It's needed to allowlist the CloudHub IP ranges at your organization network to avoid CloudHub APIs being blocked
In particular CloudHub does not assign IPs for the workers by itself, as it is based on Amazon's IP ranges. You will find additional information about that on the following link:
Such link will also drive you to the Amazon documentation, and eventually to the complete list of Amazon's IP ranges.
You may filter a little more by selecting the region of your organization, which can be obtained at "Access Management", and if still not clear on what to filter, look at the regions table at:
Bear in mind that, since the IP ranges are pretty wide and they can change without any notification, this is not a recommended way to filter. There're other different approaches that could be adopted as a solution. One of them is setting static IPs for your CloudHub applications and sort everything out with static IPs which can be later whitelisted. Find more information at:
CloudHub Static IP Frequently Asked Questions001117041

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