Network ownership guide

ASN, Provider, ISP, and Organization

An ASN, or autonomous system number, identifies a network that announces routes to the global internet. Large access providers, hosting companies, universities, enterprises, governments, and content networks often operate autonomous systems.

Provider, ISP, and organization labels describe the owner or operator associated with an IP range. Depending on the dataset, these fields may point to the same company or show different parts of the chain between a route origin, an access network, and a customer-facing brand.

How to read these fields

The ASN is usually the most stable routing identifier. Provider and organization names are useful for plain-language interpretation, but they can change after mergers, network transfers, or database updates. A hosting company might appear as both provider and organization, while a broadband customer may only show the access ISP.

Common examples

A public DNS resolver may show a well-known technology company. A cloud server may show a cloud platform or data center operator. A residential connection may show a cable, fiber, or mobile carrier. A business VPN may show the VPN provider rather than the employee's physical location.

Why fields may be missing

Some ranges have incomplete ownership data, recently changed routing, or limited public metadata. IP Atlas displays the best available network label and leaves fields blank when a confident value is not available.