IP WHOIS Lookup
See who owns an IPv4 or IPv6 address: the network, organization, range and abuse contact.
Continue your work
- ASN WHOIS Lookup — Look up the network’s autonomous system.
- Reverse IP Lookup — Find the hostname for the IP address.
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Clear instructions
Find steps, examples and limitations below.
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How to use the IP WHOIS Lookup
See who owns an IPv4 or IPv6 address: the network, organization, range and abuse contact.
- 1 Enter an IPv4 or IPv6 address.
- 2 Click WHOIS lookup. The request is routed to ARIN, RIPE NCC, APNIC, LACNIC or AFRINIC automatically.
- 3 Read the network owner, range and abuse contact, and the contacts and remarks below.
Example and practical tips
If an IP address keeps attacking your login page, its WHOIS record shows the hosting company and an abuse email address you can report it to.
Frequently asked questions
What is RDAP?
The Registration Data Access Protocol is the modern, structured replacement for WHOIS used by all five regional internet registries.
Why is the owner a hosting company?
Addresses belong to the network that runs them. A website on a cloud server shows the cloud provider, not the site owner.
Report an issue
Something broken or not quite right? Tell us and we will look into it.