Tips & tricks : Detect your public IP using telnet
If you need to identify your public IP and have no possibility to run web browser of any kind you can use telnet.
In order to identify public IPv4:
In order to identify public IPv6:
Once connection is established autoresponder will show your public IP address:
This is the telnet autoresponder at v6address.com. You have connected over IPv4. Your IP address is 126.96.36.199
This might be helpful when using console on some *NIX systems or on the routers.