Logo
Logo

PRODUCTS

TOOLS

pricing background

Free IP WHOIS Lookup

Look up any IPv4 or IPv6 address to retrieve the owner organization, ISP, ASN, CIDR block, abuse contact, and Regional Internet Registry. Live data from ARIN, RIPE NCC, APNIC, LACNIC, and AFRINIC.
1528+
TLDs
693M+
Active Domains
908M+
Domains Tracked
3877M+
WHOIS Records
5290M+
Host Names
16B+
DNS Records

IP WHOIS lookup data for lookup

Try these examples:

Recent IP WHOIS Lookup

For request/response examples, IPv4/IPv6 input formats, and bulk processing details, see the IP WHOIS API documentation.

IP WHOIS FAQs

Common questions about IP ownership, ISP data, IPv6 support, and lookup accuracy.

What is an IP WHOIS lookup?

What information does an IP WHOIS record contain?

How is IP WHOIS different from domain WHOIS?

Can I look up both IPv4 and IPv6 addresses?

Why would I need to look up an IP address?

What is an abuse contact and why does it matter?

What is the difference between IP WHOIS and IP geolocation?

Is IP WHOIS data available in bulk?