Website Status & Latency Checker
Diagnose domain availability, DNS resolution, SSL security, and browser connection round-trip latency in real-time.
Querying...
Browser to server
TLS Encrypted Port 443
Cloudflare DoH Query Results (Type A / CNAME)
Querying DNS over HTTPS...
What is the Online Website Status & Latency Checker?
The Online Website Status & Latency Checker is a real-time webmaster diagnostic tool designed to test domain uptime, DNS over HTTPS (DoH) resolution records, SSL/TLS protocol availability, and round-trip network response latency. It allows developers and website owners to quickly confirm whether an outage is localized or global without installing terminal tools.
Key Capabilities & Features
DNS-over-HTTPS (DoH) Resolution
Resolves domain IP addresses and CNAME aliases directly using encrypted Cloudflare DNS endpoints.
Live Latency & Round-Trip Ping
Measures the millisecond performance of DNS and connection handshakes directly from your browser client.
SSL/TLS Security Verification
Verifies whether secure HTTPS port 443 negotiation is functional for the target hostname.
Instant Error Diagnostics
Distinguishes between DNS lookup failures (NXDOMAIN), connection timeouts, and healthy operational hosts.
How to Check Website Uptime & Latency (Step-by-Step)
- Enter Domain Name: Type any domain (e.g.
nextools.org,mybrand.com) into the search bar. - Click "Run Diagnostics": The tool queries authoritative DNS endpoints and measures connection timing.
- Review Operational Status: Inspect the green/red operational badge, resolved IP records, and latency in milliseconds.
- Test Direct Tab Access: Click "Visit Site in New Tab" to verify whether web server content renders cleanly.
Frequently Asked Questions (FAQ)
What causes an NXDOMAIN DNS error? ▼
An NXDOMAIN (Non-Existent Domain) status means the authoritative DNS servers report that the domain is not registered or lacks valid nameserver and A records.
Why does a site work on my phone but show down here? ▼
This often occurs due to local DNS caching on your device or ISP, or newly changed DNS records that are still propagating across global nameservers.