JAMA Network sites were redesigned and relaunched on October 6th, 2016, at 3 p.m. ET. If your institution's authentication system uses a firewall/proxy server that contains specific entries for approved websites and their specific IP addresses, you do not need to update those entries to point to the new environment.
Below is a complete list of the old JAMA Network website IP addresses and the new Domain/Subdomains. Please note that site URLs have changed, yet the IP addresses remain the same.