Every way HostTracker watches your site
Eight monitoring types, each purpose-built for a different failure mode — from a broken checkout flow to an expiring certificate — all running from 300+ worldwide locations with the same alerting behind them.
Pick a check, or add all of them
Every plan mixes and matches these freely on the same monitor list. Just want to know if a site is reachable right now, without picking a check type at all? Try the free website down checker — no signup required.
Simulate multi-step checkout and login flows
Model real user journeys — login, search, checkout — and get alerted the instant a step in the flow breaks or a page stops responding correctly.
FunctionalityValidate API endpoints against their contract
Apply a validation policy to your web service endpoints and catch a wrong status code, a broken JSON/XML response, or a slow reply before your integrations notice.
PerformanceTrack real page-load speed from 300+ locations
Automate a real browser visit to your page and measure load timing against the policy you set, so slowdowns surface before visitors start bouncing.
PerformanceWatch server CPU, RAM and disk load in real time
Get alerted the moment CPU, RAM, disk, or network connection load on your server crosses the threshold you configure — before it turns into an outage.
PerformanceMonitor database connections and query results
Run periodic connection checks and validate query results across MySQL, PostgreSQL, SQL Server and more, so a silent database problem never goes unnoticed.
SecurityCatch SSL and domain expiry before it's too late
Stay ahead of certificate expiration, revocation, chain errors, weak security protocols, and domain expiry dates — all from one monitor.
SecurityDetect malware and phishing flags automatically
Check your site against Google's Web Risk API around the clock and find out the moment it's flagged, before browsers start blocking your visitors.
SecurityCheck and monitor DNS blacklist status
Run a DNS blacklist check and keep monitoring it going forward, so a spam, phishing, or malware flag against your domain never sits there undetected.
Free diagnostic checks, explained
Run ping, port, traceroute, and DNS checks instantly — free, no signup — and learn to read every number they return.
Ping test
What round-trip time and packet loss actually mean — and why a perfectly healthy server can ignore ping entirely.
Port check
Open, closed, or filtered — what each state says about your firewall, and which ports matter for mail delivery.
Traceroute
How to spot the one hop adding all the latency — and which timed-out hops are cosmetic, not broken.
DNS lookup
Why different locations see different answers, and how TTL decides when your DNS change is truly live everywhere.
Not sure which check you need? Start free and try them all
Every plan includes access to every monitoring type above — add a check, see the results, and decide what fits your site.