A toy DNS resolver built while following the instruction of this guide.
Warning
This is a toy resolver and should not be used in any official capacity.
Usage:
dns-resolver <url>
The following shows the output when we attempt to resolve the IP address of www.twitter.com.
Querying 198.41.0.4 for www.twitter.com
Querying 192.12.94.30 for www.twitter.com
Querying 192.12.94.30 for a.r06.twtrdns.net
Querying 192.12.94.30 for ns-370.awsdns-46.com
Querying 205.251.192.47 for ns-370.awsdns-46.com
Querying 205.251.193.114 for a.r06.twtrdns.net
Querying 205.251.192.179 for www.twitter.com
NAME TTL CLASS TYPE DATA
www.twitter.com 600 IN CNAME twitter.com
twitter.com 1800 IN A 104.244.42.193