Call Home enabled devices using the direct HTTP(S) transport and the optional Transport Gateway proxy server communicate with Cisco's Smart Call Home at this address: https://tools.cisco.com/its/service/oddce/services/DDCEService.
When configuring outbound rules in your firewall to allow Call Home traffic, please allow both the primary and secondary sites for Smart Call Home.
tools1.cisco.com 72.163.4.38
tools2.cisco.com 173.37.145.8
