ismtp.clearfly.io has no NS records.
NS records for this zone are defined at clearfly.io.
NS records for this zone are defined at clearfly.io.
Question and response
Question
dig ismtp.clearfly.io. NS
Answer
The response has no answer records.
Authority
clearfly.io. 3600 SOA ns1.as72400.net. sysops.as27400.net. 2026020201 10800 900 1814400 7200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0