ThousandEyes 2026 Outage Report: What Hosting Buyers Should Watch
Cisco ThousandEyes has published weekly internet health checks tracking global network outages across ISPs, public cloud, collaboration apps, and edge networks (DNS, CDN, security services) from late December 2025 through August 23, 2026. The data shows a clear pattern: total tracked events rose from 199 in the first week of January to a peak of 610 in late July, with U.S. outage counts frequently surpassing 300 per week by summer. For website owners, sysadmins, and hosting buyers, these are not abstract statistics. A transit provider’s 30‑minute outage can mean dropped connections, failed backups, and latency spikes for VPS and WordPress workloads. This article breaks down the trends, highlights notable carrier and cloud disruptions, and explains practical steps to reduce operational risk.
Global and US Outage Trends: From Winter Calm to Summer Spikes
The reporting period begins with the week of Dec. 29, 2025–Jan. 4, 2026: ThousandEyes recorded 199 global outage events and 71 in the U.S. One week later (Jan. 5–11), global counts jumped 28% to 255, with U.S. events up 90% to 135. By late February (Feb. 23–Mar. 1), global outages hit 386 (up 62% from the prior week’s 239) and U.S. events reached 184.
Spring brought volatility. The week of May 11–17 saw 415 global events (up 46% week‑over‑week) and 268 U.S. events. Public cloud network outages specifically nearly doubled in the U.S., rising from 88 to 174 (a 98% increase). June 1–7 marked another inflection: 483 global outages (up 69% from 286) and 319 U.S. outages (up 70%). ISP outages globally rose 70% to 265.
Midsummer peaked with July 20–26: 610 global and 457 U.S. outages. The following weeks eased slightly: Aug. 10–16 showed 546 global (up 9% from 502) and 359 U.S.; Aug. 17–23 reported 534 global (down 2%) and 366 U.S. (up 2%). Category splits matter: in the Aug. 17–23 week, global ISP outages fell 15% to 252, but public cloud network outages rose 17% to 189 (U.S. cloud outages up 22% to 174). Collaboration app outages stayed near zero throughout. For hosting buyers, the shift toward cloud‑network instability is a signal that VPS and managed cloud regions are increasingly the weak point, not just last‑mile ISPs.
Related ServerSpan guide: Cloudflare Global Outage November 18, 2025: Why Centralized Infrastructure Is a Single Point of Failure (And What VPS Hosting Gets Right).
Notable Carrier and Cloud Disruptions Affecting Hosting Infrastructure
Several named incidents directly threaten hosting operations. On Aug. 21, Arelion (formerly Telia Carrier), a Tier 1 transit provider, suffered an outage lasting one hour 21 minutes over a three‑hour window, centered initially on Chicago nodes and later spreading to Atlanta, Seattle, Dallas, San Jose, Sweden, and the U.K. It impacted downstream partners across more than 30 countries. Such transit blips propagate to reseller hosting and VPS providers that peer with Arelion.
Cox Communications had repeated short U.S. outages (Aug. 17: 24 minutes centered on Chicago; earlier June 25 and others). Microsoft’s West US region on July 23 experienced a routing‑maintenance bug that removed IP routes between the datacenter and WAN; ThousandEyes noted impacted partners across many regions, with full recovery after rollback. A separate Network World report dated Aug. 11, 2026 states Microsoft’s Azure suffered a broad multi‑hour outage from a misconfiguration in storage accounts, cascading into VM, managed identity, and developer workflow failures for over 10 hours. We do not have the exact regional spread beyond the report’s description, but it clearly affects any site hosted on Azure IaaS/PaaS.
Cloudflare, a common edge/CDN layer for WordPress and VPS users, had two documented incidents: Jan. 27 (two hours 13 minutes, Chicago‑centric) and Feb. 20 (BYOIP bug withdrew customer IP advertisements for ~1h40m, causing connection timeouts). Madgenius, a U.S. hosting/infrastructure provider, had outages Jan. 16 and Feb. 13 (~1h+ each, Columbus OH nodes). Zayo, Cogent, Lumen, Comcast, Charter/Spectrum, AT&T, Verizon, GTT, and others appear repeatedly with node‑specific flapping, often in Chicago, New York, Los Angeles, or Ashburn. If your server or control panel sits in those metros, expect occasional packet loss.
Why Edge, DNS, and Transit Failures Matter for Website Owners
Many 2026 outages are not server‑side crashes but network‑layer faults. When Cloudflare’s BYOIP task withdrew routes, backends were healthy yet users saw timeouts. That distinction is critical: your uptime monitor may show “server OK” while real visitors fail to connect. DNS and CDN dependencies are now part of your hosting stack whether you run a $5 VPS or a managed cluster.
For a more detailed walkthrough of this part of the topic, read Server Monitoring on Your VPS: Self-Hosted Uptime and Health Monitoring for Developers.
Public cloud network outages, which rose in several weeks, degrade API calls, backup replication, and control‑panel logins. A WordPress site on a managed cloud may keep serving HTML but fail to push media to object storage. Collaboration app outages stayed low, but Microsoft 365 disruptions (Apr. 2, Central U.S. datacenter degradation) can block admin email or SSO used for support desks.
The tradeoff is clear: single‑region, single‑carrier hosting is cheaper but exposed to these flapping nodes. Multi‑region or multi‑CDN designs cost more and add operational complexity. For most SMBs, a secondary DNS provider and a CDN failover rule are the minimum viable buffer.
Practical Resilience: Monitoring, Multi‑Region, and Mitigation Priorities
ThousandEyes’ 2025–2026 takeaways emphasize that “if the network seems healthy but users are experiencing issues, the problem might be in the backend,” and that staggered edge updates can cause intermittent global instability. For hosting buyers, this means internal ping checks are insufficient. Deploy external synthetic monitoring from at least three geographies, including a neutral lookup of DNS resolution and TLS handshake.
Industry analysts cited in the Azure coverage urge enterprises to diversify workloads across cloud providers or adopt hybrid setups with redundancies, and to keep CI/CD pipelines leaner to limit blast radius. For individual site owners: choose a host that publishes its upstream transit diversity; ask whether they use two or more Tier 1 carriers. Use secondary authoritative DNS (e.g., a different provider from your registrar’s default). Schedule backups to an off‑provider object store, and test restore paths quarterly.
Security patching also protects availability. Cisco’s emergency firewall patches (FMC auth bypass and deserialization, CVE‑2026‑20079/20131, CVSS 10) are not outage events themselves but unpatched management interfaces could be hijacked to cause downtime. Until patched, restrict FMC web interface from public internet. This is a reasonable mitigation priority alongside network resilience.
Key Takeaways / Practical Checklist
- Map your hosting provider’s upstream carriers; avoid single‑node or single‑metro dependence (Chicago, Ashburn, LA appear often).
- Enable secondary DNS and CDN failover to survive edge withdrawals like the Cloudflare BYOIP incident.
- Monitor from outside your network: synthetic checks for DNS, TCP, HTTP, and latency from multiple regions.
- For VPS/cloud, keep cross‑region snapshots and a tested off‑provider backup; review Azure‑class storage misconfig risks with your vendor.
- Patch critical infrastructure (e.g., Cisco FMC) and keep management planes off public IPs.
- Track ThousandEyes weekly totals for public‑cloud‑outage trends that may precede control‑panel or API latency.
Conclusion
The 2026 ThousandEyes outage record shows a hosting landscape where total network events climbed from under 200 weekly to over 600 at peak, with cloud‑network disruptions growing in share by August. For HostXMe readers—buyers, owners, sysadmins—the lesson is that downtime is increasingly a transit, edge, or control‑plane problem, not just a server crash. By diversifying carriers, monitoring externally, and preparing backup paths, you can absorb the short but frequent blips that defined the first eight months of 2026.