Licensing is paperwork. The SQL instance doesn't know whether it's licensed or not, check with the people who buy your software licenses, see what SQL licenses you have, then compare that with what you have installed in your environment.
Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability
We walk in the dark places no others will enter
We stand on the bridge and no one may pass