Wachendorff Automation MAC prefixes: registered vendor, device type unknown
Summary
- // what this is
- Wachendorff Automation GmbH & CO.KG is registered to MAC prefix
D4:90:E0and 1 more in the IEEE OUI database. When a device's MAC address begins withD4:90:E0, that block was registered by Wachendorff Automation GmbH & CO.KG — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- Both MA-L prefixes are 24 bits. Their first-byte Group bit and Local bit are each 0. Each leaves 24 suffix bits, allowing 16,777,216 possible values; this is not a device or shipment count. A prefix match identifies a registry assignment, not a specific device or current identity.
About this vendor.
A MAC address beginning D4:90:E0 or A8:D3:C8 matches an IEEE assignment to Wachendorff Automation GmbH & CO.KG; the available evidence does not identify a device type using either prefix. The company’s legal notice names Wachendorff Automation GmbH & Co. KG and describes it as an encoder and systems company. It lists incremental and absolute encoders, redundant encoders, motor feedback, measuring systems, and accessories in its product catalog, but does not map any product to these prefixes.
Both assignments are MA-L prefixes, each 24 bits long. In these exact prefixes, the first-byte Group bit and Local bit are both zero, consistent with individual, globally assigned address prefixes under RFC 7042. Matching all three prefix bytes identifies the registry assignment; it does not establish the device, its manufacturer today, or its security state. Each prefix leaves 24 suffix bits, or 16,777,216 possible suffix values. That is a mathematical address space, not a count of devices or shipments.
- Device type
- Unknown; no source maps a device category to these exact prefixes [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Matching prefixes
D4:90:E0andA8:D3:C8, each matched across 24 bits [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Registry
- MA-L; two assignments [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Company
- Wachendorff Automation GmbH & CO.KG [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Product categories
- incremental encoders, absolute encoders, redundant encoders, motor feedback, measuring systems, and accessories [Confirmed] — https://www.wachendorff-automation.com/legal-notice/
- Industry
- Encoders and systems [Confirmed] — https://www.wachendorff-automation.com/legal-notice/
- Website
- https://www.wachendorff-automation.com/legal-notice/ [Confirmed] — https://www.wachendorff-automation.com/legal-notice/
- Device types
- Unknown; no exact-prefix device mapping is supplied [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- General partner
- Wachendorff GmbH [Confirmed] — https://www.wachendorff-automation.com/legal-notice/
- Assignment date
- Assignment dates are unavailable in these IEEE CSV records. [Unknown] — https://standards-oui.ieee.org/oui/oui.csv