Узнаем внешний IP
$ curl wtfismyip.com/json
{
"YourFuckingIPAddress": "1.2.3.4",
"YourFuckingLocation": "Amsterdam, 07, Netherlands",
"YourFuckingHostname": "host.network",
"YourFuckingISP": "DigitalOcean",
"YourFuckingTorExit": "false",
"YourFuckingCountryCode": "NL"
}