Know When Your
Website Goes Down.

ismysiteup checks your websites around the clock and alerts you the moment something breaks — by email, Telegram, or WhatsApp.

What you get

Checks every 5 seconds

Pick any interval from 5 seconds to 12 hours.

Instant alerts

Get notified the moment a site goes down or comes back up.

Email notifications

Use our built-in email or connect your own SMTP server.

Telegram alerts

Get down/recovery messages straight to your chat.

WhatsApp alerts

Alerts via CallMeBot with your phone number and API key.

Response time charts

Track how fast your sites respond over time.

SSL monitoring

Get warned before your certificates expire.

Incident timeline

Full history of every outage and how long it lasted.

Server details

IP address, country, and hosting info at a glance.

Import & export

Move your monitors in or out with one-click JSON.

Manual checks

Run a check on any monitor instantly with one click.

Secure by default

All sensitive data is encrypted. Always.

Simple, transparent pricing

Start free, upgrade when you need more.

MonthlyYearly

Free

$0
  • 5 monitors
  • Check every 3min
  • Ad-supported
  • Email, Telegram & WhatsApp alerts
  • SSL monitoring

Starter

$2.99/mo
  • 10 monitors
  • Check every 2min
  • No ads
  • Email, Telegram & WhatsApp alerts
  • SSL monitoring

Pro

Popular
$4.99/mo
  • 20 monitors
  • Check every 30s
  • No ads
  • Email, Telegram & WhatsApp alerts
  • SSL monitoring

Premium

$9.99/mo
  • 30 monitors
  • Check every 5s
  • No ads
  • Email, Telegram & WhatsApp alerts
  • SSL monitoring

How it works

Three steps. Takes less than a minute.

1

Add your URLs

Paste any website address. Give it a name, pick a check interval, and you're done.

2

Set up alerts

Choose how you want to be notified — email, Telegram, WhatsApp, or all three.

3

Relax

We watch your sites 24/7 and tell you the second something breaks.

Stop finding out from your users.

Be the first to know when your website has a problem. Sign up in seconds.