OUI Lookup
e41289
topsystem GmbH
Manufacturer Information
- OUI Prefix
- e41289
- Manufacturer
- topsystem GmbH
- Address
- Krefelder Straße 201 Aachen DE 52070
- Last updated
- 6/8/2026
Vendor Statistics
- Total prefixes
- 1
- Block type
- MA-L
- Available addresses
- ~16 millones
About prefix E41289
The OUI prefix E41289 is assigned to topsystem GmbH, based in Krefelder Straße 201 Aachen DE 52070 . It is a MA-L type block of 24 bits (first three octets). Allows up to 16 million unique MAC addresses. If you find this prefix on your network, the devices belong to topsystem GmbH.