Domain Reputation Real-time malicious domain checker and threat score
Check any domain against configured intelligence sources in milliseconds. Get a clear reputation score, phishing and malware categories, WHOIS context, DNS history, and SOC-ready evidence for allow/block decisions.
No credit card required · Free API key
- verdict
- malicious · 35 / 89 sources
- country
- DE · AS60729
- confidence
- 0.75
- latency
- 47 ms · cache HIT
What you get per domain lookup. Registration, DNS posture, consensus.
Real data returned for coinhive.com — a cryptomining malware distribution domain
live sampleGET /api/v1/check/coinhive.com
WHOIS
Email security DNS
Threat categories
Sources hit
0feeds
Confidence
0 %
Risk factor breakdown
Certificate history
0certificates logged since 2012
MITRE ATT&CK tactics
Classification
Cross-correlation
Multi-source threat consensus
58 blocklist sources align on threat classification
risk +8confidence +15
Related threat groups
Also includes: Subdomains · DNS history · Vulnerability scan · Related infrastructure · Timeline
Indexed
Domains
Configured
Threat Sources
<0ms
Cached Lookup
Live
Health Endpoint
Key features. Everything you need to protect your infrastructure and users.
Multi-Source Intelligence
Aggregate commercial, open-source, and research feeds with source attribution.
Real-Time Scoring
Get instant risk scores with detailed breakdown of threat indicators and confidence levels.
Threat Categories
Identify specific threat types: malware, phishing, spam, C2, cryptomining, and more.
WHOIS Integration
Enrich results with domain registration data, age, and ownership information.
Historical Data
Access reputation history to see how a domain's risk profile has changed over time.
Bulk Lookups
Check thousands of domains at once with our high-throughput bulk API.
Use cases. How security teams use this tool.
Email Security Gateways
Check sender domains and URLs in real-time to block phishing attempts.
Web Proxy Filtering
Prevent users from accessing malicious websites by checking domains at the proxy level.
SIEM Enrichment
Enrich security alerts with domain reputation data for faster triage.
Fraud Prevention
Identify suspicious domains during account registration and transactions.
What is Domain Reputation?
Domain reputation is a security scoring system that evaluates the trustworthiness and safety of domain names based on historical behavior, associations, and threat intelligence data. A domain's reputation score reflects whether it has been involved in malicious activities such as malware distribution, phishing campaigns, spam operations, or command-and-control communications. Security teams use domain reputation to make real-time decisions about blocking or allowing network traffic, filtering emails, and protecting users from web-based threats.
How Domain Threat Detection Works
Our domain reputation system aggregates data from multiple threat intelligence sources, including commercial feeds, open-source blocklists, honeypot networks, and proprietary detection systems. When you query a domain, we cross-reference it against known indicators of compromise (IOCs), analyze its DNS history, check registration patterns, and evaluate its hosting infrastructure. Machine learning models process these signals to generate a comprehensive risk score with confidence levels, allowing you to fine-tune your security policies based on your organization's risk tolerance.
Types of Malicious Domains
Malicious domains come in many forms: phishing domains impersonate legitimate brands to steal credentials, malware distribution domains host exploit kits and drive-by downloads, spam domains send bulk unsolicited email, C2 (command-and-control) domains coordinate botnet operations, cryptojacking domains mine cryptocurrency using visitors' resources, and typosquatting domains exploit common typing errors to deceive users. Our detection system identifies and categorizes each threat type, providing specific intelligence for your security stack.
Newly Registered Domain Risk
Newly registered domains (NRDs) present elevated security risks because attackers frequently register fresh domains to evade blocklists and reputation systems. Research shows that over 70% of malicious domains are used within 30 days of registration. Our system flags NRDs automatically and provides domain age information, allowing you to implement policies that scrutinize or block communications with recently registered domains until they establish a legitimate track record.
Frequently asked questions.
How often is domain reputation data updated?
What sources do you use for domain reputation?
Can I check newly registered domains?
What's the rate limit for the free tier?
Related articles. Learn more from our security research blog.
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