What Is My ISP? Find Your Internet Provider
This page shows the internet provider (ISP) for the connection you are on now, with its ASN and approximate location. Enter any other IP below to check its ISP.
Registered Network Provider
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. How to tell if you are behind CGNAT compares the router WAN address with the public IP.
This page is the quick check for the connection you are on. How to find out your ISP walks through the same question, including when a VPN shows a different provider. If you already have an address from a log or ticket, find the ISP by IP address instead of relying on the current-connection result.
On a phone, Wi-Fi and mobile data usually give different answers — find your ISP on your phone covers iPhone and Android. The ASN shown with the provider is explained in what an ASN is.
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 an IP database (GeoJS) built from registration and routing 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.