I used CloudFlares 1.1.1.1 and 1.0.0.1 DNS servers on my router at home and I had a strange issue with the DNS servers. Some websites were not accessable at times but then other times they were accessable. The websites affected included now.dstv.com and etoro.com. The reason I suspect it is the DNS is that as soon as I changed the DNS from CloudFlares to my ISP's DNS then the issue was no longer. After a brief google search I didn't seem to find anyone else having the same issue so I brought the issue here.