Free network diagnostic tools for DNS, IP, email and SSL checks
Terminal, files, databases, tunnels and secrets in one window
Stage
Not given
Not given
Founded
Not given
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Based in
IN
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Pricing model
Freemium
Open source
Pricing
Free plan: All 41 tools with unlimited checks, 3 saved domains with daily monitoring, 7 days of history. Pro plan: $29/month for 50 domains, scans every 6 hours, email, Slack, Telegram and webhook alerts, 12 months of history and API access.
Free (MIT licensed open source, no paid tier)
Key features
DNS Lookup - resolve A, AAAA, MX, TXT, NS, CNAME records
Blacklist Checker - query 7 major DNS blocklists
SSL/TLS Certificate Checker - verify certificate chain, expiry and protocol support
Email Deliverability - check SPF, DKIM and DMARC records
WHOIS Lookup - query domain registration details
Reverse DNS (PTR) - check IP to hostname resolution
Port Checker - test common HTTP/HTTPS ports
BIMI Lookup - query BIMI TXT records
Domain monitoring with automated scans
Multi-channel alerts via email, Slack, Telegram and webhooks
Terminal with split panes and SFTP file browser
Workspace isolation with password protection
Fleet operations across 21 capabilities
AES-256-GCM encrypted vault for secrets
AI agent integration with MCP
Granular access control per capability
Cross-device sync with encrypted relay
Audit logging of all agent actions
What makes it different
41 tools all available free with unlimited checks
Clear sourcing - every result shows its source and what was not tested
Live DNS queries from edge servers via DNS-over-HTTPS
Domain monitoring and alerts with affordable Pro plan at $29/month
The Network Tools
OpsMaxx