dns name resolution quastion

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hello guys

the wanted website here itfreetraining.com

well learning more types of queries , don't understand our dns sent iterative querie root dns server .com dns server , .com dns didn't find website address had ip address authoritive dns servers of itfreetraining.com , happened our dns server requested answer authoritative servers , got . don't how possible .com server not have ip address of website directly instead authority dns servers of website ? .com servers authoritative administrator himself decided put dns servers address instead of website address , why not directly website ?

thanks


hi,

according research, design behaviour , there no mircosoft offical documents explain it.

based understanding, if records stored in .com or root hints' server, server overload.

so .com had authoritive dns servers'  ip of second domain name reduce server load.

more information about  iterative queries , please refer following article:
https://technet.microsoft.com/en-us/library/cc961401.aspx

best regards,

frank

please remember mark replies answers if , unmark them if provide no help.
if have feedback technet subscriber support, contact tnmff@microsoft.com.



Windows Server  >  IPAM, DHCP, DNS



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