Why can’t I connect to the internet? >
AirPort Extreme doesn’t have a built-in broadband modem, which means you’ll need to connect it to a third-party modem by Ethernet cable to get online. If AirPort Extreme is working properly – or you’re using a third-party broadband router for both Wi-Fi and internet – open your web browser and enter the router’s IP address and sign in to its admin tool using either the settings supplied by the manufacturer or your ISP. In most cases, restarting or resetting the modem should fix the problem. It’s also worth checking the hardware has the latest firmware installed. If you’re still having problems, your ISP’s service may be down. Go to the relevant support page on the ISP’s website on a device with mobile internet access, such as your iPhone, or call your ISP.