DEKSI Network Monitor 

DEKSI Network Monitor is an advanced, powerful, and feature rich tool that monitors servers located on your LAN, WAN, and the Internet. Windows 9X, NT, 2000, XP, 2003 Server compatible and can monitor the servers with any operating system.
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Iban 

- Want to know who is or owns an ip address or domain? - Search worldwide for interesting domains. - Hear when a line breaks down/is up. - Know why you can not reach a domain. - Solve internet problems from your desk. - New: Reports printable
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OstroSoft ICMP Component 

COM library for Visual Basic 6, allowing to create custom ping and traceroute implementations.
icmp ping traceroute vb com dll