Monitoring

Fetching the checker IP list

The source IP addresses Tenium checks run from, and how to fetch them programmatically.

All checks originate from a fixed set of IPv4 and IPv6 addresses, one small block per region. The human-readable list is at /checker-ips. The machine-readable list is:

GET https://tenium.app/checker-ips.json

{
  "updated": "2026-11-07",
  "regions": {
    "ams": { "name": "Amsterdam", "country": "NL", "ipv4": ["164.92.217.216"], "ipv6": [] }
  }
}

Change policy

We announce additions at least 14 days ahead in the changelog and by email to account owners. Removed addresses stop sending checks on the announced date but stay listed for a further 14 days.

Prefer the User-Agent plus secret header method for WAF allow-listing where you can; IP lists go stale.