dns.ecod.pl has no NS records.
NS records for this zone are defined at ecod.pl.
NS records for this zone are defined at ecod.pl.
Question and response
Question
dig dns.ecod.pl. NS
Answer
The response has no answer records.
Authority
ecod.pl. 1800 SOA jeff.ns.cloudflare.com. dns.cloudflare.com. 2395311519 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0