# Sinch Contact Pro Certificate renewal - CUSTOMER ACTION REQUIRED - AF

- Provider: [Sinch](https://down.guide/providers/sinch)
- Confidence: Confirmed
- Impact: Maintenance
- lasted 1h 2m
- started 2026-11-08 06:00 UTC
- Contact Pro - AF (South Africa)
- us
- id: DWN-03c66b3c82
- Official page: https://stspg.io/404r5cd3pjk9

## Updates from Sinch
### 2026-10-08 09:43 UTC: scheduled
Dear Customer,
The Sinch Contact Pro certificate \*.cc.sinch.com will be renewed during Sunday November 8th, 2026.
Start time: 2026-11-8 (Sunday) 6 AM UTC
End time: 2026-11-8 (Sunday) 7 AM UTC 
During the maintenance window, all voice channels will experience a short disruption, up to 10 minutes.
Customer Action: 
The certificate authority and the issuer chain will change to Amazon. 
To avoid potential connection issues, Sinch strongly recommends verifying the certificate trust relationship in advance.
How to verify the certificate trust relationship:
Contact Pro UIs (e.g., Communication Panel):
Visit https://certificatetest.cc.sinch.com/, Ensure that no security warnings appear when connecting.
Integrations using cc.sinch.com (e.g., CRM integrations):
Check that your system trusts the new issuer chain. You can also test connectivity using URL https://certificatetest.cc.sinch.com/ .
SIP trunks:
Review your configured trusted issuers to ensure the new issuer chain is accepted.
New certificate details:
CN = cc.sinch.com (\*.cc.sinch.com)
Serial: 0A:22:B4:2A:71:41:AF:02:70:2B:81:4A:CC:70:24:EA 
Issuer: CN = Amazon RSA 2048 M04
CN = Amazon RSA 2048 M04 
Serial: 07:73:12:4F:2A:95:2E:3E:D1:8A:58:BD:B8:5D:1B:C0:CE:5F:27 
Issuer: Amazon Root CA 1 
CN = Amazon Root CA 1 
Serial: 06:6C:9F:CF:99:BF:8C:0A:39:E2:F0:78:8A:43:E6:96:36:5B:CA 
Issuer: Amazon Root CA 1 
Certificates are available for download here:
https://clxgroup.sharepoint.com/:f:/s/EXTSinchSharing1/IgC-iGB\_R7TkSJzUCFHnT7ulAcom1Bo2RLwLJm9XrAmregQ?e=HNH6tC
For additional information or questions, please contact us via the Sinch Enterprise Support portal:
https://sinchenterprise.atlassian.net/servicedesk/customer/portal/1181 
Best regards,
Sinch Contact Pro Team

### 2026-11-08 05:00 UTC: scheduled
Maintenance will begin as scheduled in 60 minutes.

### 2026-11-08 06:00 UTC: in\_progress
Scheduled maintenance is currently in progress. We will provide updates as necessary.

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