Connections to docker.io and registry.hub.docker.com being dropped on some NAT IPs

For the past two weeks connections are being dropped for some of the NAT IPs while trying to pull images from docker.io (104.18.124.25) and registry.hub.docker.com (104.18.125.25). As far as I’m aware those are systems which are administered and protected by Cloudflare. Details below:

NAT IP: 129.41.46.0/3/4
unable to pull image: Error writing blob: error storing blob to file “/var/tmp/storage986228360/1”: read tcp x.x.x.x:60080->104.18.125.25:443: read: connection reset by peer

NAT IP: 129.41.46.1/2
Status: Downloaded newer image for ibmcom/ibm-common-service-catalog:latest
docker.io/ibmcom/ibm-common-service-catalog:latest

This was working perfectly fine about two weeks ago and suddenly just stopped. Can someone please assist in resolving this? I don’t know if this will need adding NAT IPs (129.41.46.0-15) to allow-list or is there any other process but I would greatly appreciate your support. Thanks in advance.

Regards,
Wojtek

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