# InternetSecure.org

> Free website security scanning, AI readiness checking, and paid uptime monitoring. Scan any domain for SSL/TLS issues, missing security headers, DNSSEC, DMARC and email authentication — free, no signup. Paid plans add 1-minute uptime monitoring from 6 global locations, change-detection alerts, and an automatic branded offline page on your own domain during outages.

InternetSecure helps organizations track SSL/TLS certificates, security headers, HTTPS compliance and availability across their domains. Free tools are unlimited and require no account. Monitoring plans: Free (limited), Plus, Pro ($20/month) and Enterprise.

## Free tools

- [Domain Security Scanner](https://internetsecure.org/): scan any website for SSL, security headers, DNSSEC, DMARC — graded A–F
- [AI Readiness Checker](https://internetsecure.org/ai-readiness): test llms.txt, AI crawler access, MCP, structured data — graded A–F
- [Certificate Decoder](https://internetsecure.org/certdecoder): decode PEM/CRT/X.509 certificates instantly
- [Certificate Chain Debugger](https://internetsecure.org/certdeepdive): deep chain validation and expiry tracking
- [Website Speed Test](https://internetsecure.org/speed): performance and Core Web Vitals analysis
- [IP/DNS Scanner](https://internetsecure.org/ip): IP geolocation, hosting type, VPN/proxy detection

## Monitoring (paid)

- [Uptime Monitoring](https://internetsecure.org/uptime): 1-minute checks from 6 global locations, consensus-verified alerts
- [Plans and pricing](https://internetsecure.org/register): Free, Plus, Pro and Enterprise tiers; 30-day Pro trial
- [Emergency help](https://internetsecure.org/under-attack): site-down and under-attack assistance

## Research & data

- [Top 400 Websites Security Study](https://internetsecure.org/top400): how the most-visited sites score on security
- [UK Government HTTPS Compliance](https://internetsecure.org/gov): gov.uk domain compliance tracking
- [Blog](https://internetsecure.org/blog): security, networking and infrastructure guides

## Help

- [Help & FAQ](https://internetsecure.org/help)
- [About](https://internetsecure.org/about)