Security Analyst
Monitor threats, investigate incidents, and protect infrastructure.
Security analysts are the first line of defense. Whether you're triaging alerts, hunting threats, or auditing domains — these tools give you the intelligence to move fast and with confidence.
Start here — no account needed.
IP Reputation Lookup
Check any IP against live threat feeds with abuse score and risk context.
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CVE Lookup
Search the NVD for vulnerabilities by CVE ID or keyword.
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Subdomain Finder
Enumerate subdomains via certificate transparency logs.
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URL Scanner
Check any link for phishing, malware, and scam indicators.
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WHOIS Lookup
Domain registration details, registrar, and DNSSEC status.
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Email Header Analyzer
Trace origin IP, check SPF/DKIM/DMARC, detect spoofing.
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Go deeper with Pro tools.
Domain Intelligence
ProFull-stack domain scan — WHOIS, DNS, SSL, IP rep, and threat signals.
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Vulnerability Intelligence
ProSearch CVEs across vendors and products with threat scoring.
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AppSec Console
ProFull application security audit with headers, TLS, DNS, and vuln checks.
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Bulk IP Lookup
ProLook up up to 100 IPs at once with CSV export.
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Level up your knowledge.
What Is IP Reputation and How Is It Scored?
IP reputation determines whether your emails reach inboxes or get blocked, whether your traffic gets flagged as suspicious, and whether security systems trust your infrastructure. Here's how reputation scores are calculated and what drives the numbers.
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How to Check If an IP Address Is Malicious: A Security Engineer's Guide
When your security monitoring flags an unusual connection, getting a fast and accurate answer on whether an IP is malicious can stop an attack before it becomes a breach. Here's how to do it right.
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What Is Cloud Provider Detection and Why It Matters for Security Teams
When an IP address hits your network, knowing it's from AWS, Azure, or a budget VPS changes everything. Cloud provider detection gives security teams the hosting context they need to prioritize alerts, enforce policies, and respond to incidents faster.
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URL Scanner Tools: How to Safely Analyze Suspicious Links Before Clicking
That email from your bank asking you to verify account details. The shortened link from an unknown sender. URL scanner tools let you analyze suspicious links in isolated environments before you click — here's how they work and what to look for.
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Top 15 Free OSINT Tools for Network and Security Professionals
Discover the top 15 free OSINT tools for network security, IP lookup, domain analysis, DNS, and threat intelligence. Find the right tool for your workflow.
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How to Perform a Complete IP Address Audit: Step-by-Step Guide
Learn how to audit an IP address step by step — covering geolocation, ASN lookup, cloud provider detection, blacklist status, and open port scanning.
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Email Security Audit Checklist: SPF, DKIM, DMARC, and Beyond
A systematic audit of SPF, DKIM, DMARC, and emerging standards like BIMI can catch misconfigurations before they become costly breaches. Here's the complete checklist security engineers rely on.
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What Is a WHOIS Lookup and Why Security Engineers Use It
WHOIS lookups reveal who owns a domain, when it was registered, and how to reach them. Here's why that information is essential for security investigations, threat intelligence, and network operations.
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Get Pro. Use every tool, unlimited.
Pro unlocks advanced tools, removes rate limits, and gives you full access to every feature on CyrusX — for $9.99/month.