Please contribute if you find a discrepancy due to rebadging!
Seems usually they aren't reassigned when someone buys an ether chip...
All other MAC identifiers in this database are sourced from IEEE

Ethernet MAC address Search Engine

Please enter your search query on the line below.
You can type in all 6 octets with period or colon delimiters like 02.60.8c.42.56.21, but it only uses the first 3 octets.
Type in the first 6 hex digits of the MAC address (e.g. 02608c, delimiters are OK) or a name (e.g. 3com, regular expressions are OK) and press ENTER.