> For the complete documentation index, see [llms.txt](https://ceh-practical.cavementech.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ceh-practical.cavementech.com/module-2.-footprinting-and-reconnaissance/5.-whois-footprinting.md).
# 5. WHOIS Footprinting
whois protocol runs on port 43.Regional internet Registries keep records of all data
WHOIS footprinting provides target domain information such as the owner, its registrar, registration details, name server, contact information, etc. Using this information, you can create a map of the organization’s network, perform social engineering attacks, and obtain internal details of the network.
## 1. WHOIS lookup using domain tools
{% embed url="" %}
In the search bar, search for **[www.certifiedhacker.com](http://www.certifiedhacker.com)**.
This search result reveals the details associated with the URL entered, **[www.certifiedhacker.com](http://www.certifiedhacker.com)**, which includes organizational details such as registration details, name servers, IP address, location, etc.
### Other WHOSI Footprinting tools
{% embed url="" %}
### Best CEH Practical Preparation Course
{% embed url="" %}
