This is an interesting problem I've run into. We have sonic.net VDSL service, with windows machines using our pfsense router for DNS queries, which get resolved to Sonic DNS servers: 208.201.224.11 and 208.201.224.33. Our workers have not been able to reach http://www.paypal.com for the last few days, on both our Windows machines and smartphones through wifi. Tried both Chrome and Firefox. Chome fails with this message: DNS_PROBE_FINISHED_NXDOMAIN. No problem reaching over mobile data.
In windows, if I set the DNS server explicitly to google (8.8.8.8), paypal resolves without a problem. On a linode server I host, I when I do nslookup to sonic dns servers, it responds with REFUSED, but is OK for other DNS servers (see attachment).
In windows, if I set the DNS server explicitly to google (8.8.8.8), paypal resolves without a problem. On a linode server I host, I when I do nslookup to sonic dns servers, it responds with REFUSED, but is OK for other DNS servers (see attachment).