Hello dOOp,
I have an error maybe that's the cause ?
I tested with dnsenum
dnsenum ns1.digitalsfinx.com
Host's addresses:
ns1.digitalsfinx.com. 75413 IN A 88.137.144.244
Wildcards detected, all subdomains will point to the same IP address
Omitting results containing 88.137.144.244.
Maybe you are using OpenDNS servers.