Sorry for the delay in getting back... had some RL stuff going on.
Turns out my service provider has some kind of glitch in their servers that is causing NCWW to be blocked to my service.(... this is the only site that is blocked.) In conversations with the ISP's help line the Tech had me uncheck TCP/IPv6 and under TCP/IPv4/Properties check ‘Use the following DNS server address: 8.8.8.8, that cured the problem... or so I thought! Turns out that sometimes it works, sometimes not.
This tip did not offer any relief.
That's the Google DNS servers, and if you only changed the Preferred DNS server and left your ISP in place for the Alternate DNS server, the computer will sometimes hit the ISP server and you'll get the issue again. I've switched my Preferred DNS to 8.8.8.8 and my Alternate to 8.8.4.4 (another Google DNS Server)
Flushing the DNS cache did not help in connecting up directly.
After more conversations with the help line the ISP is sending out a Tech with a new modem on Tuesday and hopefully that will fix the problem.
***The new modem seems to be the fix.
The NCWW site loads as expected now and everything seems to be OK. This new modem has far greater speed (30-40mbps), but I don't know if that has anything to do with the issue.
Thanks again for all the help in resolving this issue.