Our free IP WHOIS lookup tool provides instant access to ownership and allocation details for any public IP address. Check the organization and network behind an IP, view carrier/ASN information, and validate geolocation signals in seconds. Whether you’re investigating suspicious activity, troubleshooting connectivity issues, or verifying server locations, this IP WHOIS search gives you the context you need.
IP WHOIS Search
Enter an IP address to retrieve detailed WHOIS information
Geolocation Data
Precise location information with city-level accuracy
Threat Intelligence
Identify potentially malicious IPs with security hazard reports
Network Details
ASN, carrier information, and network infrastructure data
How to use the IP WHOIS lookup
- Enter an IP address (IPv4 or IPv6) in the input box.
- Click Lookup IP.
- Review ownership details, ASN/carrier, and any threat/hazard signals in the results.
- If needed, share the result link with a teammate for quick collaboration.
Examples
- 8.8.8.8 — Identify the organization behind the IP and its network context.
- 1.1.1.1 — Check ASN/carrier info and validate ownership details.
Common Questions About IP WHOIS Lookup
How does an IP WHOIS Lookup tool work?
Think of it like a digital phone book for the internet. When you enter an IP address, our tool queries public WHOIS/RIR databases to gather ownership and network details for that IP block.
How do you use the IP WHOIS Lookup tool to find WHOIS info for an IP address?
Enter an IP address (for example, 8.8.8.8) and click “Lookup IP”. We’ll return the registrar/RIR, organization, ASN, geolocation signals, and related network details.
What is WHOIS?
WHOIS (pronounced “who is”) is a protocol and set of databases that provide registration and allocation information for domains and IP address ranges.
Who is in charge of IP addresses?
IANA coordinates global IP address space and delegates blocks to Regional Internet Registries (RIRs) such as ARIN, RIPE NCC, APNIC, LACNIC, and AFRINIC, which allocate ranges to ISPs and organizations.
What are the objectives (purposes) of an IP WHOIS lookup?
Common uses include troubleshooting routing/network issues, verifying server locations, investigating suspicious traffic, and identifying the organization responsible for an IP range. It’s also useful for investigating suspicious activity (see our IP Blacklist Checker) or verifying reverse DNS (try Reverse DNS Lookup). For DNS debugging, you can also use our DNS Records Checker.
Is IP WHOIS lookup legal?
Yes. WHOIS/RIR allocation data is publicly available and commonly used by network and security teams. Use the information responsibly and for legitimate purposes.