22.214.171.124. What level of stability do you need?
A new Fedora release is made approximately every four to nine months, and only the current and next-to-current releases are actively maintained by the project (beyond this time frame, security and bug fixes are supplied by the Fedora Legacy project).
If you need a platform with long-term stability, consider using Red Hat Enterprise Linux (RHEL) instead (or CentOS, which is a nonaffiliated project based on RHEL that does not have commercial support). Each RHEL release is supported with updates and security enhancements for a full seven years.
Because Fedora serves as a testbed for new technologies, it can be used to gain a preview of the new technologies that will be incorporated into future Red Hat Enterprise Linux releases.