148ffcc6_n___NETBIOS_nameserver_scanner__Meaning
[Token] ? [Meaning] 
This means that the remote is advertising a NETBIOS resource record that we don't understand, and it can prompt us to run the scan again with the -f option and research it: we hope to use this feedback to make the program smarter in the future.
nbtscan - NETBIOS nameserver scanner
Meaning