topcities.mm-health.com has no NS records.
NS records for this zone are defined at mm-health.com.
NS records for this zone are defined at mm-health.com.
Question and response
Question
dig topcities.mm-health.com. NS
Answer
The response has no answer records.
Authority
mm-health.com. 3601 SOA dns1.registrar-servers.com. hostmaster.registrar-servers.com. 1774604091 43200 3600 604800 3601
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0