Denny,
I have changed hosting services 4-5 times over the post 12 years, and old hosting addresses persist in some ISP's DNS servers (and in local PC caches/histories).
Try to clear your browser cache.
And/or change your PC network settings for Domain Name Servers to:
8.8.8.8
and
8.8.4.4
Those "open" servers are well maintained. They work for me when I travel around the country and I find that I cannot get to a website that I know works.