mail.worldwideweddingservices.com has no NS records.
NS records for this zone are defined at worldwideweddingservices.com.
NS records for this zone are defined at worldwideweddingservices.com.
Question and response
Question
dig mail.worldwideweddingservices.com. NS
Answer
The response has no answer records.
Authority
worldwideweddingservices.com. 3601 SOA dns1.registrar-servers.com. hostmaster.registrar-servers.com. 1771332424 43200 3600 604800 3601
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0