This simple page displays your local (LAN) and global (WAN) IP address.
It can copy to your clipboard easily and you can add it to your home screen (tools/add to home screen).
$ curl address.center/myip
Additionally, IP location information is also provided (geocodes, country & city location).
1) save your IP addresses for later use (useful for ipv6),
2) auto updateable dynamic IP for your remote machines.