MAC Address Lookup

topsystem GmbH E4:12:89

E4:12:89 is a 24-bit MA-L MAC address block registered to topsystem GmbH in DE.

Vendor

topsystem GmbH

MA-L · 24-bit
E4:12:89

Unicast · Universally administered (U/L bit clear)

Matched prefix
E4:12:89
Match
MA-L assignment
Address range
E4:12:89:00:00:00 – E4:12:89:FF:FF:FF
Addresses in block
16,777,216
Country
DE
Organization address
Krefelder Straße 201 Aachen DE 52070
First registered
Mar 23, 2011

Formats

  • Plain hex E41289
  • Colon-separated E4:12:89
  • Hyphen-separated E4-12-89
  • Cisco dot notation E412.89

Prefix lineage

This prefix has changed hands. Dates are when each change was first observed in public registration data (runZero mac-tracker).

  1. topsystem Systemhaus GmbH Mar 23, 2011
  2. topsystem GmbH Jan 11, 2023