So I decided to run a leaktest tonight and I received the following (and only) result:
18.104.22.168 v130.er01.chi.ubiquity.io Nobis Technology Group, LLC
Excuse me if I'm being very thick but I remember getting a different result the last time I ran the leaktest, admittedly quite some time ago. Pretty sure the isp(?) had crypostorm in the name...?