Quick answer: Your ISP (Internet Service Provider) is the company that assigns your connection its public IP address, which is why an IP lookup tool typically shows the ISP or organization name alongside the address.
Why the ISP name appears in results
IP address blocks are allocated to organizations, most often ISPs, hosting companies and large businesses. Looking up an address returns the organization the block is currently allocated to, not the individual using it.
ISP is not the same as identity
Seeing an ISP name does not identify a specific person, device, or exact address — it identifies the network operator, which is a separate piece of information from geolocation or ASN.
Run IP Lookup to see your own ISP and network details, or ASN Lookup for the underlying autonomous system.
Want to see this in practice? Check your own connection's IP, location and ISP.
Check my IP address