Re: Ping domain name vs nslookup IP

SL Da wrote:
1. When I ping 'bayregatta.com' I see 209.160.33.87

2. When I try 'nslookup 209.160.33.87', I get 'non-existent domain'.

I am a bit confused. Can someone explain ?

1. Assuming the ping looked up bayregatta.com via DNS, that's a DNS A record lookup.

2. Since that is going to use the defined DNS, it's trying to find the PTR record associated by the IP. Specifically it is trying to lookup
87.33.160.209.in-addr.arpa. But apparently there is no zone for the PTR record, thus the message.
.

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