MAC Address Lookup
Find the vendor name of a device by entering an OUI or a MAC address
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IEEE Registrant 8 Prefixes
EFM Networks
EFM Networks manages 8 unique MAC address prefixes. These prefixes have a total block size of 134.2 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 14 December 2001, and the most recent update was made on 19 March 2024. These allocations support network identification and communication globally.
Unique prefixes 8
Block Size 134217720 (134.21 M)
First registration 14 December 2001
Last updated 19 March 2024
Entity Details
Unique prefixes 8
Block Size 134217720 (134.21 M)
First registration 14 December 2001
Last updated 19 March 2024
Types
MA-L: Block Type
Mac Address Block Large (previously named OUI). Number of address 2^24 (~16 Million)Registered MAC Prefixes
All Organizationally Unique Identifiers and MAC ranges assigned to this vendor