MAC Address Lookup
Find the vendor name of a device by entering an OUI or a MAC address
EMSTONE
MAC address prefix F4:49:EF is registered to EMSTONE, located at #1201Byeoksan Digital Valley 3rd271Digital-roGuro-Gu Seoul 08381KR.
This registration is classified as MA-L (Mac Address Block Large) containing approximately 16 million MAC addresses
The prefix was initially registered on 23 July 2017, with the most recent update made on 15 April 2026.
OUI: F4:49:EF
Vendor name: EMSTONE
Address:
Assignment Type MA-L #1201
Byeoksan Digital Valley 3rd
271
Digital-ro
Guro-Gu Seoul 08381
KR.
Mac Address Block Large (previously named OUI). Number of address 2^24 (~16 Million)
Last updated: 15 April 2026
Initial registration: 23 July 2017
