mail.ticklink.com has no NS records.
NS records for this zone are defined at ticklink.com.
NS records for this zone are defined at ticklink.com.
Question and response
Question
dig mail.ticklink.com. NS
Answer
The response has no answer records.
Authority
ticklink.com. 600 SOA dns21.hichina.com. hostmaster.hichina.com. 2026011209 3600 1200 86400 600
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0