Use APKPure App
Get What is my IP old version APK for Android
좋은 사용자 인터페이스를 사용하여 외부 IP 주소를 가져 오기
"What is my IP" is an Android application that intends to shown you your internal & external IP. It uses ipify.org to get external IP address.
Source is available on github https://github.com/yoavst/whatIsMyIP