DNS Flag Day February 1, 2019 – Ensure Your Institution is Prepared

TLP:WHITE (Public Distribution)

On Friday, February 1, major DNS (Domain Name System) software and public DNS providers will remove
support for workarounds accommodating authoritative DNS servers that don’t follow published operational
standards1.

Most EDU sites will not be affected; however, institutions using authoritative servers that don’t
meet standards may find their IT-based resources unreachable by large portions of the Internet.

Source: REN-ISAC: DNS Flag Day