About WhoDNS
A unified suite of professional DNS, domain, network, security and DevOps tools — fast, install-free, and built to work reliably even where access to foreign services is restricted.
Our vision
We believe web-infrastructure tools should be accessible, fast and dependable for everyone. WhoDNS brings them together in one clean, bilingual interface and keeps as much as possible local and independent of foreign intermediaries — direct UDP DNS lookups, SSL/TLS checks with local OpenSSL, and client-side processing for tools that need no server.
Features
DNS & Domain
Records, SPF/DKIM/DMARC/DNSSEC, global propagation, WHOIS and subdomain discovery.
Local mail-tester, SPF/DMARC builder, header analyzer and blacklist (RBL) checks.
Network
Ping, port, HTTP, traceroute, reverse-IP, speed test and “My IP”.
SSL & Security
Live cert check, TLS scan, security headers, CSR/PFX and key matching.
Developer Tools
Base64, hash, JWT, UUID, Punycode, htpasswd and subnet calculator.
Workspace
Notion-like block notes and file sharing.
DevOps
Web SSH/FTP clients and an uptime-monitoring system — for signed-in users.
WordPress
Local plugin repository and the latest 10 core releases (English & Persian).
Our security commitment
- All database queries use prepared statements (no SQL injection).
- CSRF protection on every state-changing form, with secure session tokens.
- Output escaping and anti-XSS; user content is whitelist-sanitized.
- SSRF guards: tools never connect to internal/private addresses.
- Security headers, rate limiting and two-factor login (TOTP).
Our privacy commitment
- Private keys and certificates are never stored on the server.
- Many tools run entirely in your browser (nothing is sent to the server).
- Shared files are temporary and auto-deleted after a short period.
- No data selling, no ad trackers; analytics only to improve the service.
- Minimal external dependencies — most processing happens locally.
Frequently asked questions
Is WhoDNS free to use?
Do you store my data?
Why do some tools work without foreign internet?
How do I report an issue?
Tickets
Have a question, suggestion or bug to report? Reach us through the ticket system (after signing in); you can attach files and follow the reply right there.
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