Re: Ping domain name vs nslookup IP

On Sep 23, 3:31 am, SL Da <sb5...@xxxxxxxxx> 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 ?

Thanks.

When you ping bayregatta.com your get an A record back. A record
contains 209.160.33.87
When you do nslookup 209.160.33.87 you perform something like reverse
lookup for domain 209.160.33.87. There are no such domain and there
are no ptr record for this ip.
PTR records looks like this 209-160-33-87.your-isp.com and commonly
maintained by isp`s.
You do not need any ptr records for the website. But you have
mail.bayregatta.com at same ip without ptr records. You must have one
ptr for your mail server, otherwise your mail server ip can be
blacklisted.
Try to use some swiches such as nslookup -type=ptr(ns,soa,mx)
209.160.33.87. You can also find your full DNS report at
http://www.magic-net.nl/dns-lookup.php or check your PTR direct
http://www.magic-net.nl/dns-and-ip-tools.php?ptr=209.160.33.87&do=Find


.

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