ns4.erado.net has no NS records.
NS records for this zone are defined at erado.net.
NS records for this zone are defined at erado.net.
Question and response
Question
dig ns4.erado.net. NS
Answer
The response has no answer records.
Authority
erado.net. 2560 SOA ns1.erado.net. dnssupport.erado.com. 1773082921 16384 2048 1048576 2560
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0