Whois API Webservice
Threat intelligence software
System security software
- Features
- Ease of use
- Ease of management
- Quality of support
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What is Whois API Webservice
Whois API Webservice is an API-based service that provides programmatic access to WHOIS domain registration data and related domain intelligence. Security teams, fraud analysts, and developers use it to enrich investigations, monitor domain ownership changes, and support workflows such as phishing triage and brand/domain monitoring. The product focuses on structured WHOIS lookups and integrations rather than a full threat intelligence platform with broad collection sources and analyst-driven reporting.
Programmatic WHOIS data access
The service is designed for automated WHOIS lookups via API, which supports integration into security tooling and internal applications. This makes it suitable for enrichment steps in incident response and fraud workflows where domain registrant context is needed. It fits teams that prefer to assemble their own pipelines rather than rely on a fully managed intelligence portal.
Useful for domain investigations
WHOIS data can help correlate domains by registrant details, registration dates, and registrar information during phishing and impersonation investigations. It can also support monitoring for newly registered or recently changed domains that may indicate emerging abuse. This is a common enrichment layer used alongside other telemetry in threat intelligence operations.
Integration-friendly service model
An API-first delivery model typically enables use in SIEM/SOAR playbooks, case management systems, and custom dashboards. This supports repeatable, auditable enrichment at scale compared with manual WHOIS lookups. It can be deployed without standing up a separate platform UI for end users.
Narrow intelligence scope
The product centers on WHOIS and domain registration intelligence rather than broad threat intelligence collection. It does not inherently provide the wider set of sources often expected in threat intelligence programs (for example, social, dark web, or brand abuse monitoring) without additional tools. Organizations may need complementary services to cover those use cases.
WHOIS data quality variability
WHOIS records can be incomplete, privacy-protected, or inconsistent across registrars and TLDs. This can limit attribution and correlation, especially when registrant details are redacted or standardized. Users should expect gaps and plan for fallback enrichment methods.
Limited analyst workflow features
API services typically provide data access but fewer built-in investigation workflows such as alerting, case management, and reporting. Teams that need turnkey dashboards, automated risk scoring, and managed intelligence outputs may find the service insufficient on its own. Additional engineering effort may be required to operationalize the data.
Plan & Pricing
Pricing model: Pay-as-you-go (credit-based) Free tier/trial: 500 complimentary API credits after sign-up (no credit card required) Example costs (from vendor docs/pages):
- WHOIS API — hardRefresh parameter (real-time fetch) = 5 WHOIS API credits per record. (documented in WHOIS API docs)
- Bulk WHOIS API — Cost = 1 credit per domain (for bulk jobs). (documented on Bulk WHOIS API page)
- WHOIS History API (Domain Research Suite / DRS) — 1 request costs 50 DRS credits (DRS-credit pricing used by DRS products). (documented on WHOIS History API pricing page) Notes & availability:
- Monetary prices for credits / public money-based price-per-credit are not published on public product pages; purchase/credit-bundle monetary rates appear to require logging in or contacting sales/are provided in account portal/enterprise pages.
- Enterprise API Packages and annual subscription bundles are available; monetary amounts for enterprise tiers require contacting sales or are available via the account/enterprise pages.
Seller details
WhoisXML API, Inc.
Private
https://www.whoisxmlapi.com/
https://x.com/WhoisXMLAPI
https://www.linkedin.com/company/whoisxmlapi/
