efs2._domainkey.syncedtool.com has no NS records.
NS records for this zone are defined at syncedtool.com.
NS records for this zone are defined at syncedtool.com.
Question and response
Question
dig efs.dkim2.efscloud.net. NS
Answer
The response has no answer records.
Authority
efscloud.net. 900 SOA ns1.efscloud.net. efscloud.net.domainsbyproxy.com. 394 600 300 3600000 900
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0