What is Amazon Route 53 Health Check Service?
An AWS customer creates a Route 53 health check for a particular endpoint. Route 53 then tests the configured address, port, and protocol with HTTP, HTTPS, or TCP probes. The resulting health state can control DNS failover and can be used for CloudWatch alarms.
The selected interval applies to every health checker, not to the service as a whole. AWS offers 10-second and 30-second intervals, and checkers in different locations do not coordinate their timing. That is why several probes may land close together even though no single checker is running that often.
HTTP and HTTPS checks request the configured resource path and treat 2xx or 3xx as a successful status. A string-matching check also searches near the beginning of the body for the configured text. AWS publishes the health-checker ranges and managed prefix lists that firewalls can allow. It does not publish a robots.txt product token for these direct probes.
Route 53 is measuring reachability, not collecting a site's content. Blocking its requests can mark a healthy application as unhealthy and may change where DNS sends traffic. The service has no documented connection to AI search or model training.
