mta005.uk.t1cloud.com has no NS records.
NS records for this zone are defined at uk.t1cloud.com.
NS records for this zone are defined at uk.t1cloud.com.
Question and response
Question
dig mta005.uk.t1cloud.com. NS
Answer
The response has no answer records.
Authority
uk.t1cloud.com. 900 SOA ns-1613.awsdns-09.co.uk. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 300
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0