The issues appear to be resolved now and we are monitoring to confirm the resolution.
Posted Dec 17, 2020 - 17:43 PST
We have disabled API calls to our service which change or create DNS records. DNS queries for existing records are working normally, but domains may not be purchased, and DNS records cannot be created, deleted, or modified at present and our UI will prevent you from doing so.
Posted Dec 17, 2020 - 16:05 PST
We are currently investigating an issue which is impacting Netlify DNS domain management, wildcard Let's Encrypt certificate issuing and domain orders.