Under the Standard Plan, if you exceed your allotted free bandwidth quota before the end of the month (and you have not purchased PAYG quota), the CDN will be bypassed automatically and visitor requests will be directed to your domain’s origin server. When the quota refreshes at the beginning of the next month CDN service will be restored automatically.
To maintain uninterrupted service, you can purchase additional pay-as-you-go (PAYG) quota with credits. Learn more about credits in our Knowledgebase.
If you are on the Free Plan, bandwidth is unlimited and will never run out.