193.123.84.230.
Question and response
Question
dig mta19.bayt.com. PTR
Answer
mta19.bayt.com. 300 PTR 193.123.84.230.
Authority
bayt.com. 3600 NS ns-1340.awsdns-39.org.
bayt.com. 3600 NS ns-1584.awsdns-06.co.uk.
bayt.com. 3600 NS ns-503.awsdns-62.com.
bayt.com. 3600 NS ns-804.awsdns-36.net.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0