DNS Propagation
What to do if your subdomain isn't resolving after your PR was merged.
Vercel shows "Invalid Configuration"
After your PR is merged but before DNS has propagated, Vercel's dashboard will show an "Invalid Configuration" warning on your domain. This is expected — Vercel is checking whether the CNAME record exists in DNS, and it hasn't propagated yet.
You don't need to do anything. Wait for DNS to propagate and the warning will go away automatically.
How long does propagation take?
DNS changes typically propagate within a few minutes after your PR is merged and the Cloudflare sync runs. In rare cases it can take up to 48 hours depending on your DNS resolver's TTL and cache.
How to check propagation
Use dig to query the CNAME record directly:
dig .is-pinoy.dev CNAMEA propagated record looks like this:
;; ANSWER SECTION:
.is-pinoy.dev. 300 IN CNAME <your-cname-target>.If the ANSWER SECTION is empty, the record hasn't propagated to your resolver yet.
You can also use whatsmydns.net to check propagation from multiple geographic locations simultaneously.
Still not live after 48 hours?
If more than 48 hours have passed since your PR was merged and your subdomain still isn't resolving, open an issue on the domains repository with:
- Your subdomain (e.g.
.is-pinoy.dev) - A link to your merged PR
- The output of
dig .is-pinoy.dev CNAME