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How to find your public IP address from command-line?

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ip a command will conveniently show the addresses assigned to your network interfaces, but oftentimes this is not what the internet sees your machine as.

So how to find your public IP address from command-line?

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3 answers

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There are probably myriad services for echoing your IP back over HTTP. Here are a couple:

curl https://api.ipify.org
curl https://ip.me
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In case Ipify stops being free: https://dnsleaktest.com/ will show you your IP. I don't know if they have an API, but it's easy to parse the HTML:

https dnsleaktest.com | rg '\d+\.\d+\.\d+\.\d+' --only-matching

(the commands are https://httpie.io/ and https://github.com/BurntSushi/ripgrep)

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Cisco's OpenDNS (nothing to do with open source) has this magic domain myip.opendns.com which resolves to your own public IP address when looked up with standard DNS tools.

For example with dog (or dig):

$ dog +short myip.opendns.com @resolver1.opendns.com
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