Netlas.io
Netlas.io is a network scanner and search engine on the Internet. Netlas stores DNS records of billions of domain names, hundreds of millions of HTTP responses and SSL certificates. All this information can be obtained through several tools:
Responses Search: This collection consists of results from internet scans. Netlas non-intrusive scanners continuously scan internet-accessible hosts and save their responses.
DNS Search: These stores domain names, their corresponding IP addresses, and other types of DNS records.
IP WHOIS: Information about the owner and management of an IP address, including the IP address range, network provider name, and contact information.
Domain WHOIS: Information about the domain owner and registrar, such as contact information, registrar details, registration dates, and expiration dates.
Certificates: Database of SSL certificates collected from various sources.
Netlas is an indispensable tool for any cybersecurity professional!
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SecurityTrails
Data for Security companies, researchers and teams. Fast, always up API that allows you to access current and historical data. The API is paid via a simple pricing structure that allows you to embed our data into your applications. It’s all here, fully-indexed historic and current data, ready to be accessed asap. Search nearly 3 billion historical and current WHOIS data and WHOIS changes. Search our daily-updating database, it’s over 203 million deep and growing. Know what tech sites are running, and search by over a thousand technologies. Get monthly access to over 1 billion passive DNS datasets. Get the most current intel when it comes to IPs, domains, and hostnames in real-time. Searching is fast and simple with tagged and indexed intel. Tap into a treasure-trove of cyber security gold and get the info you can’t find anywhere else. We’re proud to offer security analysts and developers the most current DNS and domain intel with our powerful API.
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JsonWHOIS
JsonWhois is a domain API service that provides real-time WHOIS data, domain details, full-page screenshot capture, and social data statistics through a simple JSON-based API designed for developers and automated systems. It delivers up-to-date domain registration information such as creation and expiration dates, registrar details, registrant and administrative contacts, nameserver records, and status codes, enabling programmatic access to essential domain metadata. In addition to WHOIS lookup, JsonWhois offers a fast screenshot API that captures full web page images of domains, refreshes them monthly, and stores historical screenshots for trend or archival use. It also includes social data metrics tied to domains across platforms like Google, Twitter, Facebook, LinkedIn, Pinterest, and more, giving insight into a domain’s social footprint. JsonWhois supports multiple programming languages and integration environments including PHP, NodeJS, and Python.
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DomScan
DomScan is a domain intelligence platform for developers and AI agents. It covers domain availability, DNS, WHOIS/RDAP, valuation, certificates, subdomains, reputation, typosquatting, security, and monitoring. Use REST APIs, MCP tools, browser tools, OpenAPI, SDKs, or the CLI. Where supported, responses keep evidence, confidence, caveats, and unknown states visible. Each operation publishes its cost and limits. New accounts receive 10,000 free credits every month with no card required.
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