ISP, ASN and network ownership
How to Find the ISP or Organization Behind an IP Address
How to find the ISP or organisation behind an IP address, where that data comes from, and why it matters when you triage traffic or a security alert.
- Author
- Mojahid Ul Haque
- Updated
- Reading time
- 2 min read
What ISP lookup reveals
ISP lookup identifies the provider or organization associated with an IP range. It can show a broadband carrier, mobile network, university, company, or hosting provider.
This context helps explain whether traffic looks like a normal home user, business connection, cloud server, or automated system.
Why organization data matters
A login from a known home ISP may carry different risk than a login from a cloud data center. A signup from an anonymizing network may need extra verification.
Organization data also helps developers debug webhook sources, API clients, and server-to-server traffic.
How to check an IP owner
Run the address through Crafzo IP Lookup and review the location and risk panels. The ISP or network context can guide next steps.
For legal ownership or abuse reporting, you may also need WHOIS records from the relevant regional internet registry.
Frequently asked questions
Keep reading
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