An attack maybe against wildcard certificates? A proxy attack?

I check the error logs on my server regularly, mostly to check for mis-configurations or check for bugs in code I've written. But lately, I've come across an interesting “security scan” (only in quotes because I think it's checking my security for its benefit) where this error from Apache (my webserver) is now coming up: AH02032: Hostname boston.conman.org provided via SNI and hostname qa.conman.org provided via HTTP have no compatible SSL setup And it's not just one or two hosts, but several dozen, spaced a few requests per second: no-such-host-8f3a1b.invalid admin.conman.org api.conman.org app.conman.org backup.conman.org beta.conman.org cdn.conman.org ci.conman.org confluence.conman.org dashboard.conman.org db.conman.org demo.conman.org dev.conman.org docker.conman.org elastic.conman.org git.conman.org grafana.conman.org internal.conman.org intranet.conman.org jenkins.conman.org jira.conman.org k8s.conman.org kibana.conman.org kube.conman.org mail.conman.org monitor.conman.org…

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