[leonfs]

If you haven't done anything, someone else might have. Check your router logs for strange devices and activity in your network, also check your machine/s for malware.

[d2wa]

(Author here.) Plenty of logging of outgoing connections and DNS. Nothing out of the ordinary.

[Jamie9912]

Is your IP address listed on https://www.abuseipdb.com/ or any other spam blocklists?