Question and response
Question
dig exchange.cdg.ws. PTR
Answer
The response has no answer records.
Authority
cdg.ws. 86400 SOA xbru.br.ns.els-gms.att.net. rm-hostmaster.ems.att.com. 253 86400 10000 604800 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0