Uptime checks will make regular requests to a website, an API endpoint, or a TCP service and alert you if it doesn’t respond correctly.
Worldwide servers
Uptime checks are run from 5 servers worldwide. Downtime is verified from all other servers and reported if there is agreement.
Allowing our servers
If you need to need to add our check servers to your allowlist (whitelist) then there are a couple of ways you can do that:
- Allow the request based on the string
sitesurewhich will always appear in theUser-Agentheader- Allow the request based on the
bots.sitesure.nethostname (You can retrieve the IP addresses viaAandAAAADNS queries)- If you must use IP addresses manually, then use the list below (least preferred option as it won’t handle changes to our IP addresses)
| Server Location | IPv4 address | IPv6 address |
|---|---|---|
 Amsterdam, Netherlands |
140.82.56.89 | 2a05:f480:1400:2fac:5400:4ff:fe70:625 |
 Bangalore, India |
139.84.130.173 | 2401:c080:3000:2047:5400:4ff:fe53:e40b |
 Johnnesburg, South Africa |
139.84.230.85 | 2a05:f480:3000:2ca4:5400:4ff:fe53:da98 |
 Los Angeles, United States |
45.32.77.136 | 2001:19f0:6001:615:5400:4ff:fe70:5b0 |
 Melbourne, Australia |
67.219.98.181 | 2401:c080:2000:2e93:5400:4ff:fe53:db67 |