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The best troubleshooting tool is a traceroute to see where traffic is getting stuck.

1. Using a Traceroute

Use ICMP-based traceroute in one of these ways:
Issue 'tracert' from a Windows host
Issue 'traceroute -I' from a Linux host
Issue 'traceroute -P icmp' from a BSD or Mac host

You can also issue 'telnet' to check what IP address your request is being sent from. This can diagnose firewall/proxy issues.

2. Contacting Support

If a traceroute doesn't help you solve the problem, please send the following information to Support: