12+ Free Developer & Cybersecurity Tools

Network & DNS Diagnostic Hub

High-performance network utilities engineered for system administrators, webmasters, and security engineers. 100% free with unlimited lookups.

DNS & Domain Intelligence

Analyze domain DNS records, global DNS-over-HTTPS propagation status, and authoritative nameservers.

Test DNS changes across worldwide Anycast nodes in North America, Europe, Asia, and Turkey.

Inspect A, AAAA, MX, TXT (SPF/DMARC), NS, CNAME, and SOA records instantly.

Lookup domain registrar, registration date, expiration date, and registry nameservers.

Audit email deliverability, SPF authorization mechanisms, and DMARC enforcement policies.

IP address intelligence, open port testing, spam reputation lists, and privacy leak shields.

Detect your public IPv4/IPv6, ISP carrier, ASN, and VPN/Proxy risk score in real time.

Verify open/closed status for web, database, email, and remote access ports (80, 443, 22, 3306, 3389).

Check if your server IP is listed on Spamhaus, Barracuda, SORBS, or SpamCop DNSBLs.

Test whether your web browser leaks your real IP address over WebRTC STUN when using a VPN.

SSL certificate diagnostics, HTTP security headers scoring, subnet math, and hashing algorithms.

Verify TLS expiration dates, SSL issuer, SAN hostnames, and SHA-256 fingerprint.

Audit HSTS, CSP, X-Frame-Options, and Referrer-Policy with A+ grade security scoring.

Calculate network address, broadcast address, netmask, wildcard mask, and usable host ranges.

Generate instant client-side MD5, SHA-1, SHA-256, and SHA-512 cryptographic hashes.

CLI & Developer SDK Ready

Integrate our high-speed JSON APIs into your automation scripts or use our official NPM and PyPI packages.