dns5.mediabeam.com.
Question and response
Question
dig 37.sub32.151.207.2.in-addr.arpa. PTR
Answer
37.sub32.151.207.2.in-addr.arpa. 86400 PTR dns5.mediabeam.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1460, xrcode 0, version 0, flags 0