Hi Joshua,
Yes, to get the IP address of your MailChimp server you can run the following command from your command-line prompt or terminal.
ping us1.api.mailchimp.com
The first 3 characters "us1" should match the last few characters of your API key, everything after the dash. So if your API key ends in "xxxx-us5" then you should enter the following command in your terminal.
ping us5.api.mailchimp.com
The result should read something like this:
ping us11.api.mailchimp.com
PING e9174.x.akamaiedge.net (95.100.134.62): 56 data bytes
64 bytes from 95.100.134.62: icmp_seq=0 ttl=58 time=11.385 ms
The last line states the IP address of your API server.
Hope that helps. If not, let me know!
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