liujo.emailofficer.com has no NS records.
NS records for this zone are defined at emailofficer.com.
NS records for this zone are defined at emailofficer.com.
Question and response
Question
dig liujo.emailofficer.com. NS
Answer
The response has no answer records.
Authority
emailofficer.com. 3601 SOA dns1.registrar-servers.com. hostmaster.registrar-servers.com. 1774039744 43200 3600 604800 3601
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0