Wildcards are in the version of the ACME spec at https://letsencrypt.github.io/acme-spec/ https://letsencrypt.github.io/acme-spec/: > A server MAY consider a c

Wildcards are in the version of the ACME spec at https://letsencrypt.github.io/acme-spec/ https://letsencrypt.github.io/acme-spec/: > A server MAY consider a client authorized for a wildcard domain if it is authorized for the underlying domain name (without the “*” label). Although this seems to be gone from https://ietf-wg-acme.github.io/acme/ https://ietf-wg-acme.github.io/acme/, which I think is the later version.