Domain checker issue

This morning i ran a search on a domain name that i own, just to see what bother extensions were available i was surprised to see the name i searched: strongnet.net came back as available as did the .com

So i searched again and they showed as taken, the again and they showed as available

I searched another name which i knew were taken, and the .com and .net showed as available. Another searched showed them as taken

This problem seems to only affect .com and .net that i can see, and its only happened since my upgrade to 5.2.5