http://www.***.net/yeni-baslayanlar/47942-www5-www3-bunlar-nedir.html

https://superuser.com/questions/144323/what-does-the-www8-or-www6-in-a-url-mean

https://forum.donanimhaber.com/www-bitti-simdi-www2-ve-www4-demi-sira--10201582?AspxAutoDetectCookieSupport=1

https://en.wikipedia.org/wiki/WWW2