This explanation is really helpful, especially for site owners who run into this error without realizing the domain may have been previously connected to another platform using NS1. The step-by-step breakdown of options makes it much clearer what to try next instead of guessing.
For sites like CapCut APK that focus on downloads and content delivery, having DNS set up correctly is critical to avoid downtime or SSL issues. Knowing that using external DNS is a valid and performant fallback is reassuring, and it’s good to see that contacting Support to clear the zone is still an option when Netlify DNS is preferred.
Thanks for documenting this so clearly—it saves a lot of time during setup and migrations. as explained in this support guide.