WHOIS Lookup Tool
Query Domain Registration Information
The WHOIS lookup tool allows you to query public databases to obtain domain name registration information. This includes details about the domain owner, registrar, registration and expiration dates, and name servers. It's an essential utility for anyone involved with domain management, cybersecurity, or web development.
Retrieve IP Address Registration Details
Beyond domain names, the WHOIS protocol can also be used to retrieve registration details for IP addresses. This can provide information about the organization or entity that owns a specific IP address block, which is useful for network troubleshooting and security analysis.
Advanced WHOIS Query Options
Our WHOIS tool supports various command-line options for more
specific queries. You can specify a particular WHOIS server to query
using the -h flag, which is useful when the default
server doesn't have the required information. For non-standard WHOIS
ports, the -p flag can be used.
Understanding WHOIS Output
The output of a WHOIS query can sometimes be dense. The
-H flag can be used to format the output to be more
human-readable by removing header and footer lines. For
comprehensive usage instructions and a list of all available
options, you can always refer to the help documentation by running
whois --help or whois -h.
Example Commands:
# Check domain registration information
whois example.com
# Retrieve registration details of an IP address
whois 192.0.2.1
# Query a specific WHOIS server for domain information
whois -h whois.nic.xyz example.xyz
# Display command usage information in case of errors or unsure use
whois -h
# Use specific WHOIS server on a non-standard port
whois -h whois.example.com -p 43 example.com
# Format output to be more readable by human
whois -H example.com
# Display help and additional options
whois --help