Free network diagnostic tools for DNS, IP, email and SSL checks
Stage
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Founded
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Based in
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IN
Pricing model
Free
Freemium
Pricing
Not given
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.
Key features
Interactive GPU/Mac checker
Coverage of language, image and video models
Memory estimates from official sources and benchmarks
Runs entirely in browser with no accounts
Open data export under CC BY 4.0
Independent review of data accuracy
Linked sources for all numbers
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
What makes it different
Free and independent, no ads or sponsorships
Uses only official sources and published benchmarks
Transparent labeling of estimates vs official measurements
No personal data collection or cookies
Fastest-moving sources rechecked weekly
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
RigCheck
The Network Tools