technology Co., Ltd. (single MA-L block) [Confirmed] — local IEEE OUI registry (enrichment/registries/oui.csv line 134); cross-checked aruljohn.com/mac/7C6A8A and maclookup.app/vendors/sinobonder-technology-co-ltd

Registry / block size

MA-L (24-bit OUI / EUI-48 large block; ~16.7M addresses) [Confirmed] — enrichment/registries/oui.csv line 134, maclookup.app. NOTE: IEEE's public OUI data publishes NO assignment/registration date; the oui.csv columns are only Registry, Assignment, Organization Name, Organization Address. Any "date registered" on third-party tools is a database artifact, not an IEEE fact.

HQ / country

Building 1, No. 245, Guanchang Road, Dongcheng District, Dongguan, Guangdong 523000, China (CN) [Confirmed] — enrichment/registries/oui.csv line 134, aruljohn.com/mac/7C6A8A

Registration date

Unknown. IEEE publishes none; the local CSV contains none. A maclookup.app "first seen" value of 2023-03-23 exists but is a third-party database-ingestion artifact, NOT an IEEE registration date — recorded here only as a lower-bound sighting, not attributed to IEEE. [Unknown for IEEE date; third-party first-seen Likely] — maclookup.app/vendors/sinobonder-technology-co-ltd

Registry presence

found in oui.csv only; NOT present in mam.csv (MA-M) or oui36.csv (MA-S) [Confirmed] — enrichment/registries/oui.csv, mam.csv, oui36.csv

Company status

active industrial-equipment manufacturer [Likely] — single source (EtherCAT Technology Group member directory); vendor website www.sinobonder.com had an expired TLS certificate and HTTP also failed to load as of June 2026, so direct confirmation from the vendor site was not obtained

Device types

industrial optoelectronics assembly machinery — OSA alignment & welding machines, OSA filter bonders, die bonders, wire bonders; NOT consumer or IT-network devices [Confirmed assignment-type, Likely product specifics] — ethercat.org member directory (members_05C7BA1BAEFB4C3F91454B483DA650D9.htm)

Industry memberships

EtherCAT Technology Group (ETG) member [Confirmed] — ethercat.org member directory

Network context

EtherCAT is an industrial real-time Ethernet fieldbus for in-cell motion control and I/O; devices with this prefix are almost certainly embedded EtherCAT slave nodes / machine controllers on isolated OT/shop-floor networks, not internet-facing equipment [Likely] — ethercat.org member directory (single corroborating angle; inference from EtherCAT's role)

Security context

no CVEs, Shodan exposures, threat-intel hits, or public advisories found. Risk model is OT/ICS: lateral movement if the machine network is bridged to corporate LAN, plus general industrial supply-chain considerations. Vendor-site TLS certificate expired (observed June 2026) is a minor web-hygiene note, not a device-level finding. [Likely — absence of evidence, not a clean bill] — no positive citation; based on negative search results

Vendor website

www.sinobonder.com (TLS certificate expired and HTTP load failed as of June 2026) [Confirmed] — ethercat.org member directory

Analyst note

7C:6A:8A is a reliable signal for SINOBONDER industrial optoelectronics tooling. It should appear on OT segments; surfacing on a general IT or internet-facing network is anomalous and worth investigating. Do not treat the 2023-03-23 third-party date as an IEEE registration date.