Get a list of all domains associated with an IP address via API calls with outputs in JSON and XML formats.Get started
500 free API credits. No credit card required.
Determine infrastructure connections between hostnames and IP addresses using one of the biggest archives of Domain Name System (DNS) records today.
Reverse IP & DNS API lets you query up to 30 IPs per second so you can quickly identify which domains are connected.
Our Reverse IP & DNS 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. Further analysis is possible, too, with Reverse WHOIS API and Reverse WHOIS Search.
During or after an intrusion or incident, you can use Reverse IP capabilities to identify the attackers’ hostnames.
You can also use Reverse IP API to ensure that your website’s IP address is not being used by any other domain. That may lower your search engine ranking and move your site to a less reputable area of the Internet.
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.
DNS Database Download is a large historical DNS record repository with several billions of historical DNS events as specified in our files covering A, MX, NS, TXT, CNAME, and SOA records.Order database
In this white paper, we give an overview of the Domain Name System, or DNS, one of the pillars of the Internet.Read more
Our APIs are available in an enhanced version that offers better performance with a dedicated load balancer and a premium endpoint to enable faster throttling for large-scale API deployments.Learn more
Reverse IP/DNS capabilities are only a part of our extensive set of APIs. Get complete access to domain, IP, and DNS intelligence with an annual WhoisXML API subscription.Learn more