My website blocked to anyone with Comcast provider

[roseabq]

For over a year anyone with COMCAST as internet provider cannot see my Highlands University/State Forestry site. I have been told to reset 'my' modem but this is a problem for every Comcast customer trying to access this site, statewide.

The site is: http://www.nmfwri.org 

PLEASE HELP
We have to enter the live site with the DEV URL we assigned when building the site 3 years ago.  
http://krakow.zentraal.com/  

[BruceW]

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@roseabq wrote: ... http://www.nmfwri.org  ... http://krakow.zentraal.com/  

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Both of those links have extra non-printing characters that may confuse a browser. However, http://www.nmfwri.org/ works fine, for me at least.

When Comcast customers try to use your link, what happens exactly?