Outages by dayDecember 20, 2025
Outages on December 20, 2025
UTC day 2025-12-20 ( to your time). Incidents as the vendors posted them on their status pages; impact labels are the vendor’s own.
By vendor label: Critical 3 · Major 2 · Minor 6 · No impact listed 1 · unknown 1 · 2 maintenance
Incidents started this day 13
| Vendor | Incident | Impact | Started | Resolved | Status |
|---|---|---|---|---|---|
| Maven Central | search.maven.org is down | Critical | (15 min) | resolved | |
| Moonshot AI (Kimi) | k2-thinking模型调用报错量异常 | Critical | (3 min) | resolved | |
| Help Scout | Docs site not loading | Critical | (1.3 h) | resolved | |
| Scaleway | [DC2] Switch Down in room 205 - G4 | Major | (11 h) | resolved | |
| Nebius | Infiniband problems in fabric 7 | Major | (1.7 h) | resolved | |
| Claude | Research unavailable for some teams orgs | Minor | (44 min) | resolved | |
| Anthropic | Research unavailable for some teams orgs | Minor | (44 min) | resolved | |
| Twilio | MMS Delivery Delays and Failures To and From a Subset of Longcodes in Australia | Minor | (23 h) | resolved | |
| Salesforce | Performance Degradation: Core Service | Minor | (8 min) | resolved | |
| Firebase | Firebase Hosting returning unexpected 431 errors on some POST requests to Firebase Functions rewrites | Minor | (17 d) | resolved | |
| Twilio | SMS Delivery Failure to Twilio Phone Numbers in Mexico via Subset of Shortcodes | Minor | (26 h) | resolved | |
| Sentry | Sentry Login Issues | No impact listed | (3.3 h) | resolved | |
| Gamma | Issues with app loading | unknown | (19 min) | resolved |
Still open from earlier days 5
| Vendor | Incident | Impact | Started | Resolved | Status |
|---|---|---|---|---|---|
| MongoDB Atlas | Issue connecting to Atlas Data Federation and Online Archive | Major | (2.7 h) | resolved | |
| Snyk | PNPM project testing and import degraded for SCM scans in regional environments | Minor | (19 d) | resolved | |
| Vonage | Voice Quality Degradation to UK Landline & Toll-free Virtual Numbers | Minor | (3 d) | resolved | |
| Salesforce | Feature Perf Degradation: Core Service | Minor | (7 d) | resolved | |
| Twilio | SMS Delivery Delays to XPhone Network in Israel | Minor | (3.6 h) | resolved |
Maintenance 2
| Vendor | Incident | Impact | Started | Resolved | Status |
|---|---|---|---|---|---|
| Aircall | [Scheduled] Aircall Scheduled Maintenance — Saturday, December 20th 2025 | Maintenance | (2.0 h) | resolved | |
| Monday.com | [Scheduled] Scheduled Maintenance on the US Server | Maintenance | (30 min) | resolved |
Times show in your time zone (UTC in the page source). An incident counts as “still open” here if it started up to 7 days earlier and had not been resolved by the start of this UTC day (unresolved ones count for 24 hours). See each vendor’s monthly report: Maven Central, Moonshot AI (Kimi), Help Scout, Scaleway, Nebius, Claude, Anthropic, Twilio, Salesforce, Firebase, Sentry, Gamma.
Cite this
13 vendor-reported incidents started on 2025-12-20 (UTC) across 12 vendors, 5 labelled major or critical by the vendor.
- Title
- Outages on December 20, 2025
- Vendor
- Rewindex daily outage roundup
- Date
- URL
- https://rewindex.com/outages/2025-12-20