I've got a MacBook Air 2013 running 10.14, and loading all pages either stalls for multiple seconds on "Resolving host" and only loads after a painful delay or it completely fails and Chrome shows me a "Could not resolve DNS error." This is consistent across browsers, so I'm inclined to believe this is an OS issue.
What's throwing me for a loop is: this only happens on one network! The router has a 2.4Ghz and a 5Ghz network, and they both have this problem. The only way I can use the internet without tearing my hair out is to tether to my phone.
Any ideas? Maybe I have a forgotten DNS setup that only fails on this router/ISP combo and I need to reset my DNS settings?