eToolz is a portable set of useful networking tools.

This handy application will provide you with essential tools like DNS-Lookup, Ping, TraceRoute, and Whois as well as also allowing you to check e-mail addresses and shows domain information entries.

eToolz Features:

The most important DNS entries can be shown (A, PTR, NS, MX, TXT and SOA)
Automatic or manual query for Whois server including automatic redirection
Mail addresses can be checked for validity
Mail headers can be broken down, and the received lines can be checked for plausibility
Query and update the system time using various time servers
Query the external IP address and the external hostname through Web services
Display the installed and available network adapters and their corresponding IPv4 statistics
Display the HTTP headers for a URL
eToolz supports internationalized domain names

Similar:
How to Improve Your Wireless Network Performance
Hide or Block Neighbor's Wi-Fi Networks on Windows
How to See Your Network Adapter Speed in Windows 10
How to Reset Network Settings in Windows 10
How-To Reset TCP/IP or Internet Protocol
How-To Flush the Windows DNS Cache
How-To Reset Winsock on Windows 10\8\7