Ziett Outage History

Started Jul 28, 2026, 12:06 PM UTC· resolved Aug 26, 2026, 10:55 AM UTC

1. monitoring Jul 28, 2026, 12:06 PM UTC

   We are currently experiencing a major disruption in SMS message delivery targeting Unitel subscribers due to a confirmed nationwide network incident on the operator's infrastructure. Operator Announcement Summary Unitel has officially issued a public notice confirming that their telecommunications network is currently experiencing technical instability affecting voice and data services nationwide. Their technical teams are actively working on resolving the issue and restoring normal operations. Current Platform Impact & Guidance • Unitel Destinations: Messages sent to Unitel numbers (+244 92x, 93x, 94x, 97x) via our SMS gateway are currently failing or encountering severe delivery delays due to the upstream operator outage. • Africell & Movicel Destinations: All outbound SMS messages targeting Africell and Movicel subscribers remain fully operational with normal delivery rates. Next Steps & Monitoring Our engineering team is closely monitoring the situation alongside our upstream carrier providers. We will conduct continuous connectivity and dispatch tests to verify service recovery as soon as Unitel restores network stability. A status update will be provided within 6 hours or as soon as significant progress is reported by Unitel.

2. resolved Aug 26, 2026, 10:55 AM UTC

   We are pleased to report that the major delivery disruption affecting SMS messages targeted at Unitel subscribers has been fully resolved. As of today, all outbound SMS traffic to Unitel destinations (+244 92x, 93x, 94x, 97x) is operating at full capacity with normal delivery speeds and success rates. Resolution & Monitoring Details Our SRE and network engineering teams conducted extensive end-to-end dispatch tests and verified that upstream connectivity with Unitel's infrastructure has been stabilized. • Unitel Destinations: Fully operational. Message queues have been cleared. • Africell & Movicel Destinations: Remained 100% operational throughout the incident window. Next Steps We will continue to actively monitor latency and delivery success rates across all carrier links to ensure ongoing stability. No further action is required from client applications. Thank you for your patience and support during this service restoration period.

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Started Jul 22, 2026, 09:34 PM UTC· resolved Jul 23, 2026, 06:11 PM UTC

1. investigating Jul 22, 2026, 09:34 PM UTC

   We are currently experiencing a complete service outage with our Unitel network provider. At this time, the provider is entirely offline. Furthermore, our monitoring indicates that the Unitel network itself is currently unable to receive incoming SMS traffic, meaning messages routed through alternative providers are also failing to reach Unitel recipients. Please be aware that the Ziett platform itself remains fully operational. Our systems are actively processing and dispatching SMS traffic using our Africell provider. Impact: • Unitel: While Ziett continues to accept messages destined for Unitel numbers, the vast majority of these messages are currently not being delivered to the end-users due to the destination network's unreachability. • Africell & Movicel: Deliveries to Africell and Movicel networks are completely unaffected and are arriving normally without any difficulties. Next Steps: We have not yet received an official statement from Unitel regarding the root cause or an estimated time for resolution. Our engineering team will continue to actively monitor the situation and run automated connectivity and delivery tests until the network stabilizes and normal service is restored. Next Update: We will provide another update regarding this incident within 12 hours, or sooner if there are significant developments.

2. resolved Jul 23, 2026, 06:11 PM UTC

   The SMS delivery outage affecting the Unitel network has been fully resolved. While we have not received an official statement or Root Cause Analysis (RCA) from the network provider regarding the downtime, our engineering team has conducted extensive automated connectivity and delivery tests. All internal metrics confirm that SMS traffic to Unitel destinations is now flowing normally and successfully reaching end-users. Impact: • Unitel: Service has been fully restored. The Ziett platform is successfully dispatching messages, and our systems are receiving normal delivery receipts from the destination network. • Africell & Movicel: Deliveries remain completely unaffected and continue to operate normally. Next Steps: This incident is now officially closed. We will resume our standard 24/7 network monitoring. Thank you for your patience and understanding during this service interruption.

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Started Apr 27, 2026, 12:01 PM UTC· resolved Apr 29, 2026, 10:18 PM UTC

1. investigating Apr 27, 2026, 12:01 PM UTC

   Investigating - We are currently investigating an issue affecting SMS delivery specifically for messages originated from the Africell network destined for Unitel subscribers. Our monitoring systems indicate that while our infrastructure is healthy, there is a disruption in the interconnectivity between these two carriers. Current Service Status: • Africell ➔ Africell: Functional (OK) • Unitel ➔ Unitel: Functional (OK) • Unitel ➔ Africell: Functional (OK) • Africell ➔ Unitel: Service Disruption (Failures) Note on System Stability: Please be advised that our internal systems remain fully operational. All traffic utilizing the Unitel network to reach Unitel recipients continues to be processed and delivered without delay or interference. We are in contact with the carriers to identify the root cause and restore full connectivity. Next Update: We will provide another status update within 90 minutes.

2. investigating Apr 27, 2026, 05:08 PM UTC

   Investigating – We have been actively attempting to engage with Africell's technical support team for the past several hours. However, we have yet to receive a formal acknowledgment or an Estimated Time of Restoration (ETA) regarding the interconnect link to Unitel. Our real-time monitoring confirms that the service status remains as previously reported: • Africell ➔ Unitel: Service Disruption (Messages failing to reach destination). • Unitel ➔ Unitel: Fully Operational. Our system continues to process all traffic via the Unitel network without any issues. • Africell ➔ Africell: Fully Operational. We are continuing to escalate this matter through all available carrier channels. Given the lack of feedback from the operator, we are extending our communication window to allow more time for their technical teams to respond and for our own further escalations. Next Update: We will provide our next update in 16 hours, or sooner if we receive a definitive response from the carrier.

3. monitoring Apr 28, 2026, 12:30 PM UTC

   Signs of Recovery and Backlog Processing We are observing initial signs of recovery regarding the SMS interconnectivity between Africell and Unitel. Our monitoring systems have detected that messages queued from the previous 24 hours are starting to be delivered to destination handsets. This suggests that the carrier's technical teams are working on a resolution, although we have not yet received a formal response or confirmation from Africell support. Current Routing Strategy: To ensure maximum reliability, we are keeping the direct Africell ➔ Unitel route disabledwithin the Ziett platform for the time being. • All traffic destined for Unitel subscribers will continue to be automatically routed through our dedicated Unitel ➔ Unitel path. • This ensures that your current messages are delivered instantly and are not stuck in the carrier's recovery queue. We will only reactivate the Africell-originated route once we receive official confirmation of stability from the operator and verify that the delivery success rate has normalized. Next Update: We will provide another update within 6 hours or as soon as we receive carrier feedback.

4. resolved Apr 29, 2026, 10:18 PM UTC

   Service Normalized and Precautionary Measures Active Our continuous monitoring confirms that the SMS delivery flow has been normalized. Messages previously held in the carrier's queue have been successfully processed and delivered to Unitel subscribers. Although we have not yet received a formal resolution notice from Africell's technical team, our internal telemetry and delivery success rates indicate that stability has been restored. Therefore, we are marking this incident as resolved. Precautionary Measure (Next 48 Hours): To ensure the continued reliability of your communications and to guard against any potential residual instability, we have decided to keep the direct Africell ➔ Unitel route disabled for the next 48 hours as a quarantine period. • During this time, all traffic destined for Unitel subscribers will continue to be automatically routed via our direct Unitel ➔ Unitel path, which remains 100% operational. • This routing adjustment is entirely transparent and has no impact on delivery speed, features, or messaging costs. We appreciate your patience during this carrier-side disruption. Our team will continue to monitor traffic patterns closely over the coming days.

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Started Mar 27, 2026, 05:33 PM UTC· resolved Mar 27, 2026, 06:04 PM UTC

1. investigating Mar 27, 2026, 05:33 PM UTC

   We are currently investigating an issue affecting the Ziett Core API. Customers may experience failing API requests or timeouts. Our engineering team is actively working to identify the root cause and restore service as quickly as possible. We will provide further updates shortly

2. resolved Mar 27, 2026, 06:04 PM UTC

   The issue has been identified and fully resolved. The Ziett Core API is now operating normally. We are monitoring the systems closely to ensure stability. We sincerely apologize for any disruption this may have caused to your operations.

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