Check whether any website is up or down, verify SSL Certificate expiry, view Domain WHOIS expiration date, and resolve Server DNS & IP records instantly.
Popular Test Domains:
Instant HTTP/HTTPS connection response test, server latency (ms), and broken page error detection.
Extracts live TLS validity, Certificate Authority issuer, expiration date, and remaining days.
Official ICANN RDAP & WHOIS lookup showing domain registrar and exact registration expiry.
Instant authoritative DNS query resolving primary IPv4 address, A, CNAME, and NS records.
Everything you need to know about website health, uptime monitoring, and SSL diagnostics.
Website downtime directly impacts your business revenue, user trust, and search engine SEO rankings. Search engines like Google may penalize websites that frequently experience outages or slow response times.
Industry security standards limit SSL/TLS certificate validity to a maximum of 398 days (and often 90 days for Let's Encrypt). An expired SSL certificate triggers severe browser warning screens, blocking visitors completely.
Common causes of website downtime include DNS configuration errors, server hardware overload, database connection failures, web application crashes, and datacenter connectivity interruptions.
According to Google Core Web Vitals, a good server response time (Time to First Byte - TTFB) is under 200–600 milliseconds. Anything over 1.5 seconds indicates potential hosting bottleneck or resource congestion.
We build & license the complete Team Variance 24/7 Automated Website Monitoring Platform for web agencies, IT companies, and enterprises. Get full white-label installation with real-time downtime detection, multi-channel email/SMS alerts, monthly SLA PDF reports, and SSL/Domain auto-tracking.