Time to check your DNS settings!
The event for organizations and IT pros known as “Domain Name System Flag Day” will kick off on Friday, Feb. 1, 2019.
On that day, DNS providers will start to release new software updates that will stop supporting the old workarounds that currently exist for the DNS resolution process in some implementations. The old workarounds are typically found in the older DNS software that’s out there. A notification on the coming DNS Flag Day was issued this week by US-CERT.