Question

How to fix Cloudflare 523 origin unreachable

523 often means Cloudflare cannot route traffic to your origin IP.

Checklist

1. Verify current origin public IP.
2. Verify DNS A record points to that IP.
3. Check route and network ACLs.

dig +short llmsfile.com A
dig +short www.llmsfile.com A
ip route
curl -I http://ORIGIN_IP

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