With the results displayed in your web browser. Whois is simply a plain text protocol that returns information from a database of Internet resources.
It can reveal the owner or registered user of a resource; that may be a domain name, an IP address block or an autonomous system number ASN. Information returned includes physical addresses, email addresses of system staff, names and phone numbers.
- louisa county virginia real estate records?
- death certificate norrine l kowall?
- Generic instructions for updating the settings yourself;
- mothers maiden name on birth certificate?
The DNS name servers of a domain are also displayed. Many domain registration services allow a private listing in which the details of the domain owner can be hidden, these became popular following the prevalence of spam being directed at domain owners. The Finger protocol allowed you to "finger" a remote host and the response from the plaintext protocol would reveal who was actually logged on to the system and how long they had been logged on.
Example Uses of the Linux Host Command
Whois is still a simple plaintext protocol that has a server component that listens on TCP port Clients establish a connection to this port and transmit a text record with the domain or IP address that is to be queried against the Whois database. Since the protocol is so simple a telnet client can be used to query the whois service. With whois being a simple plain text protocol it is possible to use a standard telnet or netcat client to access whois data. We can see that by simply entering the domain we were able to get a response from the iana.
The important information contained in this response is a pointer to the whois server we need to talk to get more information about our domain. Now we have more information, including the DNS servers for the domain, the creation date and the registry expiry date.
From this information the incident responder can contact the owner of the netblock in order to alert the provider to the presence of malicious traffic. Historical Whois records are also available that allow a responder to search for details in the whois data that may be present across multiple investigations or targets. For example you can search whois data to find an email address across multiple domains and determine when the email address first appeared in a whois record. It provides a way of keeping track of domain names. There are a number of results returned but they all contain the same fields which are as follows:.
In general, you will probably only need to use the host command to return either the IP address for a domain name or the domain name for an IP address. Share Pin Email. Updated October 29, The following results will be displayed:.
Find Website IP Address, Get Site IP | IPVoid
INT reverse lookup. To return the IP address for a domain name, simply type the following command:. For example, to find the domain name for linux. The results from the host command will be as follows:. You can do this by typing the following into a terminal window:.
The results are as follows:. You can find the SOA details for a domain by typing the following command:.