Who is my Email Hosting Company?

I am trying to audit a domain for a customer who has no idea where they are hosting their email, and therefore how to add additional email addresses.

NSLOOKUP returns 119.148.73.152 sfac02.wysweb.com.au

How do I find this info out?
LVL 6
FlippAsked:
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OP_ZaharinConnect With a Mentor Commented:
you can use several domain lookup for information:
- http://www.who.is
and http://programmer.lt/en/whois/?q=119.148.73.152 returns the following info:

Site server IP:      119.148.73.152 (sfac02.wysweb.com.au)  
Additional server information:      GeoIP RBL
inetnum:        119.148.64.0 - 119.148.95.255
netname:        HOSTNETWORKS
descr:          Host Networks,
descr:          Web Hosting, Dedicated Servers, Co-location,
descr:          Brisbane, Queensland, Australia
country:        AU
admin-c:        JD86-AP
tech-c:         JD86-AP
status:         ALLOCATED PORTABLE
mnt-by:         APNIC-HM
mnt-lower:      MAINT-AU-HOSTNETWORKS
mnt-routes:     MAINT-AU-HOSTNETWORKS
mnt-irt:        IRT-HOSTNETWORKS-AU
remarks:        -+-+-+-+-+-+-+-+-+-+-+-++-+-+-+-+-+-+-+-+-+-+-+-+-+-+
remarks:        This object can only be updated by APNIC hostmasters.
remarks:        To update this object, please contact APNIC
remarks:        hostmasters and include your organisation's account
remarks:        name in the subject line.
remarks:        -+-+-+-+-+-+-+-+-+-+-+-++-+-+-+-+-+-+-+-+-+-+-+-+-+-+
changed:        hm-changed@apnic.net 20110209
source:         APNIC
person:         Jeff Dykstra
nic-hdl:        JD86-AP
e-mail:         info@hostnetworks.com.au
address:        1/53 Brandl Street
address:        Eight Mile Plains
address:        QLD 4114
phone:          +61-7-3118-5449
fax-no:         +61-7-3319-6888
country:        AU
changed:        info@hostnetworks.com.au 20040216
mnt-by:         MAINT-NEW
source:         APNIC

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OP_ZaharinConnect With a Mentor Commented:
- likely the hosting is : http://hostnetworks.com.au/ 
- and you can contact the following person to get confirmation:
person:         Jeff Dykstra
e-mail:         info@hostnetworks.com.au
address:        1/53 Brandl Street
address:        Eight Mile Plains
address:        QLD 4114
phone:          +61-7-3118-5449
fax-no:         +61-7-3319-6888
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NivleshConnect With a Mentor Commented:
when you did a nslookup, did you look for the mx entry? this is the where the emails are sent when someone emails that customer.

nslookup -type=mx {domain name}

then you will need to do a whois lookup for the result that you get in above.
I use http://whois.domaintools.com   There you will find the registrars details. You can then call them up. Normally you will need to authenticate yourself to them to add/delete accounts. Be ready with the customers details etc

Alternatively, you can ask the customer for any bills they might have received for domain/email charges. The bill will contain the customers client details and would be a vital help.

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DarinTCHSenior CyberSecurity EngineerCommented:
If the company has not setup a full exchange or email domain address for you....you can often check the outlook properties to see what your smtp address is..... Also check with accounting....who are we paying
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FlippAuthor Commented:
Thank you all - as my client was unable to locate any billing for Hosting and as it turns out the information above led me to the Hosting Company, but were unable to disclose any information to me as they worked through a third-party vendor.

Confused? Me too :)
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NivleshCommented:
yea that normally happens. Domain entry modifications are guarded very closely
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