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MAC prefix B4:3A:31

Assigned by the IEEE to Silicon Laboratories.

Prefix
B4:3A:31   B4-3A-31   B43A.31
Block type
MA-L (16,777,216 addresses)
Address range
B4:3A:31:00:00:00 – B4:3A:31:FF:FF:FF
Organization
Silicon Laboratories
Registered address
400 West Cesar Chavez, Austin TX 78701, US
Country
United States (US)
Address bits
Unicast (I/G bit 0), globally unique (U/L bit 0)

Look up B4:3A:31:00:00:00

Silicon Laboratories holds 76 blocks in total: see all. Source: IEEE Registration Authority public listing.