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You can reopen and change your selection at any time. · 1.0.2
Free server and website monitoring in one uptime monitor: Check your website via HTTP/HTTPS, your server via ping, or your SSL certificate every 5, 15, 30, or 60 minutes. Get notified of every status change (offline, back online, certificate expiring soon) via email, Discord, Telegram, or Slack. Free and no account required: just confirm your email address.
Built by Luca Stanek
A VPS for your own projects, outside this tool.
3 check types
Website (HTTP), SSL certificate, or server availability (ping).
Up to 4 additional channels
Email is required. You can add as many additional email, Discord, Telegram, or Slack channels as you like.
No account required
Manage via a link in each email—on your personal Dashboard.
Guide
Seven steps from choosing a target to your first notification.
Step 1
Under “What would you like to monitor?”, select the check type: Website (HTTP/HTTPS), SSL certificate, or Server (Ping).
Step 2
Enter the URL, domain, or IP address, for example https://example.com, example.com, or 203.0.113.1.
Step 3
Choose how often to run checks: every 5, 15, 30, or 60 minutes.
Step 4
Enter your email address and add up to 4 more channels if needed (email, Discord, Telegram, or Slack). You can check Discord, Telegram, and Slack channels beforehand with “Test”.
Step 5
Complete the security check and click “Set up monitoring”.
Step 6
Click the confirmation link in the email you receive within 24 hours. Monitoring starts after that.
Step 7
You get a notification whenever the status changes (offline, back online, certificate expiring soon). Use the link in the email to change the interval and channels, pause the monitor, or delete it.
Why this tool
The key monitoring features at a glance.
Three check types
Monitor a website via HTTP/HTTPS, an SSL certificate via a TLS connection, or server availability via ping.
Intervals from 5 to 60 minutes
You choose whether checks run every 5, 15, 30, or 60 minutes and can change this later.
Email plus up to 4 channels
Add more email addresses, Discord, Telegram, or Slack alongside the required email address, and test them first.
SSL warning 14 days in advance
Certificates are considered critical 14 days before expiry, not just on the expiry date.
Protection against false alarms
An outage is reported only after two consecutive failed checks, so a brief interruption won’t trigger an alert.
No account required
Up to 5 monitors per email address, managed through a link in every notification email.
Check criteria
To avoid false alarms from brief interruptions, monitoring reports an outage only after two consecutive failed checks. Once the target is reachable again, you get an all-clear after the next successful check.
Offline if the status code is 500 or higher, there is no response after 10 seconds, a DNS or connection error occurs, or there are more than 5 redirects. 4xx responses, such as 404, count as reachable. Without http:// or https://, https:// is used.
Monitoring establishes a TLS connection, using port 443 by default. It alerts you if the connection fails, the certificate is not accepted as valid, has expired, or expires in less than 14 days.
The server receives an ICMP ping at its IP address or domain. If it does not respond within 5 seconds, it is considered unreachable.
Basics
Server monitoring automatically checks at regular intervals whether your server, website, or SSL certificate is working and alerts you if it isn’t. This tool checks availability from the outside: Does the website respond, can the server be reached by ping, and is the certificate valid? It does not measure CPU, RAM, or disk usage.
Monitoring checks continuously at your chosen interval and notifies you whenever the status changes. If you only need to know right now whether a site is offline, a certificate is valid, or a server responds, a one-time check is enough.
For game servers, VPS, or your homelab, use the ping check on the IP address or domain. Alerts can go straight to a Discord channel. Ping only shows whether the server responds, not whether the game service is running on its port.
Explore more
Check whether a website is online, slow, or offline: HTTP status, response time, and the cause of errors such as DNS issues, timeouts, TLS errors, or 5xx responses.
Built by Eric Mager
Look up a domain’s A, AAAA, MX, TXT, NS, CNAME, SOA and CAA records, plus Reverse DNS for any IP.
Built by Luca Stanek
Check an SSL/TLS certificate’s status, issuer, validity period, and expiration date at a glance.
Built by Sebastian Rademacher
Check whether specific ports are open on an IP or hostname—select a protocol or game instead of scanning all ports at once.
Built by Sebastian Rademacher
Measure ping, jitter, and packet loss to all Game Server locations and get a recommendation for the best one.
Built by Marvin Kluck
Convert uptime percentages into allowed downtime per day, week, month, quarter, and year, or calculate uptime from measured downtime, for SLA targets from 99% to 99.999%.
Built by Luca Stanek
FAQ
Quick answers about check intervals, outage criteria, SSL warnings, and notifications.
Yes, no account or time limit.
You pay nothing and don’t need an account. All you need is your email address, which you verify through a confirmation link; monitoring starts only after that. You can create up to 5 monitors per email address.
No, you manage it through a personal link.
Every notification email includes a link to your monitor. There you can change the check interval, add or remove channels, run an immediate check with “Check now,” or pause or delete the monitor.
Every 5, 15, 30, or 60 minutes.
You choose the interval during setup; the default is 5 minutes. You can change it anytime later using the link in the notification email.
For status codes of 500 or higher, timeouts, DNS errors, or connection errors.
The HTTP check treats status codes of 500 or higher, no response within 10 seconds, DNS and connection errors, and more than 5 redirects as an outage. 4xx responses, such as 404, count as reachable. An outage is reported only after two consecutive failed checks to avoid false alarms from brief interruptions.
Validity and expiration date, with a 14-day advance warning.
Monitoring establishes a TLS connection to your domain, checks whether the certificate is accepted as valid, and reads its expiration date. If it expires in less than 14 days, you get a warning so you have time to renew it. The default is port 443; use host:port to check another port.
Via ICMP ping with a 5-second timeout.
Your server receives an ICMP ping via its IP address or domain. If it does not respond within 5 seconds, the check fails. Ping only shows whether the server is reachable, not whether a game server or service is running on its port. If your server blocks ping but hosts a website, use the HTTP check instead.
Email, Discord, Telegram, and Slack.
Your email address is required. You can add up to 4 more channels: additional email addresses, Discord or Slack via webhook URL, and Telegram via bot token and chat ID. You can test Discord, Telegram, and Slack channels with “Test” before setting them up.
Yes, monitoring works regardless of your hosting provider.
Monitoring works with any publicly accessible IP address or domain, regardless of where your server or website is hosted. Private and internal addresses are rejected for security reasons.
Any more questions about your server?
Contact SupportDDoS protection included, full root access, cancel anytime — starting at just a few euros per month.
No setup. No risk. Online in seconds.
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© 2026 ZAP-Hosting GmbH
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