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$ curl --location --include --request GET --compressed https://ohdear.app \ -H "Accept-Encoding: gzip, deflate" \ -H "User-Agent: OhDear.app (+https://ohdear.app/docs/features/uptime-monitoring)" \ -H "Accept: */*"
When your site goes down, customers get annoyed, revenue drops and your brand reputation takes a hit. Oh Dear is packed full of features to help you ensure your website is up around-the-clock, including global uptime monitoring and smart notifications.
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Response time spikes often precede complete outages. Uptime monitoring catches these early warning signs by tracking response times alongside availability, allowing you to investigate and resolve issues before they impact your users.
Performance degradation can reveal server overload, database issues, or infrastructure problems that might otherwise go unnoticed until they become critical downtime events.
Monitor both availability and performance thresholds to get comprehensive early warnings. When response times exceed your configured limits, you know to investigate before complete failure occurs.
urlxyz.com has recovered after 2m. full report: https://ohdear.app/monitors/83/checks/411
urlxyz.com seems down! Error: HTTP/500 Downtown verified from Paris, France and Frankfurt
Pushover has been successfully enabled. We'll notify you when something goes wrong.
urlxyz.com has recovered after 2m. full report: https:/ohdear.app/monitors/83/checks/411
Text messages for urlxyz.com have been successfully enabled. We'll notify you when something goes wrong.
$_TOKEN="your API token" $ curl -X GET "https://notifyservicexyz.com/api/alert/urlxyzcom" \ -H "Authorization: Bearer $_TOKEN" \ -H "Accept: application/json" \ -H "Content-Type: application/json"
urlxyz.com has recovered after 2m. full report: https://app.opsgenie.com/monitors/83/checks/411
Opsgenie has been successfully enabled. We'll notify you when something goes wrong.
urlxyz.com has recovered after 2m. full report: https://pagerduty.com/monitors/83/checks/411
PagerDuty has been successfully enabled within Oh Dear. Notifications are enabled.
Receive our notifications on your preferred platform. Via email, SMS, Slack, Discord, Opsgenie, PagerDuty, Microsoft Teams, Pushover, webhooks,… we can notify you wherever your team is active.
Take notifications to the next level: only notify who needs notifying by assigning responsibilities to different team members.
Oh Dear uses the full potential of each platform's integrations so that notifications become smart and actionable: e.g. you can rerun the uptime check or snooze followup alerts without ever leaving Slack!
Monitor your websites and internal systems safely by restricting access to Oh Dear's fixed IP addresses only. No need to expose systems publicly for monitoring.
Configure your firewalls, security groups, and access control lists to allow HTTP/HTTPS traffic exclusively from Oh Dear's monitoring servers, maintaining your security posture while ensuring comprehensive uptime monitoring coverage.
Our static IP addresses don't change often, providing stable security rules that won't break over time. Monitor internal applications, staging environments, and critical infrastructure without creating security vulnerabilities.
Postgres service is publicly accessible. full report: https://app.opsgenie.com/monitors/83/checks/411
Redis service is publicly accessible. verified from Paris, France and Frankfurt
Services monitoring has been successfully enabled. We'll notify you when something goes wrong.
Monitor services that should remain hidden for compliance and security reasons. Get immediate alerts when internal systems, staging environments, or sensitive infrastructure accidentally become publicly accessible via HTTP/HTTPS.
Compliance violations often occur when supposedly isolated systems become reachable due to configuration errors, network changes, or security misconfigurations that expose internal infrastructure.
Set up reverse monitoring to ensure your sensitive systems maintain their intended isolation and receive instant notifications if they become unexpectedly accessible from external networks.
Start a no-strings-attached 30-day free trial. You're all set in less than a minute. (No credit card needed.)
Not convinced yet? Need help? Get in touch via [email protected].
You don't need to be computer savvy to set up our tool. But if you are, we're happy to explain exactly how it works and how you can customize Oh Dear to your specific needs.
Each site is monitored from a primary location and verified from a secondary location. You can choose your primary location from within the Oh Dear dashboard.
If the primary location reports an error to Oh Dear, the secondary location is used to verify the problem. We'll only trigger an alert if both the primary and the secondary checks report the site as down. This prevents any false alerts.
If we fail to receive an HTTP/200 response within a reasonable timeframe, we mark your site as down. When we see website failures for 2 minutes in a row, we send out notifications so you can intervene. This prevents monitoring flaps and false positives.
You can change the timing threshold in your settings. Prefer to get alerted after 5 minutes instead of 2? Not a problem. Our downtime reports give you all the details to quickly verify and troubleshoot any alert.
In our report you'll find useful commands to replicate our monitoring, this allows to you see exactly what we see.
Is just monitoring a status code not enough? We can verify the existence of a piece of text on the page too (a so called "checkstring"). If we receive an HTTP/200, but the checkstring is missing in the source code, we'll mark the site as down.
By default we monitor using a GET HTTP call, but you can also change this to POST, PUT or PATCH.
Each method can have its own form payload. This allows you to simulate a form submission and monitor search results, contact forms, API endpoints, ...
You could even perform a website login through a POST call and verify the account page loads properly.
Want to get into the nitty gritty details of our monitoring? Have a look at our documentation.
SSL certificates are essential in website security. We check all your certificate expiration dates & alert any change we detect.
We provide highly detailed performance monitoring and insights. We'll notify you as soon as we detect your website is getting slow.
Get notified instantly as soon as we detect an issue or an important change. Enable any channel you use, you're in full control.
Your cron jobs (Linux) and scheduled tasks (Windows) are the heart of your data processing. We can monitor every single one of them.
We crawl and index your entire website, just like Google. As soon as we detect a broken link on your site we will let you know.
Receive a notification whenever your DNS records are modified - intentionally or maliciously - so you can act and verify faster.
A lot can go wrong inside your app and server. Disk space may fill up, or the database may go down. We'll notify you when something is off.
In times of crisis, a public status page allows you to communicate to your clients. We'll host your status page so it's always available.
We can check how long your domain is still registered. If your renewal date is close, we'll notify you. This will avoid you losing your domain.
We track the speed & performance of your website over time. If we detect your website is suddenly slower, we'll let you know.
Elevate your SEO strategy and optimize your site. We analyse your sitemap health and check every URL for broken links.
Reach out to us with any questions, suggestions or bugs.
We're available on all weekdays and usually reply within one working day.
No 3rd party tracking, no invasion of your privacy - this site is tracking-cookie free.