Outages by dayDecember 21, 2025
Outages on December 21, 2025
UTC day 2025-12-21 ( to your time). Incidents as the vendors posted them on their status pages; impact labels are the vendor’s own.
14incidents started
2labelled major or critical
9vendors with a new incident
6still open from earlier days
By vendor label: Critical 2 · Minor 12 · 14 maintenance
Incidents started this day 14
Still open from earlier days 6
| Vendor | Incident | Impact | Started | Resolved | Status |
|---|---|---|---|---|---|
| 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 | MMS Delivery Delays and Failures To and From a Subset of Longcodes in Australia | Minor | (23 h) | 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 |
Maintenance 14
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), Baseten, Twilio, Vonage, Salesforce, Cloudinary, Claude, Anthropic.
Cite this
14 vendor-reported incidents started on 2025-12-21 (UTC) across 9 vendors, 2 labelled major or critical by the vendor.
- Title
- Outages on December 21, 2025
- Vendor
- Rewindex daily outage roundup
- Date
- URL
- https://rewindex.com/outages/2025-12-21