1.3 billion uptime checks per day

Monitor your website.
Be first to know
when it goes down

  • HTTP, HTTPS, DNS, and SSL monitoring
  • Multi-location checks with AI-powered false-alarm elimination
  • Instant alerts via SMS, email, Slack, Teams, PagerDuty, and more
  • Monitor sites behind firewalls with On-Premise Pollers

No credit card required · 30-day full-feature trial · Free plan available

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Feature overview

Check uptime from more than 130 global locations, receive instant alerts, and go from sign-up to live monitor in 30 seconds. Free forever—no credit card needed.

Free

$ 0 / forever

5 monitors · email alerts · 3 locations · 1-minute interval

Web Uptime

$ 9 / mo

25 websites· 8 locations · 1-minute interval

Enterprise Plus Web

$ 899 / mo

2,500 monitors · 16 locations · 30-second poll interval

Catch downtime before your users do.
From every angle.

Proactively monitor websites hosted on IPv4/IPv6 every minute from key locations across the US, Europe, Asia, and beyond—before your users are impacted.

Uptime monitoring icon

Website uptime monitoring

Monitor availability from more than 130 cities at intervals as low as 10 seconds. Multi-location rechecks eliminate false positives before an alert fires. Supports HTTP, HTTPS, IPv4, and IPv6.

Learn more
Ping monitoring icon

Ping monitoring

Verify that any server or network device is reachable and responding at the IP level. Track round-trip latency, detect packet loss, and get alerted the moment a host goes silent—before application-layer checks are triggered.

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DNS monitoring icon

DNS monitoring

Catch unauthorized DNS changes, misconfigurations, and resolution failures the moment they happen. Monitor A, AAAA, CNAME, MX, and TXT records from multiple global vantage points to detect hijacking or propagation issues early.

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Content checks icon

Content checks

Confirm that the right content is actually on your page—not just that it responded with 200 OK. Set keyword or phrase checks on any monitored URL and get alerted immediately if expected content disappears or unexpected content appears.

Learn more

Up and running in 30 seconds.

No agent to install. No code required. Your first monitor goes live before your coffee does.

01

Create your account

Sign up free—no credit card. Activate your 30-day full-feature trial instantly and keep up to 50 monitors free forever.

02

Add your website URL

Click Add Monitor, select HTTP/HTTPS, paste your URL. Set check frequency down to 10 seconds.

03

Choose your locations

Pick from more than 130 global monitoring cities. Add private On-Premise Pollers for internal sites behind firewalls.

04

Configure alerts and stay updated

Add contacts via email, SMS, Slack, or PagerDuty. You'll be the first to know the moment something breaks.

130+

Global monitoring cities to check from

250K

Websites monitored by one single enterprise customer

Why teams buy Site24x7

Site24x7 is the clear upgrade when you need synthetic transaction monitoring, real user monitoring, website security monitoring AIOps, and full-stack observability.

Feature Site24x7
HTTP/HTTPS uptime monitoring
Global monitoring locations 130+ cities
Minimum check interval 10 seconds
AIOps / AI anomaly detection Zia AI engine
On-Premise Poller (private networks)
Website defacement monitoring
Core Web Vitals tracking
SLA management & reporting
Free-monitors Up to 50
Paid plans from $9 / month

Trusted by 13,000+ paid customers worldwide

IIFL logo

"With Site24x7 monitoring 24/7, 365 days a year, the manpower needed to monitor assets has significantly come down. That's helping us reduce total cost of investment across our infrastructure."

Prashant Ahire

VP of IT · IIFL

Penso Tecnologia Logo

“60% of website issues are caught in advance, thanks to Site24x7.”

Evgeni Hristov

Team lead, NOC team, Delasport

"Comprehensive Monitoring Made Simple" Site24x7 has streamlined our monitoring with ease of use, accurate alerts, and dependable support. It gives us complete visibility and confidence in our systems.”

Uday

Sr IT Admin · Management Consulting, Software for: 2+ years

EBOOK

The CXO's guide to comprehensive website monitoring

Uptime, performance, and security are engineering as well as revenue concerns. This guide can help you with framework to turn website monitoring from a background function into a business advantage.

Download the free e-book now

Not just basic uptime checks

Site24x7 delivers comprehensive monitoring across synthetic transactions, web performance, REST API, website security, and more—using real browsers and global locations. Every metric is captured in detailed dashboards showing response times, error rates, uptime, and transaction flows.

Everything you need to know

What is an uptime monitor?

A website or uptime monitor helps you ensure that your site or web application is up and running.

In case of an issue, alerts will be sent, and incidents, logs, and other metrics will be available on the dashboard for further analysis.

How does Site24x7 compare to competitors?

Site24x7 goes far beyond basic uptime checks. Site24x7 adds synthetic transaction monitoring, real user monitoring, AIOps anomaly detection, On-Premise Pollers for private networks, and full-stack observability. Site24x7 monitors from more than 130 locations with check intervals as low as 10 seconds on paid plans.

How's website monitoring priced?

A free plan is available with 5 monitors. Paid plans start at $9/month (Web Uptime) with 25 monitors and 1-minute check intervals. The Web Prof plan starting at $42/month providing the option to monitor 40 monitors, 1-minute polling interval, 8 locations, and 8 transaction monitors. The Enterprise Plus Web Plan starts at $899/month with more than 2,500 monitors, 30-second polling interval, 16 locations, and 100 transaction monitors. All paid plans include a 30-day free trial.

Can I monitor my website from multiple locations/regions?

Yes, Site24x7 supports multi-location monitoring from multiple global vantage points. This enables detection of regional outages, routing issues, CDN variations, and DNS failures invisible from single-location checks. It's ideal for ensuring a smooth end-user experience across distributed applications.

How do I know when the website is down?

You will be updated immediately when an issue happens through your preferred notification mode, be it email, SMS, push notifications, calls, or through an ITSM tool like Slack, Jira, or PagerDuty. View our list of third-party integrations to ensure seamless workflow integration.

Is Site24x7 website monitoring prone to false alerts?

Site24x7 is committed to zero false alerts and we've implemented numerous measures to ensure our fail-proof plan. Site24x7 reduces false alerts in website monitoring through multi-location verification, configurable thresholds, and dependency mapping.

How often should I check the uptime to ensure optimal reliability?

Check intervals depend on your site's criticality. Site24x7 provides flexible website monitoring intervals—10 seconds, 30 seconds, one minute to a maximum of one day. The practical goal isn't the shortest possible interval—it's the shortest interval that fits your mean time to detect target. Pair frequent checks with multi-location polling to eliminate false positives from regional network blips.

What causes website downtime, and how can monitoring prevent it?

Common causes include server/infrastructure failures, traffic overload, bad deployments, DNS/network issues, SSL certificate expiry, and third-party failures.

Monitoring helps to collapse the time between failure and fix. Uptime monitors detect outages within seconds.

What's the difference between uptime and website availability?

Though used interchangeably, they mean different things in practice.

Uptime is—the server is either responding, or it isn't. It measures whether your infrastructure is running.

Availability measures whether real users can successfully use your site. A server can be "up" (returning HTTP 200) while a broken checkout flow, failed database query, or degraded CDN makes it functionally unavailable to users.

How do I calculate the availability percentage from monitoring data?

The standard formula:

Availability % = ((Total Time − Downtime) ÷ Total Time) × 100

Example: In a 30-day month (43,200 minutes), if your site was down for 43 minutes:

((43,200 − 43) ÷ 43,200) × 100 = 99.90% availability.

Read our knowledge base to understand more about it.

Start monitoring in 30 seconds

Join more than 13,000 customers who trust Site24x7 to monitor their websites, servers, and cloud infrastructure—24/7, from more than 130 locations worldwide.