MAC Address Lookup
Find the vendor name of a device by entering an OUI or a MAC address
topsystem GmbH
MAC address prefix E4:12:89 is registered to topsystem GmbH, located at Krefelder Straße 201Aachen 52070DE.
This registration is classified as MA-L (Mac Address Block Large) containing approximately 16 million MAC addresses
The prefix was initially registered on 07 May 2011, with the most recent update made on 11 January 2023.
OUI: E4:12:89
Vendor name: topsystem GmbH
Address:
Assignment Type MA-L Krefelder Straße 201
Aachen 52070
DE.
Mac Address Block Large (previously named OUI). Number of address 2^24 (~16 Million)
Last updated: 11 January 2023
Initial registration: 07 May 2011
