Determine infrastructure connections between hostnames and IP addresses using one of the biggest archives of Domain Name System (DNS) records today.
Reverse IP API lets you query up to 10 IPs per second so you can quickly identify which domains are connected.
Our Reverse IP API comes with code samples for easy integration in several programming languages. It’s also available as a Splunk Enterprise application.
A reverse IP API is an intelligence consumption model with data delivery via API calls. The API establishes which domains might be using the same IP to host their websites’ contents. It allows website owners to check if their IP address is shared or dedicated and serves several purposes.
Identify all potentially dangerous domains that share the same IP with known malicious websites.
Identify your attack surface by discovering all the hosts and IPs related to a given target website/IP address. You can also check if you have the same IP addresses as vulnerable websites with Reverse IP API.
During or after an intrusion or incident, you can use Reverse IP capabilities to identify the attackers’ hostnames.
Hosting your website on a crowded IP address or one with a bad reputation due to malicious neighboring domains can negatively affect your website performance and how you are perceived on the web. It may even land you on a blacklist.
Our Reverse IP API enables you to conduct an inventory of all your websites or those of your competitors hosted on the same IP address. The API also helps with brand protection, as it can find other domains that potential attackers own and pinpoint otherwise-unknown related web properties that can cause harm.
“We want to provide all Cyberscape users the ability to integrate relevant data for their cyber threat investigations. WhoisXML API provides unique data that will be helpful to the cyber threat investigation community, allowing analysts to shorten the cycle of understanding and mitigating threats.”
“WhoisXML API’s passive DNS database, even the lite version for academic purposes, has much better subdomain data coverage compared with other commercial and free databases.”
“WhoisXML was the game changer for us. It has revolutionized our ability to disrupt cybercrime in process and at scale by quickly identifying all of the vendors providing material support for scammers using sophisticated website templates that look legitimate. By quickly identifying the vendors unknowingly supporting the criminals, we can provide them with public interest justification to burn down the criminal infrastructure.”
“After thorough testing, we were thrilled to find that Chronicle DNS Database consistently identified 10 times more 'active' subdomains compared to other options in the market.”
















Enhance your domain research toolkit by our enterprise-grade web-based solution that helps you in searching...
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Get the most relevant data to be ahead of emerging security threats.
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Give the list of domain names tied to the specified DNS records via API calls with outputs in JSON and XML.
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Easily identify malicious resources and retrieve their threat information.
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Find domains and subdomains related by specific terms in their hostnames.
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Easily detect all typosquatting domain names as soon as they are registered each day.
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Get insights for the new business registered on the web.
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Assess the domain's or IP addresses reputation and risk profile with a simple score based on a comprehensive...
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Get data feeds of new registered domains along with their WHOIS data generated in real time.
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Get data feeds of SSL certificates along with their well parsed fields in real time. Accurate. Up-to-date.
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Get vendor information, detect virtual machines, manufacturer, location, read the information encoded in the MAC address.
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Monitor exact matches, variations and common misspellings of your brand name & trademarks.
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Get the most comprehensive database of registered MAC address blocks, also referred to as OUIs (Organizationally Unique Identifiers).
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Find out the exact physical location of any IP address, email or domain name.
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We provide complete and relevant domain WHOIS data which can be customized and easily integrated as per your business needs.
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Reverse IP/DNS API
Get free access to our API. 500 free credits. No credit card required.