MAC Address Lookup
Find the vendor name of a device by entering an OUI or a MAC address
ESSYS
ESSYS accessible at www.essys.co.kr, manages 5 unique MAC address prefixes. These prefixes have a total block size of 83.9 million addresses.
The allocation includes the following types: MA-L(Mac Address Block Large, 16,777,216 addresses each).
The company registered its MAC address allocation on 13 December 2013, and the most recent update was made on 28 May 2026. These allocations support network identification and communication globally.
Unique prefixes: 5
Block Size: 83886075 (83.88 M)
First registration: 13 December 2013
Last updated: 28 May 2026
Types
MA-L:Mac Address Block Large (previously named OUI). Number of address 2^24 (~16 Million)