What is my ISP?

Your ISP (internet service provider) is the company that connects you to the internet. On Wi-Fi at home, that's your broadband provider. On mobile data, it's your mobile carrier. On a VPN, websites see the VPN company's network instead.

Why doesn't the name match my bill?

The name shown comes from the organization that owns the block of IP addresses you're using. That's often a parent company, a regional subsidiary, or a wholesale network that a smaller brand rents capacity from. So a small provider can show up under a bigger company's name.

What is an ASN?

An autonomous system number (ASN) identifies a network on the internet, such as a provider's whole network. Networks use these numbers to exchange routes with each other. If you're reporting a problem to a website or a network administrator, the ASN tells them exactly which network you're on.

Why does it show a different provider?

If you're connected through a VPN, proxy, or a company network, websites see that network rather than your home provider. Our home page flags connections that look like a VPN or data center, and the WebRTC leak test checks whether your real provider is still exposed.