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DATA CENTER UPDATES On March 17, 2025 our data center performed updates that may have affected the interaction between Stacks and certain third-party services, including Identity Service Providers (IDPs) and Integrated Library Systems (ILS) if your organization's security policy requires the Stacks IP address to be whitelisted on those services. To ensure continued functionality, please contact EBSCO support to obtain the new IP address for your site and update your third-party application security settings. We appreciate your understanding and cooperation during this period of change as our data center teams continue to keep your websites optimally secure and performant.