Symptom of it being a primary cause would be no loading, then all of a sudden loading of site. However, I've had intermittent connection with HN, so not sure that is necessarily the primary. Edit: clearly spell check is down.
Thanks for the tip. I'll pass this along to our users.
Google provides alternatives at 8.8.8.8 and 8.8.4.4
My local network has those as the default nameservers, and my laptop has them set manually as well. Still having problems.
Normally, ISP name resolution is the first thing I look at, but this seems atypical.