The domain smmpanel.bd does not appear to have any DNS records, which suggests it may not be registered or active. You would need to use a subdomain (e.g., app.smmpanel.bd) or ensure the domain is properly registered and has active DNS before adding it as a custom domain on Railway.

i can Change Name Server

The domain smmpanel.bd currently has no DNS records resolving publicly, which is likely why it cannot be added. You'll need to first ensure the domain has active DNS by pointing its nameservers to a provider like Cloudflare, and since this is a root domain, your DNS provider must support CNAME flattening as described in our custom domains documentation.

i can put DNS Records Via cloudflare

Your domain's nameservers are now pointing to Cloudflare, but there are no DNS records (A, AAAA, or CNAME) configured yet. Try adding smmpanel.bd as a custom domain in your service's settings under Public Networking - once added, you'll receive a CNAME value (e.g., xyz.up.railway.app) that you then add as a CNAME record in Cloudflare with the name @, and Cloudflare will handle CNAME flattening automatically since this is a root domain. Full setup steps are in our custom domains docs.

Give me The DNS Records

The DNS records are generated after you add smmpanel.bd as a custom domain in your service settings. Go to your service's Settings, find Public Networking, click "+ Custom Domain", and type in smmpanel.bd. Once added, you'll see the CNAME value to add in Cloudflare.

Still getting the error

but i can change DNS Records

i add the domain in Cloudflare name server

I looked into this and found that the .bd top-level domain is being rejected by our domain validation system. This appears to be a bug on our end since .bd is a valid country-code TLD.

Workaround: Try adding a subdomain instead of the root domain. For example, use www.smmpanel.bd or app.smmpanel.bd. This may bypass the validation issue.

In Cloudflare, you would then add a CNAME record for www (or app) pointing to the Railway CNAME target shown after adding the domain.

I'll flag this internally so we can fix the root domain validation for .bd domains.