API Ninjas Domain API review
A focused domain metadata API for developers building single-domain lookup workflows.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
API Ninjas Domain API is a developer-facing service for checking domain availability and returning domain intelligence. It suits teams building availability checkers, domain search tools, brand-monitoring dashboards, and related applications through standard HTTP requests. Results can include registration creation, expiration, and update dates; registrar identification; status codes; MX records; free-email and disposable-email detection; parked-domain detection; hosting and network information; IPv4 address; and country information.
The published plans create a clear progression from evaluation to production use. The Free plan costs $0 per month and requires no payment information, with positioning for evaluation and demo purposes. Developer costs $59 per month when billed monthly or $39 per month when billed annually, adding commercial API access for low-volume integrations, standard support, and a 99% uptime SLA. Business costs $149 monthly or $99 monthly when billed annually, adding data storage, priority support, shared premium servers, and a 99.95% uptime SLA. Professional costs $299 monthly or $199 monthly when billed annually, with private servers, development support, priority support, and a 99.95% uptime SLA. Enterprise provides custom capacity, access controls, dedicated support, private servers, and a 99.99% uptime SLA.
Its strongest fit is narrow and practical: applications that need structured domain metadata through an API rather than a standalone search interface. The GET endpoint uses an API key and supports standard HTTP requests in multiple programming languages, making it suitable for custom developer workflows. The trade-off is request scope: the documentation specifies one required domain parameter per request, so this is better suited to single-domain lookups than bulk search. Choose it when domain availability and related email, hosting, registrar, and registration data are central to an application; choose an alternative when bulk discovery or a non-API workflow is the priority.
API Ninjas Domain API pros and cons
- Where it wins
- Covers availability, registration, registrar, status, MX, email, hosting, and IP data
- Free plan supports evaluation and demos without payment information
- Paid tiers include support and uptime SLAs up to 99.99%
- Where it doesn't
- Each request requires one domain parameter
- API-only access requires developer integration work
- Free access is intended for evaluation and demo purposes
API Ninjas Domain API fact sheet, pricing and score →
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