Verizon Fios is currently having a network-wide DNS outage that is causing users to not be able to connect to websites, retrieve email, or play online games. If you are experiencing issues with the Fios Internet, you can resolve the outage by changing your computer’s DNS settings temporarily to a non-Verizon DNS server. We recommend either using Cloudflare’s DNS server with the IP address of 1.1.1 or use the Google DNS server 8.8.8.
Source: https://www.bleepingcomputer.com/news/technology/verizon-fios-internet-is-having-an-outage-change-dns-to-fix/