How often do Fastly's IP ranges change?
We’re setting up a firewall whitelist for Fastly’s IP ranges. We plan to use the IP-whitelist-cron shell script to track the IP range changes, but our network admin would like to know if there is any frequency to these changes.
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Yes. First the API endpoint is updated, then we post an update on status.fastly.com, and finally after a little grace period we start using the new IP space.
The status page has an RSS feed, which also alerts you of maintenance and any network outages, so it's a good idea to put the feed somewhere you will see its updates. A lot of our customers add the feed to their ops channel on Slack, for instance.
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