The Sinch Contact Pro certificate *.cc.sinch.com will be renewed on Sunday, November 16, 2025.
Start time: 2025-11-16 (Sunday) 8 AM UTC End time: 2025-11-16 (Sunday) 9 AM UTC
During the maintenance window, all voice channels will experience a short disruption, up to 10 minutes.
Customer Action: Although the certificate authority remains Sectigo, the issuer chain will change. To avoid potential connection issues, Sinch strongly recommends verifying the certificate trust relationship in advance.
How to verify the certificate trust relationship:
1. Contact Pro UIs (e.g., Communication Panel): Visit https://certificatetest.cc.sinch.com/, Ensure that no security warnings appear when connecting.
2. Integrations using cc.sinch.com (e.g., CRM integrations): Check that your system trusts the issuer chain. You can also test connectivity using URL https://certificatetest.cc.sinch.com/ .
3. SIP trunks: Review your configured trusted issuers to ensure the new certificate chain is accepted.
New certificate details:
CN = *.cc.sinch.com Serial: 259647e441a89f63abf6f067a0cef5d6 Issuer: CN = Sectigo Public Server Authentication CA OV R36
CN = Sectigo Public Server Authentication CA OV R36 Serial: 2c1a3c76e943ddddff191b31890aed71 Issuer: Sectigo Public Server Authentication Root R46
CN = Sectigo Public Server Authentication Root R46 Serial: 758dfd8bae7c0700faa925a7e1c7ad14 Issuer: Sectigo Public Server Authentication Root R46