My website is visited twice a day by someone or something from Performance Systems International. Each visit is without a referring link and each time the D-block of the IP address (38.98.19.DDD) and the location of the server are different. Is this a search-engine bot spidering my website? Does anyone know which search-engine is behind it?
It's just basically a bot. Some more information is available at webmasterworld: http://www.webmasterworld.com/search_engine_spiders/3081823.htm
With a bit of help from this nice tutorials about blocking bots through .htaccess and IP banning through .htaccess I added the following lines of code to my .htaccess file: <Files *> order allow,deny deny from 38. allow from all </Files> Code (markup): Since the Performance Systems International Inc owns the entire IP range from 38.0.0.0 to 38.255.255.255, I decided to block them all.
If you setup IP blocks, you may want to have a system to alert you to changes in the IP allocation status. (Just in case, in 5 years there's a new Google and you are blocking it