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C# - Quickly checking remote IPs for connectivity

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    I'm working on a few projects that look at series of remote IP addresses for certain information (i.e. active processes, hostnames, etc).  Unfortunately, it takes awhile to resolve them.  I'd like to come up with some way to check whether they're connected before telling the program to seek said information, and I'd like to determine this quickly.

    Currently, I'm sending out a ping and skipping a given address if its PingReply comes back as 0ms or it breaks to the catch{}.  Is there a faster way to determine whether or not a given IP address is connected to the network? Thanks.

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