The PingRobot bot

What it does

PingRobot is an uptime monitoring service. Our users choose the URLs, ports and intervals they want watched; we then check them on a schedule and alert the user when a check fails.

• HTTP(S), keyword and API checks: one request to the configured URL, following redirects (unless the user expects a redirect status). The method is GET unless the user picked another one (HEAD, POST, PUT, PATCH or DELETE) with their own headers and body, usually for their own API. For keyword and API checks we read at most the first 512 KB of the response.
• SSL certificate checks: on HTTPS monitors, about once a day we open a TLS connection to read the certificate, then close it. No request is sent.
• DNS checks: we look the record up through Cloudflare's public DNS resolver; your server isn't contacted.
• Port checks: we open a TCP connection to the configured host and port and close it again. No data is sent.
• Frequency: once every 1 to 60 minutes per monitor, as configured by the user. When a check fails, we repeat it once from a second location to confirm.

We don't crawl links, submit forms, run JavaScript or load images and other assets.

How to recognise it

Checks run on Cloudflare's network, so they don't come from a fixed list of IP addresses. To allow them through a firewall or bot protection, match the user agent.

Stop or report checks

If you didn't expect these requests, for example if someone is monitoring a site you own without permission, or the checks cause you problems, email hello@pingrobot.io with the URL or host. We'll look into it and stop the checks where appropriate. Our terms only allow users to monitor services they own or are allowed to monitor.