nucleo

Go here. This will give you your External IP or WAN IP if you prefer. If you cannot see your webpage make sure that your webserver is not only listening on the localhost (127.0.0.1). Then if you are using a router/firewall you need to set fowarding rules/ firewall rules to let the request reach the computer. If all this fail, you should contact your Internet Service Provider and ask them if they block port 80. If so change the port inside you webserver configuration. To make it easier for everyone to reach your webserver you should create a dynamic dns from one of the several possible solution like dyndns, noip, etc...