Quote Originally Posted by Greg View Post
I think I recall some Vermont ISPs another time being slow to update their DNS. I think it took several days that time.
There are plenty of free DNS servers to use these days

I usually set my devices to use this
easy to remember and fast propagation

Also quite often it's a local cache rather than ISP.. this command fixes that:
in windows, open command prompt
ipconfig /flushdns
On top of that browsers also cache DNS, so restart your browser