# Sinch in December 2025: incidents, uptime and changes

> Sinch in December 2025: 20 incidents on its status page (0 major or critical), 100% free of major or critical incidents (vendor-reported). From Rewindex’s archive of Sinch’s status, pricing and policy pages.

Canonical: https://rewindex.com/company/sinch/2025/12
Last updated: 2026-01-01T00:00:00Z

- Incidents posted: 20 (major/critical: 0) · Maintenance: 36
- By vendor impact label: minor 17, none 3
- Uptime (vendor-reported): 100% free of major/critical incidents, 94.30% free of any incident; outage time 0 min, incident time 42 h 22 min
- Price changes: 0 · Pricing/legal/trust page changes: 0 · Deprecations: 0 · CVEs: 0
- Previous month: [November 2025](https://rewindex.com/company/sinch/2025/11.md) · Next: [January 2026](https://rewindex.com/company/sinch/2026/01.md) · [All months](https://rewindex.com/company/sinch/reports.md) · [Sinch](https://rewindex.com/company/sinch.md)

_Uptime: Derived from the incidents the vendor posted on its own status page, not measured by us. A minute counts as an outage minute when a major or critical incident (as the vendor labelled it) was open; incident minutes include minor ones too. Maintenance and incidents marked "no impact" are left out, overlapping incidents are merged, a resolved incident counts for at most 7 days, and one still open with no resolution counts for at most 24 hours._

## All incidents

| Incident | Impact (vendor label) | Started (UTC) | Resolved (UTC) | Duration | Status |
| --- | --- | --- | --- | --- | --- |
| [DI SMS 365 (iSMS) \| Operator Services \| Potential delay in delivery of MO, MT and DR \| TT\# MNOC-62312](https://rewindex.com/company/sinch/incidents/xsyjpqcg9h6q.md) | minor | 2025-12-01 10:26 UTC | 2025-12-01 12:44 UTC | 2.3 h | resolved |
| [DI MMS 365 (MM7)  \| Operator Services \| Potential delay in delivery of MO, MT and DLR \| TT\#MNOC-62320](https://rewindex.com/company/sinch/incidents/28tcfl0491xl.md) | minor | 2025-12-01 17:33 UTC | 2025-12-01 20:15 UTC | 2.7 h | resolved |
| [Delivery issues United States - Verizon](https://rewindex.com/company/sinch/incidents/3j6z6nl2lz30.md) | minor | 2025-12-01 19:18 UTC | 2025-12-02 02:41 UTC | 7.4 h | resolved |
| [DI MMS 365 (MM7)  \| Operator Services \| Potential delay in delivery of MO, MT and DLR \| TT\#MNOC-62330](https://rewindex.com/company/sinch/incidents/kc6bk6r4xkwc.md) | minor | 2025-12-01 22:57 UTC | 2025-12-02 01:55 UTC | 3.0 h | resolved |
| [Service Degradation - 10DLC Campaign and Number provisioning](https://rewindex.com/company/sinch/incidents/z7zph3ft1qm4.md) | minor | 2025-12-04 20:07 UTC | 2025-12-04 22:35 UTC | 2.5 h | resolved |
| [Delivery Issue Mexico - AT&T](https://rewindex.com/company/sinch/incidents/pcmcddjv2xf6.md) | minor | 2025-12-07 06:41 UTC | 2025-12-07 08:31 UTC | 1.8 h | resolved |
| [Delivery issue Denmark - Telia](https://rewindex.com/company/sinch/incidents/wgy2h2pnvk35.md) | minor | 2025-12-09 17:11 UTC | 2025-12-09 20:46 UTC | 3.6 h | resolved |
| [Delivery Issue Dominican Republic - Claro](https://rewindex.com/company/sinch/incidents/ksfbtg075tbg.md) | minor | 2025-12-09 19:04 UTC | 2025-12-10 03:23 UTC | 8.3 h | resolved |
| [DI SMS 365 (iSMS) \| Operator Services \| Potential delay in delivery of MO, MT and DR \| TT\# MNOC-62493](https://rewindex.com/company/sinch/incidents/gky0z1ck1mhk.md) | none | 2025-12-11 21:47 UTC | 2025-12-12 01:16 UTC | 3.5 h | resolved |
| [DI SMS 365 (iSMS) \| Operator Services \| Potential delay in delivery of MO, MT and DR \| TT\# MNOC-62493](https://rewindex.com/company/sinch/incidents/dnp0brkrdcn3.md) | none | 2025-12-12 04:18 UTC | 2025-12-12 05:22 UTC | 1.1 h | resolved |
| [DI SMS 365 (iSMS) \| Operator Services \| Delay in retrieving statistics from Report Manager \| Ref Number: MNOC-62524](https://rewindex.com/company/sinch/incidents/5zwrydz7fcy1.md) | none | 2025-12-14 10:38 UTC | 2025-12-16 20:01 UTC | 2 d | resolved |
| [Delivery Issue France - SFR](https://rewindex.com/company/sinch/incidents/3tqj25gldxp3.md) | minor | 2025-12-15 00:37 UTC | 2025-12-15 02:06 UTC | 1.5 h | resolved |
| [DI MMS 365 (MM7)  \| Operator Services \| Potential delay in delivery of MO, MT and DLR \| TT\#MNOC-62531](https://rewindex.com/company/sinch/incidents/z7m9vl1ptx7p.md) | minor | 2025-12-15 15:36 UTC | 2025-12-15 15:49 UTC | 13 min | resolved |
| [Service Degradation - Number provisioning towards US/CA](https://rewindex.com/company/sinch/incidents/s6r7xfwzyrpy.md) | minor | 2025-12-16 18:43 UTC | 2025-12-16 22:54 UTC | 4.2 h | resolved |
| [Sinch Engage - Contacts Degradation](https://rewindex.com/company/sinch/incidents/rhphsrm3k7ls.md) | minor | 2025-12-16 22:51 UTC | 2025-12-16 23:05 UTC | 14 min | resolved |
| [Delivery Issue Brazil - Vivo](https://rewindex.com/company/sinch/incidents/4y025d0zgxbf.md) | minor | 2025-12-18 12:38 UTC | 2025-12-18 13:32 UTC | 54 min | resolved |
| [Delivery Issue Denmark - Nuuday](https://rewindex.com/company/sinch/incidents/wqnjwcylzdwb.md) | minor | 2025-12-18 16:04 UTC | 2025-12-18 21:52 UTC | 5.8 h | resolved |
| [Delivery Issue US - US Cellular](https://rewindex.com/company/sinch/incidents/wv910sphzhkf.md) | minor | 2025-12-19 13:46 UTC | 2025-12-19 14:30 UTC | 44 min | resolved |
| [Delivery Issue Iraq - Asia Cell](https://rewindex.com/company/sinch/incidents/td2wk7z2mp89.md) | minor | 2025-12-23 00:38 UTC | 2025-12-23 02:04 UTC | 1.4 h | resolved |
| [Delivery Issue United States - A subset of small networks](https://rewindex.com/company/sinch/incidents/kk3bz8xcqmb5.md) | minor | 2025-12-28 04:22 UTC | 2025-12-28 05:52 UTC | 1.5 h | resolved |

## Maintenance

| Incident | Impact (vendor label) | Started (UTC) | Resolved (UTC) | Duration | Status |
| --- | --- | --- | --- | --- | --- |
| [\[Scheduled\] DI SMS 365 (MM4) \| Operator Services \| Application Maintenance \| PCR Number \#PCRSDI-12018](https://rewindex.com/company/sinch/incidents/0vv4ft5ljy8z.md) | maintenance | 2025-12-02 05:00 UTC | 2025-12-02 09:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] External Maintenance - Singapore - Starhub](https://rewindex.com/company/sinch/incidents/yhmjn0vythfy.md) | maintenance | 2025-12-02 16:00 UTC | 2025-12-02 22:00 UTC | 6.0 h | resolved |
| [\[Scheduled\] External Maintenance - T-Mobile United States](https://rewindex.com/company/sinch/incidents/7brfqg8pkn5f.md) | maintenance | 2025-12-03 04:00 UTC | 2025-12-03 12:01 UTC | 8.0 h | resolved |
| [\[Scheduled\] DI SMS 365 (SMSX) \| Operator Services \| Application, Database and System Maintenance \| PCR Number \#PCRSDI-12006](https://rewindex.com/company/sinch/incidents/lm4b6m6j4tf1.md) | maintenance | 2025-12-03 05:00 UTC | 2025-12-03 10:00 UTC | 5.0 h | resolved |
| [\[Scheduled\] Campaigns Application Maintenance](https://rewindex.com/company/sinch/incidents/wkmgw211b5gx.md) | maintenance | 2025-12-03 12:00 UTC | 2025-12-03 13:00 UTC | 1.0 h | resolved |
| [\[Scheduled\] DI SMS 365 \| Operator Services \| Network Maintenance \| PCR Number \#PCRSDI-12035](https://rewindex.com/company/sinch/incidents/cmd15k1qd5hg.md) | maintenance | 2025-12-03 21:00 UTC | 2025-12-03 22:30 UTC | 1.5 h | resolved |
| [\[Scheduled\] External Maintenance - Toll-Free Number Provider](https://rewindex.com/company/sinch/incidents/fb0m5fpj2mrj.md) | maintenance | 2025-12-04 04:00 UTC | 2025-12-04 08:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] External Maintenance - T-Mobile United States](https://rewindex.com/company/sinch/incidents/tdlwc9yg0dqd.md) | maintenance | 2025-12-04 04:01 UTC | 2025-12-04 12:00 UTC | 8.0 h | resolved |
| [\[Scheduled\] DI SMS 365 (SMSx) \| Operator Services \| Network Maintenance \| PCR Number \#PCRSDI-12021](https://rewindex.com/company/sinch/incidents/wsl9ynp501z1.md) | maintenance | 2025-12-04 07:00 UTC | 2025-12-04 11:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] Campaigns Application Maintenance](https://rewindex.com/company/sinch/incidents/5ycyscvb8t07.md) | maintenance | 2025-12-05 10:30 UTC | 2025-12-05 11:15 UTC | 45 min | resolved |
| [\[Scheduled\] Message Manager 6.1.7 Release, OS patches/updates](https://rewindex.com/company/sinch/incidents/xd9y0c9b3q8w.md) | maintenance | 2025-12-06 18:00 UTC | 2025-12-06 22:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] Sinch Emergency Maintenance - US7 Site](https://rewindex.com/company/sinch/incidents/72zf2sg49nxn.md) | maintenance | 2025-12-07 07:00 UTC | 2025-12-07 10:00 UTC | 3.0 h | resolved |
| [\[Scheduled\] Decommissioning of US3 site](https://rewindex.com/company/sinch/incidents/83gmjr6jbnr5.md) | maintenance | 2025-12-08 09:30 UTC | 2025-12-08 11:30 UTC | 2.0 h | resolved |
| [\[Scheduled\] External Maintenance - 3 Denmark and Sweden](https://rewindex.com/company/sinch/incidents/xsdw7t0901d9.md) | maintenance | 2025-12-08 23:00 UTC | 2025-12-09 05:00 UTC | 6.0 h | resolved |
| [\[Scheduled\] DI SMS 365 (SMSx, MMX) \| Operator Services \| Network Maintenance \| PCR Number \#PCRSDI-12022](https://rewindex.com/company/sinch/incidents/j8tx424qsmp8.md) | maintenance | 2025-12-09 07:00 UTC | 2025-12-09 10:00 UTC | 3.0 h | resolved |
| [\[Scheduled\] Planned Maintenance - MMS](https://rewindex.com/company/sinch/incidents/6tskz8ypykqv.md) | maintenance | 2025-12-09 09:00 UTC | 2025-12-09 12:00 UTC | 3.0 h | resolved |
| [\[Scheduled\] Campaigns Application Maintenance](https://rewindex.com/company/sinch/incidents/vxhnxdt8q3gs.md) | maintenance | 2025-12-09 14:00 UTC | 2025-12-09 15:00 UTC | 1.0 h | resolved |
| [\[Scheduled\] DI SMS 365 (SMSX) \| Operator Services \| Application, Database and System Maintenance \|\| PCR Number \#PCRSDI-12023](https://rewindex.com/company/sinch/incidents/7jtgndzbqg38.md) | maintenance | 2025-12-10 06:00 UTC | 2025-12-10 11:00 UTC | 5.0 h | resolved |
| [\[Scheduled\] External Maintenance - T-Mobile United States](https://rewindex.com/company/sinch/incidents/5jjkwctnsr4x.md) | maintenance | 2025-12-10 06:01 UTC | 2025-12-10 12:00 UTC | 6.0 h | resolved |
| [\[Scheduled\] Sinch Emergency Maintenance - US7 Site](https://rewindex.com/company/sinch/incidents/nstk2nj3gb1p.md) | maintenance | 2025-12-10 07:00 UTC | 2025-12-10 11:01 UTC | 4.0 h | resolved |
| [\[Scheduled\] DI MMS 365 (MM4) \| Operator Services \| Application Maintenance \| PCR Number \#PCRSDI-12017](https://rewindex.com/company/sinch/incidents/nr5w37fstc6b.md) | maintenance | 2025-12-10 14:00 UTC | 2025-12-10 17:00 UTC | 3.0 h | resolved |
| [\[Scheduled\] External Maintenance - Toll-Free Number Provider](https://rewindex.com/company/sinch/incidents/79g11ymtbm24.md) | maintenance | 2025-12-11 04:00 UTC | 2025-12-11 08:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] External Maintenance - T-Mobile United States](https://rewindex.com/company/sinch/incidents/8l5y7xtsnv1x.md) | maintenance | 2025-12-11 05:00 UTC | 2025-12-11 11:00 UTC | 6.0 h | resolved |
| [\[Scheduled\] DI MMS 365 (MM4) \| Operator Services \| Application Maintenance \| PCR Number \#PCRSDI-12013](https://rewindex.com/company/sinch/incidents/45y6cjdrxrfr.md) | maintenance | 2025-12-11 06:00 UTC | 2025-12-11 10:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] Campaigns Application Maintenance](https://rewindex.com/company/sinch/incidents/dvh7gr7h26gq.md) | maintenance | 2025-12-11 10:30 UTC | 2025-12-11 11:01 UTC | 31 min | resolved |
| [\[Scheduled\] Scheduled Maintenance Report for Sinch](https://rewindex.com/company/sinch/incidents/d5cpww4m6hp1.md) | maintenance | 2025-12-13 18:00 UTC | 2025-12-13 23:00 UTC | 5.0 h | resolved |
| [\[Scheduled\] DI E-Mail 365 \| Application Maintenance \| PCR Number \# PCRSDI-12033](https://rewindex.com/company/sinch/incidents/ws9w36x436rw.md) | maintenance | 2025-12-14 02:00 UTC | 2025-12-14 04:00 UTC | 2.0 h | resolved |
| [\[Scheduled\] External Maintenance - United States - T-Mobile](https://rewindex.com/company/sinch/incidents/q4lrf5vs8f7n.md) | maintenance | 2025-12-15 05:00 UTC | 2025-12-15 11:00 UTC | 6.0 h | resolved |
| [\[Scheduled\] DI SMS 365 (SMSX) \| Operator Services \| Application and System Maintenance \| PCR Number \#PCRSDI-12032](https://rewindex.com/company/sinch/incidents/yf77vmqp57rx.md) | maintenance | 2025-12-15 06:00 UTC | 2025-12-15 09:00 UTC | 3.0 h | resolved |
| [\[Scheduled\] DI MMS 365 (MM7) \| Operator Services \| Application Maintenance \| PCR Number \#PCRSDI-12016](https://rewindex.com/company/sinch/incidents/28hvjpn0lzc5.md) | maintenance | 2025-12-15 07:00 UTC | 2025-12-15 09:01 UTC | 2.0 h | resolved |
| [\[Scheduled\] External Maintenance - United States - T-Mobile](https://rewindex.com/company/sinch/incidents/76hrc6jqn1h8.md) | maintenance | 2025-12-16 05:00 UTC | 2025-12-16 11:00 UTC | 6.0 h | resolved |
| [\[Scheduled\] Campaigns Application Maintenance](https://rewindex.com/company/sinch/incidents/hrj96pq8hnxz.md) | maintenance | 2025-12-17 14:15 UTC | 2025-12-17 14:30 UTC | 15 min | resolved |
| [\[Scheduled\] External Maintenance - Toll-Free Number Provider](https://rewindex.com/company/sinch/incidents/52q66cpxn8sp.md) | maintenance | 2025-12-18 04:00 UTC | 2025-12-18 08:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] DI SMS 365 (SMSX) \| Operator Services \| Application and System Maintenance \| PCR Number \#PCRSDI-12034](https://rewindex.com/company/sinch/incidents/twwxg3jqzs6k.md) | maintenance | 2025-12-18 07:00 UTC | 2025-12-18 11:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] Campaigns Application Maintenance](https://rewindex.com/company/sinch/incidents/74cxq9jlp0l1.md) | maintenance | 2025-12-19 10:00 UTC | 2025-12-19 10:31 UTC | 31 min | resolved |
| [\[Scheduled\] Sinch Contact Pro - Test tenant upgrade](https://rewindex.com/company/sinch/incidents/m1t9ml08nj4d.md) | maintenance | 2025-12-29 06:00 UTC | 2025-12-29 14:00 UTC | 8.0 h | resolved |

## Cite this

Sinch posted 20 status incidents in December 2025 (0 major or critical); 0 price changes and 0 notable page changes observed.

- Canonical URL: https://rewindex.com/company/sinch/2025/12
- Citation: Sinch, “Sinch in December 2025” (2025-12-01 00:00 UTC). Archived by Rewindex: https://rewindex.com/company/sinch/2025/12 (CC BY 4.0).
- Markdown link: `[Sinch: Sinch in December 2025 (2025-12-01)](https://rewindex.com/company/sinch/2025/12)`


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Canonical: https://rewindex.com/company/sinch/2025/12 · Markdown: https://rewindex.com/company/sinch/2025/12.md · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-04T17:16:10.904Z