SIEB & MEYER AG MAC Prefixes: Vendor Identified, Device Unknown
Summary
- // what this is
- SIEB & Meyer is registered to MAC prefix
00:01:84and 1 more in the IEEE OUI database. When a device's MAC address begins with00:01:84, that block was registered by SIEB & Meyer — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- Each supplied prefix is 24 bits, with 24 suffix bits and 16,777,216 possible suffix values per prefix. In each exact prefix the first-byte Group and Local bits are zero. A prefix match indicates a registry assignment, not a specific product, device, or observed deployment.
About this vendor.
A MAC address beginning with 00:01:84 or 1C:44:55 matches an IEEE MA-L assignment to SIEB & MEYER AG or the similarly named Sieb & Meyer AG record; the match does not identify a device category or product. The supplied evidence does not map either prefix to a specific device or product. A prefix match identifies a registry assignment, not current legal identity, deployment, traffic prevalence, or security state.
Both prefixes are 24 bits long, leaving 24 suffix bits and 16,777,216 possible suffix values per prefix. These are address-space possibilities, not a count of devices, shipments, or observed addresses. In both exact prefixes, the first-byte Group bit and Local bit are zero. The boundary is the first 24 bits: the remaining 24 bits vary within that prefix. Changing either first-byte bit changes the prefix and does not describe variation within the fixed assignment.
The company history page describes SIEB & MEYER AG as family-run and traces its beginnings to a Hamburg workshop in 1962. It lists NC controls, frequency converters, and servo amplifiers among the company's products, and describes CNC control systems for printed-circuit-board drilling and routing. It also identifies the SD4x development platform as the basis for a frequency-converter and servo-amplifier series. This company-level product information does not establish which products, if any, use these prefixes.
RFC 7042 explains the structure and interpretation of 48-bit MAC identifiers and the Group and Local bits.
- Vendor match
- SIEB & MEYER AG is the organization named in the
00:01:84MA-L record; a second similarly named record isSieb & Meyer AGfor1C:44:55. - Device class
- Unknown; no supplied evidence maps a device category to either exact prefix.
- Matching boundary
- Both assignments cover the first 24 bits; the last 24 bits can take 16,777,216 possible values for each prefix.
- Address bits
- The first-byte Group and Local bits are both zero in each exact prefix.
- Company
- SIEB & MEYER AG [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Registry
- MA-L [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Prefixes
00:01:84,1C:44:55[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Country
- Germany [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Industry
- Control and drive electronics, including CNC controls for printed-circuit-board drilling and routing [Confirmed] — https://www.sieb-meyer.com/news/press-releases/articles/60-years-sieb-meyer
- Notable products
- NC controls, frequency converters for high-speed motors, high-dynamic servo amplifiers, CNC control systems, and the SD4x-based frequency-converter/servo-amplifier series [Confirmed] — https://www.sieb-meyer.com/news/press-releases/articles/60-years-sieb-meyer
- Device types mapped to these prefixes
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Company history
- The company history page says it began in 1962 and moved to Lueneburg in 1967 [Confirmed] — https://www.sieb-meyer.com/news/press-releases/articles/60-years-sieb-meyer