Domain availability & intelligence, at any scale
Check a million domains in a single request, pull parsed WHOIS data, and monitor the internet for registrations against your brand.
acme‑support‑billing.com
Likely phishing vector against acme.com. Registrar in high‑abuse cluster; MX active within 2h of registration.
One pipeline, five capabilities
Built for teams that take domains seriously
Brand protection
Detect phishing domains within seconds of certificate issuance. AI-powered content analysis confirms real threats and eliminates false alarms — before the attack page goes live.
Startup naming
Describe your product, generate tens of thousands of name candidates with AI, check availability across TLDs, and register — all in one workflow.
Domain intelligence
Look up domain registration data, check WHOIS records, and access historical snapshots to trace ownership and build evidence trails.
Registrar integration
Embed bulk availability checks directly into your product via REST API. Up to 1,000,000 domains per request with streaming results.
Cybersecurity teams
Enrich alerts with domain registration data. Cross-reference WHOIS history to identify infrastructure patterns and track threat actor campaigns.
Domain portfolio management
Monitor expiry dates, track WHOIS changes across your portfolio, and discover available domains at scale with the bulk availability pipeline.
Your lookups are yours alone
When you search for a domain, that query stays between you and us. We never share, sell, or act on your lookup data. If you find a name that's available, nobody will know — not from us.
Zero data sharing
Your queries are never sold to registrars, brokers, or anyone else. We don't monetize your search behavior. Period.
No front-running
We don't register domains you've searched for. We don't tip off anyone who might. Your discoveries stay yours.
Encrypted end to end
All API traffic is encrypted in transit. Data at rest is encrypted using AWS-managed keys.
Find the .com that nobody else found.
In an era where every good .com feels taken, the AI generates tens of thousands of name candidates and multiplies them across your selected TLDs. Describe your product, pick your extensions, and let the pipeline find what's actually available.
- Tens of thousands of name candidates from a single prompt
- Multiply across .com, .io, .dev, .app and many more TLDs
- Instant bulk availability check through the pipeline
AWS-style pricing. Pay only for what resolves
Every query flows through Bloom → DNS → RDAP → WHOIS and stops at the first definitive answer. You're billed for the method that actually resolved it — never the steps that came before. Volume discounts kick in automatically.
Each query enters the pipeline and stops at the first method that gives a definitive answer. You pay only for the resolving method — intermediate inconclusive steps are never charged. The free tier is split per-method so a cascade into the expensive end can never accidentally burn the whole budget.
Questions, answered
Quick answers to what teams ask us most about DomainRadar. Need something else? Email [email protected].
How does the pipeline pricing actually work?
How big can a single bulk request be?
How does the AI name generator work?
How does Brand Monitor catch lookalike domains?
Are my lookups private?
Are there rate limits?
Check your first batch of domains in under five minutes
Get an API key, send a bulk request, watch the pipeline stream answers back. Brand monitor and name generator are one-click extensions of the same account.
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Generate an API key
Open the API keys panel in the dashboard and create one. Keys are scoped to your organization and revocable at any time.
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Send a bulk check request
POST your list of domains (up to 1,000,000 per request) to the bulk endpoint with your API key in the Authorization header. The pipeline runs cache → DNS → RDAP → WHOIS for each domain and stops at the first stage that can give a definitive answer — you pay only at that stage.
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Stream the results
Responses stream as each domain resolves. No polling, no pagination, no orchestration code on your side. Use them inline, or save the batch in your account for later analysis.
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Enable Brand Monitor (optional)
Add a watched word (your brand, a product name) in the dashboard. DomainRadar watches every SSL certificate published to public CT logs and emails you within seconds when a matching certificate is issued — optional AI content analysis scores the risk and filters out coincidences before they reach your inbox.
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Generate available names (optional)
Use the AI name generator to brainstorm at scale — describe your product and tone, get thousands of name candidates, pipe them straight through the availability pipeline, register what is free.
Other products on the platform
DomainRadar shares its pricing model, dashboard, and pay-as-you-go billing with every other product on Norcube.
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Read moreCheck your first million domains today
Free tier includes 1,000,000 availability checks per month. No credit card required.