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Who.is
who.is
WHOIS Search, Domain Name, Website, and IP Tools - Who.is
Search WHOIS, RDAP, DNS, and nameserver information for any domain name ... Instantly look up registration data, contact details, nameservers, DNS records, and more for any domain name or IP address using WHOIS and RDAP protocols.
DNS
Look up DNS records including A, AAAA, MX, NS, SOA, and CNAME records for any domain.
WHOIS
Look up WHOIS registration details, contacts, ownership, and nameservers for any domain name.
Website Monitoring
Find information on any domain name or website. Large database of whois information, RDAP, DNS, domain names, name servers, IPs, and tools for searching and monitoring domain names.
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Whois.com
whois.com › whois
Free Whois Lookup - Whois IP Search & Whois Domain Lookup | Whois.com
Whois Domain Name & IP lookup service to search the whois database for verified registration information
People also ask

How do I run a WHOIS search?
To run an Internet WHOIS lookup for IP addresses, enter the IP address into the space above. Click Lookup and the tool will run a WHOIS search for the IP. You'll receive ARIN WHOIS data as well as information on your Internet service provider and the owner of the address.
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whatismyip.com
whatismyip.com › ip-whois-lookup
IP WHOIS Lookup - Lookup IP WHOIS Information - WhatIsMyIP.com®
What does WHOIS stand for?
WHOIS does not stand for anything; rather, it's meant to be read as “who is.” The phrase is capitalized because it is a query and response protocol. It is used for querying databases that contain the registered users of IP addresses when in the context of the WHOIS IP address lookup. The WHOIS protocol is also used to query other types of databases that contain similar information regarding domain names.
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whatismyip.com
whatismyip.com › ip-whois-lookup
IP WHOIS Lookup - Lookup IP WHOIS Information - WhatIsMyIP.com®
What are the Regional Internet Registries?
The Regional Internet Registries, or RIRs, are organizations that manage the allocation and registration of Internet number resources, such as IP addresses. They are divided across the world, with each registry providing coverage to a different region.
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whatismyip.com
whatismyip.com › ip-whois-lookup
IP WHOIS Lookup - Lookup IP WHOIS Information - WhatIsMyIP.com®
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DomainTools
whois.domaintools.com
Whois Lookup, Domain Availability & IP Search - DomainTools
Research domain ownership with Whois Lookup: Get ownership info, IP address history, rank, traffic, SEO & more. Find available domains & domains for sale.
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WhatIsMyIP.com®
whatismyip.com › ip-whois-lookup
IP WHOIS Lookup - Lookup IP WHOIS Information - WhatIsMyIP.com®
Use the IP WHOIS lookup tool to find the assigned owner, location, and abuse-reporting details of an IP address.
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Pentest-Tools
pentest-tools.com › home › whois lookup
Whois IP Lookup – free online whois tool - Pentest-Tools.com
Use our free Whois IP address tool to find detailed information about a domain name or IP address in one click. Retrieves contact details, name servers & more!
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ICANN
lookup.icann.org
ICANN Lookup
The ICANN registration data lookup tool gives you the ability to look up the current registration data for domain names and Internet number resources.
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DNS Checker
dnschecker.org › ip-whois-lookup.php
IP WHOIS Lookup - Instantly Fetch the WHOIS Info of an IP
IP WHOIS Lookup tool instantly fetches the WHOIS info of provided IP. Enter an IP address and find which organization or individual owns a particular IP address.
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DNSlytics
dnslytics.com
Online investigation tool - Reverse IP, NS, MX, WHOIS and Search Tools
DNSlytics provides the ultimate online investigation tool. See detailed information about every IP address, domain name and provider. Perform network tests like DNS lookup, email testing and WHOIS lookups.
Find elsewhere
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Hackertarget
hackertarget.com › home › whois lookup
Online Whois Lookup of IP address and Domains | HackerTarget.com
April 27, 2025 - Find the owner of an IP or Domain with our Online Whois Lookup. One of 15 Free IP Tools in our online suite. Try the API for scripted whois lookups.
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WhoisXML API
whois.whoisxmlapi.com › lookup
WHOIS Lookup via a domain, email, or IP address | WhoisXML API
Get detailed context on an IP address, including its user’s geolocation, time zone, connected domains, connection type, IP range, ASN, and other network ownership details. Access our web-based solution to dig into and monitor all domain events of interest. Domains & Subdomains Discovery Domain Availability Brand Alert Email Verification Predictive Threat Intelligence · Registrant Alert Reverse IP Reverse MX Reverse NS Reverse WHOIS · Screenshot Service Subdomains Lookup Website Categorization
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IPLocation
iplocation.io › ip-whois-lookup
IP WHOIS Lookup
IP WHOIS Lookup tool by iplocation.io efficiently uncovers IP address information. Quickly find accurate ownership, location, and domain details in our user-friendly interface powered by WHOIS data.
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PowerDMARC
powerdmarc.com › whois-lookup-tool
Whois IP Lookup & Whois Domain Lookup Free Domain Tools
September 1, 2023 - Do a quick Whois search and uncover IP Information for any domain or IP with our lightning-fast Whois lookup tool.
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Whoer
whoer.net › checkwhois
WHOIS Lookup – Check IP and Domain Info
With Whoer’s WHOIS details lookup you can see registration data for both domains and IP addresses, location by IP (country, city, ISP) For domains, the tool shows the registrar, registration and expiry dates, domain status, name servers, and, when not protected, the registrant or organization and their contact details.
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Netlas
netlas.io › home › mapping the internet › top whois & rdap tools for fast ip address lookup
Top WHOIS & RDAP Tools for Fast IP Address Lookup - Netlas Blog
April 14, 2025 - To execute a WHOIS lookup using SurfaceBrowser™, follow these steps: Log In: Access your account at SecurityTrails Login. Navigate to SurfaceBrowser™: Go to SurfaceBrowser Tool. Enter the IP Address: Input the IP you wish to examine. Review the Results: Analyze the detailed information provided. For example, querying the IP address 8.8.8.8 might yield details such as: ... SurfaceBrowser™ doesn’t stop at basic IP data. It also reveals all domains associated with that IP—potentially listing tens of thousands of domain names.
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MxToolBox
mxtoolbox.com › whois.aspx
Whois Lookup Tool - Check Domain registration info - MxToolbox
This test will return WHOIS registration results for a DOMAIN name. Depending on the registrar, you can see various information like who is it registered to, when it was registered and when it expires, where the DNS is hosted, and more.
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Bellingcat
bellingcat.gitbook.io › toolkit › more › all-tools › domaintools-whois-lookup
DomainTools Whois Lookup | Bellingcat's Online Investigation Toolkit
DomainTools Whois provides detailed domain name registration information, and can be used to investigate details about domains or IP addresses.
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Whois
whois.net
Whois Lookup & IP | Whois.net
WhoIs lets you perform a domain whois search, whois IP lookup and search the whois database for relevant information on domain registration and availability. This can help provide insight into a domain's history and additional information. Use WhoIs lookup anytime you want to perform a search ...
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YouGetSignal
yougetsignal.com › tools › whois-lookup
WHOIS Lookup Tool - Perform a Reverse Lookup on a Domain Name or IP Address
This tool performs a WHOIS lookup on a remote address. A WHOIS lookup can help determine the owner of a domain name or an IP address on the Internet.
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IP Location Tools
tools.iplocation.net › whois-lookup
Whois Lookup - Tools - IP Location
Lookup Autonomous System Number (ASN) for an IP Address. Where am I? Find my IP location via IP Lookup. ... Who is Hosting a Website Alexa Traffic Rank Checker Domain Age Checker Reverse DNS Lookup HTTP Server Header Check Is my website down?
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WhoisFreaks
whoisfreaks.com › tools › ip-whois › lookup
IP Whois Lookup Tool - Fast & Accurate | WhoisFreaks
February 12, 2025 - Discover detailed Whois data for any IP address instantly with WhoisFreaks' fast, reliable, and accurate IP lookup tool.