What Is My ISP?
See your internet service provider instantly from your public IP address. Look up any IP to find its registered ISP and network details.
About ISP Lookup
Your Internet Service Provider is the company that routes your connection to the internet. This tool uses your public IP address to show the provider registered for that network range. Results are based on public IP databases and may reflect a VPN, mobile carrier, or office network instead of your home broadband provider.
The provider label does not reveal a browsing log. Read what your ISP can see to distinguish HTTPS, DNS and VPN visibility.
Wondering why a public IP can be shared? CGNAT is a separate question from the registered network name.
Frequently Asked Questions
What is my ISP?
Your ISP (Internet Service Provider) is the company that gives you access to the internet — for example Comcast, AT&T, Vodafone, or Swisscom. This page reads your public IP address and shows which provider is registered for that address.
How do you know my ISP?
When you visit this page, we detect your public IP address and look it up in public IP registration data. That data links IP ranges to the organization that operates them, which is usually your ISP or the network you are connected through.
Does a VPN change my ISP?
A VPN does not change your real home ISP, but it can change the provider shown here. Your traffic exits through the VPN server, so the lookup reflects the VPN company or datacenter instead of your residential provider.
What is the difference between ISP and organization?
ISP usually means the brand you pay for internet service. Organization is the registered network owner in IP databases — often the same company, but sometimes a parent company, hosting provider, or mobile carrier backend.