I doubt the IAF would confirm any serial. I once asked them to confirm the ID of A Belgian Fouga in their museum. The response I got was “What Fouga, we don’t know about a Fouga and we sure never had a Belgian Fouga”.
Meanwhile it’s a well known fact they bought several Ex-Belgian Fouga’s in the 80’s. They never flew with them and were sold on to private buyers, but one stayed behind and is now in IAF colors in the museum marked as “212”. Maybe since they deny it exist, they can donate that ghost Fouga to me?:p