Question and response
Question
dig server-54-192-97-72.dus51.r.cloudfront.net. A
Answer
server-54-192-97-72.dus51.r.cloudfront.net. 86413 A 54.192.97.72
Authority
r.cloudfront.net. 172800 NS ns-1204.awsdns-22.org.
r.cloudfront.net. 172800 NS ns-1622.awsdns-10.co.uk.
r.cloudfront.net. 172800 NS ns-279.awsdns-34.com.
r.cloudfront.net. 172800 NS ns-954.awsdns-55.net.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0