Penetration Testing with Kali Linux OffSec

whois megacorpone.com -h 192.168.50.251
Domain Name: MEGACORPONE.COM 
Registry Domain ID: 1775445745_DOMAIN_COM-VRSN 
Registrar WHOIS Server: whois.gandi.net 
Registrar URL: http://www.gandi.net 
Updated Date: 2019-01-01T09:45:03Z 
Creation Date: 2013-01-22T23:01:00Z 
Registry Expiry Date: 2023-01-22T23:01:00Z 
... 
Registry Registrant ID:
Registrant Name: Alan Grofield
Registrant Organization: MegaCorpOne 
Registrant Street: 2 Old Mill St 
Registrant City: Rachel 
Registrant State/Province: Nevada 
Registrant Postal Code: 89001 
Registrant Country: US 
Registrant Phone: [phone] 
... 
Registry Admin ID:
Admin Name: Alan Grofield
Admin Organization: MegaCorpOne 
Admin Street: 2 Old Mill St 
Admin City: Rachel 
Admin State/Province: Nevada 
Admin Postal Code: 89001 
Admin Country: US 
Admin Phone: [phone] 
... 
Registry Tech ID:
211
(OffSec, 2023), https://www.megacorpone.com/ 
212
(Wikipedia, 2022), https://en.wikipedia.org/wiki/WHOIS 
213
(Wikipedia, 2022), https://en.wikipedia.org/wiki/Name_server 
214
(Wikipedia, 2022), https://en.wikipedia.org/wiki/Domain_name_registrar 

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Penetration Testing with Kali Linux
PWK - Copyright © 2023 OffSec Services Limited. All rights reserved. 
115 
Tech Name: Alan Grofield
Tech Organization: MegaCorpOne 
Tech Street: 2 Old Mill St 
Tech City: Rachel 
Tech State/Province: Nevada 
Tech Postal Code: 89001 
Tech Country: US 
Tech Phone: [phone] 
... 
Name Server: NS1.MEGACORPONE.COM
Name Server: NS2.MEGACORPONE.COM
Name Server: NS3.MEGACORPONE.COM
... 
Listing 35 - Using whois on megacorpone.com 
Not all of this data is useful, but we did discover some valuable information. First, the output 
reveals that Alan Grofield registered the domain name. According to the Megacorp One Contact 
page, Alan is the “IT and Security Director”. 
We also found the name servers for MegaCorp One. Name servers are a component of DNS that 
we won’t be examining now, but we should nevertheless add these servers to our notes. 
Assuming we have an IP address, we can also use the whois client to perform a reverse lookup 
and gather more information. 
kali@kali:~$