ran-mail-ext.ran1.osl.basefarm.net has no NS records.
NS records for this zone are defined at ran1.osl.basefarm.net.
NS records for this zone are defined at ran1.osl.basefarm.net.
Question and response
Question
dig ran-mail-ext.ran1.osl.basefarm.net. NS
Answer
The response has no answer records.
Authority
ran1.osl.basefarm.net. 10 SOA ns01.osl.basefarm.net. support.basefarm.com. 187 3600 600 1209600 10
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0