CHEAPUNO guide

Why your status page shows green when customers are locked out

Stop letting clean local dashboards mask regional outages caused by stale CDN caches and ISP-level failures.

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Photo: StockSnap (CC0)

What you are probably seeing

Your internal monitoring tools report all systems as operational with zero active incidents while support tickets spike from users in specific geographic regions.

When you manually check the application from your office network, it loads instantly and works perfectly, creating a false sense of security that the outage has already been resolved.

Why it happens

Content Delivery Networks often cache healthy responses and serve that stale data to local probes even when the origin server is failing or a regional ISP is blocking access.

Your monitoring infrastructure usually runs from a single location or cloud region, so it cannot detect connectivity issues that only affect customers in specific areas like Texas or New York.

What changed recently

2026-10-07 · ASOS Confirms Cyberattack, Data Breach
ASOS confirmed a breach in that exact blind spot:
• Xuanye Group accessed basic user data via third-party notification tool
• Payment cards and account passwords remained secure
Source: securityweek

2026-10-06 · AT&T Outage Today: Is AT&T Down Today in the US? Users Report 5G Home Internet, Broadband Error, Phone Service Problems & Mobile Signal Issues | AT&T Downdetector Status
StatusGator is now tracking AT&T outages for that gap:
• 27 reports in 24 hours cluster in TX, GA, FL, NY.
• 12 service outage reports identified in the mix.
Source: The Sunday Guardian

Step by step

1. Deploy lightweight status probes in multiple geographic regions to check your service from actual customer locations.

2. Force these regional probes to bypass your CDN cache to verify that the origin server is actually responding correctly.

3. Integrate these multi-region checks into your primary status page so the public view reflects real user experience.

4. Review your ISP-level outages for the affected regions to determine if the problem stems from their network infrastructure.

5. Test your alerting system to ensure it triggers when regional probes fail even if the central health check passes.

Ways to go further

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Sources

Follow the evidence.