I would recommend routing all your traffic through Cloudflare and using their DNS. Instructions for setup can be found here: https://developers.cloudflare.com/fundamentals/manage-domains/add-site/

Thanks for response, I followed steps, iam able to see DNS in cloudfare. But i am not able to add railway url as CNAME in cloudfare. It says "An A, AAAA, or CNAME record with that host already exists. For more details, refer to <https://developers.cloudflare.com/dns/manage-dns-records/troubleshooting/records-with-same-name/>."

I dont have any railway related host already added.
And railwaiy service shows "Proxy Detected" but "Record not yet detected"

Hi Faraz,

You must have another DNS record that is an A, AAAA or CNAME record for your root domain. You can’t have more than one. Look for the duplicate and see if it can be modified with your new content value and change record type if needed.

Apparently Hostinger doesn’t allow root CNAMES, they support CNAME just not root cnames…

Looks like it was discussed in another thread a few months ago . And cloud flare or similar DNS was recommended as a workaround.

https://station.railway.com/questions/adding-a-hostinger-domain-custom-domain-180d556a