MAC Address Lookup
Find the vendor name of a device by entering an OUI or a MAC address
EFFICIENT NETWORKS, INC.
OUI prefix: 00:20:EA
Vendor name: EFFICIENT NETWORKS, INC.
4201 SPRING VALLEY ROAD
DALLAS TX 75244-3666
Mac Address Block Large (previously named OUI). Number of address 2^24 (~16 Million)
Last updated: 17 November 2015
Initial registration: 22 April 1998