Hello, Is rep.mailspike.net working for you?
If I query 78.153.140.99 at https://mailspike.io/ip_verify I get 127.0.0.11, however if I query using dig I get no answer at all, and the name server itself does not exist. > dig +short -t A 99.140.153.78.rep.mailspike.net [no answer] > dig @1.1.1.1 +short -t A rep.mailspike.net [no answer] > dig @8.8.8.8 +short -t A rep.mailspike.net [no answer] > dig @127.0.0.1 +short -t A rep.mailspike.net [no answer]