Security Intelligence (SI) Suite | WhoisXML API

Security Intelligence (SI) Suite

The SI Suite is WhoisXML API’s ultimate WHOIS, IP, DNS, and subdomain data package for all types of security product enrichment, open-source intelligence (OSINT) pivoting, indicator of compromise (IoC) expansion analyses, phishing and fraud detection programs, and more.


The suite combines extensive threat intelligence access with flexibility so you can choose the data sources and consumption models most suitable to your information security needs.

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4.2 Billion+Domains and subdomains
15.6 Billion+WHOIS records
Multi-billionDNS records
11+Years of data crawling

Our Security Intelligence (SI) Suite Value Proposition

Our greatest security intelligence package yet

The SI Suite has billions of historical WHOIS, passive DNS, IP, and subdomain records. Our data sources are highly compatible to enable easy pivoting and threat correlation so you can stay on top of the latest Internet events potentially affecting your or your clients’ security posture.

All-you-can consume data, uninhibited access

The rationale behind the SI Suite is to provide access to all our intelligence in one place with versatile consumption models so you can get the threat intelligence you need the way you need it to level up your security products, security operations center (SOC) capabilities, OSINT investigations, and more.

Skip the find-your-own data (FYOD) legwork

For the past decade, we have established connections with thousands of registrars, Internet service providers (ISPs), and other data exchange partners. That helped us build and maintain continuous streams of extensive and constantly refreshed data with high relevance for information security.

Which WHOIS, IP, and DNS Intelligence Sources Are Available?

Custom packages allow you to pick and choose what is most relevant to you.

  • Diamond: Includes all products listed below with Premium SLA
  • Gold: Pick 2 of each Tier, includes Gold SLA
  • Silver: Pick 1 of each Tier, includes Silver SLA
  • Starter: Pick 1 Tier-1 product, 1 Tier-2 product
Tier Product Frequency/updates
P Real-time & Historic Whois Streaming Real-time Stream, Daily & Quarterly Feed, Real-time API Lookups
P Real-time & Historic Passive DNS Coverage Daily + Weekly Feed, Real-time API Lookups
P Enterprise APIs & Threat Intelligence APIs Enterprise APIs T5 & Threat Intelligence APIs (1M CPM)
1 Real-time Whois Data Coverage Daily & Quarterly Feed, Real-time API
1 Real-time DNS Coverage Weekly Feeds, Real-time API
1 IP Geolocation & Netblocks Data Coverage Daily Feeds
1 Website Contacts & Categorization Feed Daily Feed
2 Subdomains Database Feed Daily Feed
2 IP Netblocks (IPv4 + IPv6) Daily Feed
2 IP Geolocation Database Daily Feed
2 Typosquatting Data Feed (Enriched) Daily Feed
2 Disposable Email Domains Feed Daily Feed
2 MAC Address Vendor Database Daily Feed

We offer discount options for prepaid tiers and annual billing for multi-year subscriptions. Contact us for more information.

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Main Security Intelligence (SI) Suite Use Cases

  • Greatly enhance your attack surface management efforts and identify potential threat sources and connected artifacts that need further scrutiny or blocking.
  • Easily feed our WHOIS, IP, and DNS intelligence into your existing security platforms to support better risk management and network security.
  • Access all the data you need to investigate look-alike web properties that can put you or your clients at risk of phishing, typosquatting, and trademark infringement.
  • Boost your threat hunting capability by getting access to extensive WHOIS, IP, and DNS data to contextualize indicator of compromise (IoC) lists and qualify newly-found artifacts.
  • Detect fraud and third-party risks by keeping track of fraudsters and domain and IP spoofers. Avoid falling for business email compromise (BEC) scams and other supply chain attacks.
  • Use domain, IP, and DNS data to make regulatory and standards compliance easier and avoid doing business with third parties from restricted areas.

Interested in What the Security Intelligence (SI) Suite Can Do?

Check our use case sheet to learn how security enterprises have successfully integrated the SI Suite into their business and network protection operations.

Download the use case sheet

For pricing details and building your customized solution, please contact us!