Run into a weird problems. My worker is currently doing a fetch() for me to get certain resources. T

Run into a weird problems. My worker is currently doing a fetch() for me to get certain resources. The resource site blocks certain IP ranges which is understandable. When I call my worker's endpoint (deployed) which would then fetch the resource for me from my dev machine, it works. But once I push the code to a server which then calls the worker's endpoint, it is blocked. So does the worker's IP somehow derived from the caller of the worker? Or I am calling from 2 different CF datacenter and one of it is blocked by the site?
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