Fail to resolve host with TTL 0

Unbound
1

Hello,

# dig gc-tinnen.internetcube.net. A
... timeout

# dig @85.214.85.64 gc-tinnen.internetcube.net. A
...
;; ANSWER SECTION:
gc-tinnen.internetcube.net. 0 IN A 89.244.98.68
...

May the TTL 0 the reason?

Andreas