All 40 tools
Every NetScanly tool in one place — free, instant and without an account.
DNS Tools
Look up, validate and troubleshoot DNS records worldwide.
DNS Lookup
Query any DNS record type for a domain.
Reverse DNS Lookup
Find the PTR hostname behind an IP address.
DNS Propagation Checker
Compare DNS answers across public resolvers.
DNSSEC Checker
Verify DNSSEC signing and validation for a domain.
Nameserver Checker
Audit the authoritative nameservers for a domain.
Domain Tools
WHOIS, registration data, ownership and domain health.
WHOIS Lookup
Registration, registrar and status data for a domain.
Domain Age Checker
See exactly how old a domain registration is.
Domain Expiry Checker
Check when a domain registration expires.
Domain IP Lookup
Resolve a domain to its IPv4 and IPv6 addresses.
SSL / TLS
Certificate inspection, expiry monitoring and TLS posture.
SSL Certificate Checker
Inspect a site's TLS certificate and chain.
SSL Expiry Checker
Days remaining before a certificate expires.
Certificate Transparency Search
Every certificate ever issued for a domain.
HTTP & Headers
Response headers, status codes, redirects and technology.
HTTP Headers Checker
View every response header a URL returns.
Security Headers Checker
Grade a site on its HTTP security headers.
Redirect Checker
Trace the full redirect chain for a URL.
HTTP Status Code Checker
Check the status code and response time of a URL.
Web Technology Detector
Identify the server, CDN and frameworks a site uses.
Web Security
CORS, CSP, cookies and web hardening checks.
CORS Configuration Checker
Test cross-origin resource sharing policy.
Content Security Policy Analyzer
Parse and grade a site's CSP.
Cookie Security Checker
Audit cookie flags for Secure, HttpOnly and SameSite.
Robots.txt & Sitemap Checker
Validate robots.txt, sitemap and security.txt.
Email Security
SPF, DKIM, DMARC and mail-server protection.
SPF Record Checker
Validate a domain's SPF record.
DMARC Record Checker
Check DMARC policy and reporting configuration.
DKIM Record Checker
Look up a DKIM public key by selector.
MX Record Checker
List the mail servers that accept a domain's email.
Email Security Score
One combined SPF, DKIM, DMARC and MTA-STS audit.
IP Intelligence
Geolocation, ASN, ownership and network context.
IP Address Lookup
Geolocation, ASN and network owner for any IP.
What Is My IP Address
Your public IP, network and connection details.
Network Tools
Port checks, reachability and latency measurement.
TCP Port Checker
Test whether a TCP port is open and reachable.
Website Reachability & Latency Test
Confirm a site is up and measure real response time.
Recon & Discovery
Subdomain discovery and external attack-surface mapping.
Network Calculators
Subnet, CIDR and IP address maths — instant, in-browser.
Subnet Calculator
Network, broadcast, mask and host range from any CIDR.
IP Address Converter
Convert IPv4 between decimal, binary and hex.
Hash & Encoding
Hashes, Base64, URL encoding and token decoding.
Hash Generator
SHA-1, SHA-256, SHA-384 and SHA-512 hashes.
Base64 Encoder & Decoder
Encode or decode Base64 in your browser.
URL Encoder & Decoder
Percent-encode or decode URLs and parameters.
JWT Decoder
Decode JSON Web Token header and claims.
Generators
Passwords, UUIDs and secure random values.
Password Generator
Strong random passwords with entropy scoring.
UUID Generator
Generate random RFC 4122 version 4 UUIDs.
Vulnerabilities
CVE lookup and vulnerability severity scoring.