Below is a list of IP addresses that ESP uses to crawl the RSS feeds added as Sources.
If you limit the IP addresses that can access your RSS feeds, you will need to whitelist these in order for the Sources to be checked and validated in ESP. Please note that the list is subject to change.
ESP uses these IP addresses for both RSS feed crawlers and notification callbacks, such as subscription callbacks and unsubscription callbacks, so it's important to allowlist these IPs for both functionalities.
Production US-dashboard (https://esp.piano.io/):
34.194.104.225
52.44.144.233
52.7.62.122
Production EU-dashboard (https://esp-eu.piano.io/):
18.198.132.114
3.126.229.24
18.198.198.3
Production AP-Dashboard (
https://esp-ap.piano.io/
) and Production AU-Dashboard (
https://esp-au.piano.io/
):
54.92.17.94
52.197.79.37
3.114.249.120
Sandbox (
https://sandbox-esp.piano.io/
):
18.213.197.249
54.88.217.248
18.204.232.59