They throttle you if they detect abuse, this was a while ago though and it's by zone
They throttle you if they detect abuse, this was a while ago though and it's by zone

A Cloudflare engineer decided to apply a throttling mechanism to prevent the zone from pulling so much traffic from their origin. Let's be very clear on this action: Cloudflare does not have an established process to throttle customers that consume large amounts of bandwidth, and does not intend to have one. This remediation was a mistake, it was not sanctioned, and we deeply regret it.
r2-bucket.example.com IN CNAME <r2-set record>
# then you're doing
example.com. IN A r2-bucket.example.com
# or
some-other.zone. IN A r2-bucket.example.comPOST /client/v4/accounts/${account_id}/r2/buckets/${bucket}/custom_domains
{
domain: ${domain}
zoneId: ${zone_id}
zoneName: ${zone_name}
}<?xml version="1.0" encoding="UTF-8"?>
<Error>
<Code>InvalidArgument</Code>
<Message>Invalid Argument: Authorization</Message>
</Error>