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Degraded Performance
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Maintenance
Scheduled Maintenance
Services | Operator Services | Application Maintenance | PCRSDI-12318 Aug 4, 2026 05:00-13:00 UTC
Services :: DI SMS 365 (SMSX)
PCR Number :: PCRSDI-12318
Start Date and Time (GMT):: 4 August 2026 5:00 Hrs.
End Date and Time (GMT):: 4 August 2026 13:00 Hrs.
Impact
Mobile Terminating (MT) Traffic : No impact
Mobile Originated (MO) Traffic : No impact
DR Notification : No Impact
Report Manager Access : Potential Impact
Description:
Digital Interconnect has scheduled a planned maintenance to carry out activities on the internal application and systems.
If you experience any issues during this maintenance , please contact the Operator Service NOC immediately at operatorservices.noc@sinch.com or +1 470.300.8394 (select ‘Support’ from the menu, option 2 for Digital Interconnect and then option 1) and reference this notification.
Posted on Jul 28, 2026 - 15:59 UTC
PCR Number :: PCRSDI-12318
Start Date and Time (GMT):: 4 August 2026 5:00 Hrs.
End Date and Time (GMT):: 4 August 2026 13:00 Hrs.
Impact
Mobile Terminating (MT) Traffic : No impact
Mobile Originated (MO) Traffic : No impact
DR Notification : No Impact
Report Manager Access : Potential Impact
Description:
Digital Interconnect has scheduled a planned maintenance to carry out activities on the internal application and systems.
If you experience any issues during this maintenance , please contact the Operator Service NOC immediately at operatorservices.noc@sinch.com or +1 470.300.8394 (select ‘Support’ from the menu, option 2 for Digital Interconnect and then option 1) and reference this notification.
Posted on Jul 28, 2026 - 15:59 UTC
Sinch Maintenance - Numbers Aug 4, 2026 06:00-09:00 UTC
We are writing to inform you that as part of our continuous efforts to improve the performance and reliability of our platform, we will be performing a maintenance on our dashboard database between 6:00 and 9:00 UTC on August 4th.
Maintenance Start Time: August 4th 2026, 6:00 UTC
Maintenance End Time: August 4th 2026, 9:00 UTC
Impact: Customers may experience a slight increase in latency of Dashboard functionality - Short Code pages throughout the maintenance window, and a brief downtime of about 10 seconds as the database switches over to the secondary database.
We appreciate your patience and apologise for any inconvenience experienced during this maintenance period. If for any reason the maintenance is extended or cancelled, we will advise you accordingly.
Please contact support@sinch.com should you require further information or assistance.
Posted on Jul 16, 2026 - 16:07 UTC
Maintenance Start Time: August 4th 2026, 6:00 UTC
Maintenance End Time: August 4th 2026, 9:00 UTC
Impact: Customers may experience a slight increase in latency of Dashboard functionality - Short Code pages throughout the maintenance window, and a brief downtime of about 10 seconds as the database switches over to the secondary database.
We appreciate your patience and apologise for any inconvenience experienced during this maintenance period. If for any reason the maintenance is extended or cancelled, we will advise you accordingly.
Please contact support@sinch.com should you require further information or assistance.
Posted on Jul 16, 2026 - 16:07 UTC
Planned Maintenance – EU3 Network Hub Aug 13, 2026 02:00-05:00 UTC
Dear Client,
We are reaching out to inform you that as part of our continuous efforts to improve the performance and reliability of our services, we will be performing maintenance at our EU3 network hub on the scheduled time window below.
Type: Network Maintenance
Affected Site: EU3 Network Hub
Maintenance start time: 2026-08-13 02:00 UTC
Maintenance end time: 2026-08-13 05:00 UTC
Impact: Customers may experience multiple brief connectivity issues during the duration of this maintenance towards the impacted endpoints listed below.
Impacted endpoints:
eu3.smpp.api.sinch.com
eu3.httpsms.api.sinch.com
eu3.httplookup.api.sinch.com
To avoid connectivity issues we recommend connecting to the below endpoints during the duration of this maintenance.
Available endpoints:
eu1.smpp.api.sinch.com
eu1.httpsms.api.sinch.com
eu1.httplookup.api.sinch.com
If for any reason the maintenance is extended or cancelled we will advise you accordingly.
Please contact support@sinch.com should you require further information or assistance.
Posted on Jul 24, 2026 - 15:19 UTC
We are reaching out to inform you that as part of our continuous efforts to improve the performance and reliability of our services, we will be performing maintenance at our EU3 network hub on the scheduled time window below.
Type: Network Maintenance
Affected Site: EU3 Network Hub
Maintenance start time: 2026-08-13 02:00 UTC
Maintenance end time: 2026-08-13 05:00 UTC
Impact: Customers may experience multiple brief connectivity issues during the duration of this maintenance towards the impacted endpoints listed below.
Impacted endpoints:
eu3.smpp.api.sinch.com
eu3.httpsms.api.sinch.com
eu3.httplookup.api.sinch.com
To avoid connectivity issues we recommend connecting to the below endpoints during the duration of this maintenance.
Available endpoints:
eu1.smpp.api.sinch.com
eu1.httpsms.api.sinch.com
eu1.httplookup.api.sinch.com
If for any reason the maintenance is extended or cancelled we will advise you accordingly.
Please contact support@sinch.com should you require further information or assistance.
Posted on Jul 24, 2026 - 15:19 UTC
Sinch Internal Maintenance - MMS Aug 13, 2026 08:00-10:30 UTC
We are writing to inform you that as part of our continuous efforts to improve the performance and reliability of our platform, we will be performing a scheduled maintenance on MMS platform at the times specified below.
Type: Maintenance - MMS
Start Time: 2026-08-13 08:00 UTC
End Time: 2026-08-13 10:30 UTC
Impact MMS: MMS US, MMS AU, MMS CA. Messages will be Queued and will be processed post upgrade. We expect intermittent delays during the maintenance window.
We appreciate your patience and apologize for any inconvenience experienced during this maintenance period. If for any reason the maintenance is extended or cancelled, we will advise you accordingly.
Please contact support@sinch.com should you require further information or assistance.
Posted on Jul 30, 2026 - 16:32 UTC
Type: Maintenance - MMS
Start Time: 2026-08-13 08:00 UTC
End Time: 2026-08-13 10:30 UTC
Impact MMS: MMS US, MMS AU, MMS CA. Messages will be Queued and will be processed post upgrade. We expect intermittent delays during the maintenance window.
We appreciate your patience and apologize for any inconvenience experienced during this maintenance period. If for any reason the maintenance is extended or cancelled, we will advise you accordingly.
Please contact support@sinch.com should you require further information or assistance.
Posted on Jul 30, 2026 - 16:32 UTC
Sinch Internal Maintenance - MMS Aug 20, 2026 08:00-10:30 UTC
We are writing to inform you that as part of our continuous efforts to improve the performance and reliability of our platform, we will be performing a scheduled maintenance on MMS platform at the times specified below.
Type: Maintenance - MMS
Start Time: 2026-08-20 08:00 UTC
End Time: 2026-08-20 10:30 UTC
Impact MMS: MMS US, MMS AU, MMS CA. Customers may experience intermittent delays during the maintenance window due to queued messages. All queued messages will be processed after the upgrade.
We appreciate your patience and apologize for any inconvenience experienced during this maintenance period. If for any reason the maintenance is extended or cancelled, we will advise you accordingly.
Please contact support@sinch.com should you require further information or assistance.
Posted on Jul 30, 2026 - 16:32 UTC
Type: Maintenance - MMS
Start Time: 2026-08-20 08:00 UTC
End Time: 2026-08-20 10:30 UTC
Impact MMS: MMS US, MMS AU, MMS CA. Customers may experience intermittent delays during the maintenance window due to queued messages. All queued messages will be processed after the upgrade.
We appreciate your patience and apologize for any inconvenience experienced during this maintenance period. If for any reason the maintenance is extended or cancelled, we will advise you accordingly.
Please contact support@sinch.com should you require further information or assistance.
Posted on Jul 30, 2026 - 16:32 UTC
Sinch Internal Maintenance - MMS Aug 27, 2026 08:00-10:30 UTC
We are writing to inform you that as part of our continuous efforts to improve the performance and reliability of our platform, we will be performing a scheduled maintenance on MMS platform at the times specified below.
Type: Maintenance - MMS
Start Time: 2026-08-27 08:00 UTC
End Time: 2026-08-27 10:30 UTC
Impact MMS: MMS US, MMS AU, MMS CA. Customers may experience intermittent delays during the maintenance window due to queued messages. All queued messages will be processed after the upgrade.
We appreciate your patience and apologize for any inconvenience experienced during this maintenance period. If for any reason the maintenance is extended or cancelled, we will advise you accordingly.
Please contact support@sinch.com should you require further information or assistance.
Posted on Jul 30, 2026 - 16:32 UTC
Type: Maintenance - MMS
Start Time: 2026-08-27 08:00 UTC
End Time: 2026-08-27 10:30 UTC
Impact MMS: MMS US, MMS AU, MMS CA. Customers may experience intermittent delays during the maintenance window due to queued messages. All queued messages will be processed after the upgrade.
We appreciate your patience and apologize for any inconvenience experienced during this maintenance period. If for any reason the maintenance is extended or cancelled, we will advise you accordingly.
Please contact support@sinch.com should you require further information or assistance.
Posted on Jul 30, 2026 - 16:32 UTC
Service Announcement & Maintenance: New SMSC Site & Whitelisting Requirements - US Region Oct 1, 2026 07:00-08:00 UTC
As part of our commitment to platform reliability, security, and scalability, Sinch is adding a brand-new, high-efficiency site to our core SMSC billing and messaging routing engine product. This site expansion introduces a next-generation, high-performance architecture to significantly increase our regional capacity, improve overall platform stability, and ensure robust message processing.
New Regional Connection Endpoints that are planned to go live 2026-10-01 during the target window:
US SMPP: us6.smpp.api.sinch.com:
US HTTP SMS: us6.httpsms.api.sinch.com
US Lookup API: us6.httplookup.api.sinch.com
Type: Service Announcement & Maintenance
Maintenance start time: 2026-10-01 07:00 UTC
Maintenance end time: 2026-10-01 08:00 UTC
Action Required: Firewall Whitelisting
To ensure uninterrupted message delivery as we scale our traffic to include this new site we request that you update your firewall settings.
Affected API Endpoint:
(This change only affects customers connecting to either of the following US endpoints)
US SMPP: us1.smpp.api.sinch.com and/or us7.smpp.api.sinch.com
US HTTP SMS: us1.httpsms.api.sinch.com and/or us7.httpsms.api.sinch.com
US Lookup API: us1.httplookup.api.sinch.com and/or us7.httplookup.api.sinch.com
IP Addresses to Whitelist
Please coordinate with your network security team to whitelist these target IP addresses:
35.95.194.74
44.239.11.143
52.32.122.205
If for any reason the maintenance is extended, cancelled, or postponed, we will advise you accordingly.
Please contact support@sinch.com should you require further information or assistance.
Posted on Jul 10, 2026 - 08:37 UTC
New Regional Connection Endpoints that are planned to go live 2026-10-01 during the target window:
US SMPP: us6.smpp.api.sinch.com:
US HTTP SMS: us6.httpsms.api.sinch.com
US Lookup API: us6.httplookup.api.sinch.com
Type: Service Announcement & Maintenance
Maintenance start time: 2026-10-01 07:00 UTC
Maintenance end time: 2026-10-01 08:00 UTC
Action Required: Firewall Whitelisting
To ensure uninterrupted message delivery as we scale our traffic to include this new site we request that you update your firewall settings.
Affected API Endpoint:
(This change only affects customers connecting to either of the following US endpoints)
US SMPP: us1.smpp.api.sinch.com and/or us7.smpp.api.sinch.com
US HTTP SMS: us1.httpsms.api.sinch.com and/or us7.httpsms.api.sinch.com
US Lookup API: us1.httplookup.api.sinch.com and/or us7.httplookup.api.sinch.com
IP Addresses to Whitelist
Please coordinate with your network security team to whitelist these target IP addresses:
35.95.194.74
44.239.11.143
52.32.122.205
If for any reason the maintenance is extended, cancelled, or postponed, we will advise you accordingly.
Please contact support@sinch.com should you require further information or assistance.
Posted on Jul 10, 2026 - 08:37 UTC
