mx.fakturaelektroniczna.com has no NS records.
NS records for this zone are defined at fakturaelektroniczna.com.
NS records for this zone are defined at fakturaelektroniczna.com.
Question and response
Question
dig mx.fakturaelektroniczna.com. NS
Answer
The response has no answer records.
Authority
fakturaelektroniczna.com. 1800 SOA ivy.ns.cloudflare.com. dns.cloudflare.com. 2395763600 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0