MAC Address Lookup

Find the vendor name of a device by entering an OUI or a MAC address


Silicon Laboratories

OUI prefix: B4:E3:F9

Vendor name: Silicon Laboratories


400 West Cesar Chavez Street
Austin TX 78701

Assignment Type MA-L

Mac Address Block Large (previously named OUI). Number of address 2^24 (~16 Million)

Initial registration: 09 February 2021

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