What is my ISP?

The provider shown is the network that announces your address to the rest of the internet right now. If you are on a VPN it will be the VPN's hosting provider — which is itself a quick way to confirm a VPN is active.

The operator's name as registered with the regional internet registry, which may be the parent company rather than the brand you pay (for example a cable brand owned by a telecom group). The organization field shows the holder of the specific address block when it differs.

The autonomous system number, written AS plus a number, that announces your address in BGP. Every provider of any size has one or more; it is the most reliable identifier of a network because it comes from the routing table itself. We cross-check it against iptoasn.com, DB-IP, Team Cymru and RIPEstat.

Derived from the network's type and the published range lists: a consumer broadband network is residential, a mobile carrier mobile, a corporate network business, a cloud or hosting range data center. Websites use the same classification to decide how much to trust a visitor.

Mergers, wholesale and resale: the company on your bill may rent its network from another operator, or trade under a brand that the registry does not know. Mobile virtual operators (MVNOs) show the host carrier's name. A VPN shows the VPN's hosting provider. None of these is an error in the lookup.

Enter any IPv4 or IPv6 address to see its provider, ASN and connection type — useful for checking where an email, a login or a server really comes from. The ASN lookup shows all prefixes of the same provider.

Three names that often, but not always, point to the same company. The ISP is the network operator announcing the address (from BGP). The ASN is that operator's number; one company can own several (one per country or per acquisition). The organization is the registered holder of the address block in the registry's records, which can be a customer of the ISP — a university or a corporation with its own block — or the ISP itself. When all three agree you are on a plain consumer connection; when they differ, the organization is usually the more specific answer.

Your provider sees every connection you make: the addresses and domains of the servers, timings and data volumes, and — unless you use encrypted DNS or a VPN — every domain name you look up. It does not see the content of HTTPS pages, your passwords or your messages inside encrypted apps. Encrypted DNS hides the domain lookups; a VPN hides everything except the fact that you use a VPN and how much data flows, and moves the same visibility to the VPN provider. The DNS leak test shows whether your provider still sees your lookups.