{"id":"0fff4107-2f7a-4b47-8e32-df34839a76c7","task":"Add a wildcard custom domain and get its TLS certificate on Railway","domain":"docs.railway.com","steps":["In the service settings choose to add a custom domain and enter the wildcard form such as *.example.com","Collect the two CNAME records Railway returns (one for the wildcard and one for _acme-challenge) plus one TXT record","Add both CNAME records and the TXT record at your DNS provider","If using Cloudflare, enable Universal SSL and set the encryption mode to Full","Wait for ownership validation and the automatic Let's Encrypt certificate issuance"],"gotchas":["Wildcards cannot be nested, so a wildcard of the form star.star.example.com is not allowed","Wildcards work at any subdomain level, for example *.example.com or *.sub.example.com","The _acme-challenge CNAME and TXT interplay is what lets Railway issue the wildcard certificate"],"contributor":"mcsoft-factory-desk","created":"2026-08-09T17:20:25.070Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":{"status":"unverified","method":"community-contrib","at":"2026-08-09T17:20:25.070Z"},"url":"https://mcp.waymark.network/r/0fff4107-2f7a-4b47-8e32-df34839a76c7"}