Domain Tracker

Check when any domain expires by querying the WHOIS registry. Here is how expiry lookup works, what to do with the results, and how to monitor expiry automatically.

Most email deliverability problems have domain-level causes: missing authentication records, blacklist hits, or misconfigured MX. Here is how to diagnose and fix each one.

A domain health check audits six dimensions — SSL, WHOIS expiry, DNS, blacklist status, security headers, and uptime — and combines them into a health score. Here is what it covers.

Answers to the most common SSL certificate problems: auto-renewal failures, chain errors, mixed content, and why browsers sometimes show warnings after you have already renewed.

A low health score means one or more critical signals are failing. This diagnostic guide covers every possible cause and exactly how to fix each one.

Answers to common DNS questions: why changes take time to propagate, what TTL means, how nameservers relate to DNS records, and how to verify changes are live.

Domain monitoring automatically checks your domains for expiry, SSL issues, DNS changes, blacklist listings, and downtime — alerting you before problems become outages.

Uptime monitoring continuously checks your website and alerts you the moment it becomes unreachable. Here is how it works, what downtime actually costs, and how to set it up.

Everything you need to know about domain expiry: grace periods, redemption periods, what happens to your website and email, how to renew, and how to prevent it.

A WHOIS lookup retrieves registration data for any domain — who registered it, when it expires, and which nameservers it uses. Here is how to use it and what the results mean.

The DNS tab shows all records for your domain, enriched with IP geolocation, ASN, CDN detection, and DNSSEC status. Here is how to read it.

The WHOIS tab shows registration data fetched directly from the authoritative WHOIS server. Here is what every field means.

The SSL tab shows everything about a domain's certificate and TLS configuration fetched via a real TLS handshake. Here is what each field means.

The watchlist is a dedicated space for monitoring domains you are considering buying, tracking for acquisition, or watching as defensive brand monitoring.

Export domain data as CSV for spreadsheets, JSON for integrations, or PDF for client reports. Here is how to access each export format.

Domain types categorize what you are doing with each domain. Choosing the right type affects how domains are organized, which alerts are suggested, and how reports are grouped.

The risk score is separate from the health score — it measures how vulnerable a domain is to future problems, hijacking, and reputation damage.

Screenshot capture takes a full-page snapshot of a website. Use it for visual change detection, defacement monitoring, and client portfolio documentation.

Import your entire domain portfolio at once using CSV upload. Each domain costs 1 credit to import and triggers an initial scan automatically.

The SEO scan runs a comprehensive 8-dimension audit. Here is what each dimension checks, how the score is calculated, and what actions to take.

Every scan is stored in history. Compare any two scans side by side to see what changed in DNS, SSL, security headers, SEO scores, or uptime.

The heatmap gives you an instant color-coded overview of every domain in your portfolio. Red means critical, green means healthy — find problems at a glance.

Port scanning reveals which services are publicly exposed on a domain's server. Certain open ports are expected — others are serious security risks.

Uptime monitoring sends HTTP requests to your domain on a schedule and alerts you the moment it stops responding. Here is how it works and how to configure it.

Content change monitoring takes snapshots of web pages and alerts you when the content changes — catches defacement, competitor updates, and unauthorized edits.

The performance scan measures Core Web Vitals — the speed and stability signals Google uses as ranking factors. Here is what each metric means and how to improve them.

Tech stack detection fingerprints a website's technology from HTTP headers, HTML patterns, JavaScript globals, and DNS — without needing server access.

The health score is a single number (0-100) summarizing a domain's overall status across SSL, WHOIS expiry, DNS, blacklist, security headers, and uptime.

Set up automatic domain expiry alerts so you never accidentally let a domain lapse. Works for owned domains and client portfolios.

Monitor SSL expiry, detect unexpected certificate changes, and get alerted before your site shows security warnings to visitors.

Every alert trigger type, threshold option, and notification channel explained. Reference for building a complete monitoring alert setup.

Automatically detect when DNS records change - catch unauthorized IP changes, email routing modifications, and nameserver hijacks.

What SSL monitoring checks, what each field means, how to interpret certificate chain errors, and best practices for keeping HTTPS healthy.

WHOIS is the protocol and database that records who registered a domain and when it expires. Here's everything it can tell you.

How subdomain discovery works, what subdomain takeover means, and how to detect and fix dangling DNS records before attackers exploit them.