cloudpbx.datium.es has no NS records.
NS records for this zone are defined at datium.es.
NS records for this zone are defined at datium.es.
Question and response
Question
dig cloudpbx.datium.es. NS
Answer
The response has no answer records.
Authority
datium.es. 600 SOA ns1055.ui-dns.org. hostmaster.1und1.com. 2017060363 28800 7200 604800 600
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0