Just created a Wordpress blog and it is showing proper when I am home. But once i view it in office, it is showing the default page at where i registered my domain name, Namecheap.
Already clear the cache in the office browser as well. Not convinced, i view my blog on my mobile and it is showing proper. When I got my colleague to check for me, it is showing the default page in Namecheap.
Pressing CTRL + F5 a couple of times should get you a full refresh. As I said before there can be another cache between you and the site.
I haven't looked into this for a long time (since I stopped using an ISP that maintained a central cache quite a few years ago) but IIRC F5 alone (or the reload button on those old browsers) only refreshes the browser cache while using CTRL + F5 should force the browser right back to the original.