Passive information gathering

I'm using two online services at http://www.intodns.com/ and http://hexillion.com/

what we get ?

for example :

from is2c-dojo.com

Nameserver records returned by the parent servers are:

ns1.partnerit.us.   [] (NO GLUE)   [TTL=172800]
ns2.partnerit.us.   [] (NO GLUE)   [TTL=172800]

Domain Name: IS2C-DOJO.COM
   Registrar: CV. JOGJACAMP
   Whois Server: whois.resellercamp.com
   Referral URL: http://www.resellercamp.com
   Name Server: NS1.PARTNERIT.US
   Name Server: NS2.PARTNERIT.US
   Status: clientTransferProhibited
   Updated Date: 14-jan-2013
   Creation Date: 14-jan-2012
   Expiration Date: 14-jan-2014

from spentera.com

Nameserver records returned by the parent servers are:

dina.ns.cloudflare.com.   ['173.245.58.107']   [TTL=172800]
art.ns.cloudflare.com.   ['173.245.59.102']   [TTL=172800]

Domain Name: SPENTERA.COM
   Registrar: ENOM, INC.
   Whois Server: whois.enom.com
   Referral URL: http://www.enom.com
   Name Server: ART.NS.CLOUDFLARE.COM
   Name Server: DINA.NS.CLOUDFLARE.COM
   Status: ok
   Updated Date: 24-jul-2013
   Creation Date: 15-feb-2011
   Expiration Date: 15-feb-2016

DNS records
DNS query for 108.117.101.141.in-addr.arpa returned an error from the server: NameError
name  class  type  data  time to live
  spentera.com  IN  A  141.101.117.108  300s  (00:05:00)
  spentera.com  IN  A  141.101.116.108  300s  (00:05:00)
  spentera.com  IN  MX
  preference:  10
  exchange:  aspmx2.googlemail.com
  300s  (00:05:00)
  spentera.com  IN  MX
  preference:  5
  exchange:  alt2.aspmx.l.google.com
  300s  (00:05:00)
  spentera.com  IN  MX
  preference:  1
  exchange:  aspmx.l.google.com
  300s  (00:05:00)
  spentera.com  IN  MX
  preference:  10
  exchange:  aspmx3.googlemail.com
  300s  (00:05:00)
  spentera.com  IN  MX
  preference:  5
  exchange:  alt1.aspmx.l.google.com
  300s  (00:05:00)
  spentera.com  IN  NS  art.ns.cloudflare.com  86400s  (1.00:00:00)
  spentera.com  IN  NS  dina.ns.cloudflare.com  86400s  (1.00:00:00)
  spentera.com  IN  SOA
  server:  art.ns.cloudflare.com
  email:  dns@cloudflare.com
  serial:  2013080702
  refresh:  10000
  retry:  2400
  expire:  604800
  minimum ttl:  3600