Why is the delta site being blocked...

[vEEP pEEP]

Hello,

I went to Deltas site and got this:
Access Denied
You don't have permission to access "http://www.delta.com/" on this server.
Reference #18.9c2bf648.1523825905.4b474465

This site also keep telling me it is blocked:
https://book.sunwing.ca/cgi-bin/resultspackage-plus.cgi
It keeps coming back with a Captcha

I went to another computer on the same network - its fine. Both sites work

So I check the Windows Defender but can't find the an area with this site blocked.
Also Comodo - I have the running - but I disabled it - same issue.

Suggestions on where to look?

Thanks,

Mr. V

 

[xandros9]

Does it occur with different web browsers on the same PC? That's very interesting though, is this at a workplace, home network or...?

 

[vEEP pEEP]

Does it occur with different web browsers on the same PC? That's very interesting though, is this at a workplace, home network or...?

Fails on all web browser on this computer. I suspect firewall or some sort of exclusion but can't find it.any tools like traceroute that might help?