mailer.telia.lt has no NS records.
NS records for this zone are defined at telia.lt.
NS records for this zone are defined at telia.lt.
Question and response
Question
dig mailer.telia.lt. NS
Answer
The response has no answer records.
Authority
telia.lt. 1800 SOA cash.ns.cloudflare.com. dns.cloudflare.com. 2398576567 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0