MAC Address Lookup
Find the vendor name of a device by entering an OUI or a MAC address
EM
IEEE Registrant 2 Prefixes
EMSTONE
EMSTONE manages 2 unique MAC address prefixes. These prefixes have a total block size of 33.6 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 23 July 2017, and the most recent update was made on 03 June 2026. These allocations support network identification and communication globally.
Unique prefixes 2
Block Size 33554430 (33.55 M)
First registration 23 July 2017
Last updated 03 June 2026
Entity Details
Unique prefixes 2
Block Size 33554430 (33.55 M)
First registration 23 July 2017
Last updated 03 June 2026
Types
MA-L: Block Type
Mac Address Block Large (previously named OUI). Number of address 2^24 (~16 Million)