echo.mxrouting.net has no NS records.
NS records for this zone are defined at mxrouting.net.
NS records for this zone are defined at mxrouting.net.
Question and response
Question
dig echo.mxrouting.net. NS
Answer
The response has no answer records.
Authority
mxrouting.net. 3600 SOA ns21.cloudns.net. support.cloudns.net. 2026012302 7200 1800 1209600 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0