119.1.52.154.in-addr.arpa.
Question and response
Question
dig smtp.fphpages.com. PTR
Answer
smtp.fphpages.com. 300 PTR 119.1.52.154.in-addr.arpa.
Authority
fphpages.com. 172800 NS ns-125.awsdns-15.com.
fphpages.com. 172800 NS ns-1282.awsdns-32.org.
fphpages.com. 172800 NS ns-1820.awsdns-35.co.uk.
fphpages.com. 172800 NS ns-966.awsdns-56.net.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0