What is my ISP?
Your Internet Service Provider is the company that connects you to the internet. We estimate it from reverse Domain Name System and network clues tied to your public Internet Protocol address.
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Internet provider
How ISP detection works
We estimate your internet provider from reverse DNS and organization/ASN-style hints tied to your public IP. The label may match the retail brand on your bill, or it may show an upstream carrier, mobile core, or hosting network that owns the address block.
VPN and proxy exits will report the exit provider, not your home ISP.
Using ISP results
Useful for confirming you left a VPN, comparing networks while traveling, or giving support a network name. Pair it with the IP and location tools for fuller context, and remember names are estimates from public network data.
Learn more
See ASN and the guide understanding ASN and ISP.
Get your related information
Frequently Asked Questions
What is an ISP?
An ISP (Internet Service Provider) is the company that connects you to the internet—cable, fiber, DSL, or mobile. We estimate yours from network clues tied to your public IP.
Why might the ISP name look unfamiliar?
Reverse DNS often shows the upstream carrier or hosting network, not the consumer brand you pay. Mobile and business networks can also share larger provider ranges.
How do we detect your ISP?
We use clues tied to your public IP, such as reverse DNS and organization hints from network data (including ASN-related context when available). It is an estimate.
Why does a VPN change my ISP?
When you use a VPN, websites see the VPN provider’s exit IP. The ISP shown then reflects that VPN network, not the company that sells you home internet.
Can my ISP see which sites I visit?
Your ISP can see connection metadata for traffic that leaves their network. HTTPS encrypts page contents, but DNS and destination IPs may still be visible unless you use additional privacy tools.