Are they taking the piss by hiring and firing the same number as their public DNS IP ?
Their main DNS is 1.1.1.1 but their secondary is 1.0.0.1 not 1.1.0.0, so close but not quite.
alt Hacker News
Their main DNS is 1.1.1.1 but their secondary is 1.0.0.1 not 1.1.0.0, so close but not quite.