2026 Internet Outage Trends: What Hosting Buyers Need to Know About Network Reliability

Cisco ThousandEyes data compiled by Network World shows that network outages remain a weekly reality for anyone running sites, VPS instances, or cloud workloads. From late December 2025 through August 2026, global outage counts swung between 199 and 610 events per week, with public cloud network failures spiking in several periods and Tier 1 transit providers like Arelion, Cogent, and Zayo causing cross-border reachability gaps. For hosting buyers, these are not abstract telemetry points: they translate into latency, broken SSH sessions, unreachable control panels, and failed backups. This editorial breaks down the confirmed trends, explains why upstream carrier health matters even if your server is stable, and lists what to verify with your provider.

ThousandEyes Outage Data: Eight Months of Pressure on Transit and Cloud

The research pack covers weekly internet health checks from December 29, 2025 to August 23, 2026. In the final reported week (August 17–23), ThousandEyes recorded 534 global outage events across ISPs, public cloud networks, collaboration apps, and edge networks (DNS, CDN, security-as-a-service). That was a 2% decrease from 546 the prior week, but US-specific outages rose 2% to 366. The category split matters: global ISP outages fell 15% to 252, while public cloud network outages rose 17% to 189 (US up 22% to 174). Collaboration app outages stayed low at one global event.

Looking back, volatility was higher earlier in the year. The week of February 23–March 1 saw 386 global outages, a 62% jump from 239, driven by a 92% global ISP outage increase. Public cloud networks also climbed repeatedly: week of July 6–12 showed global public cloud outages at 234, up 72% week-over-week (US 221, up 84%). By late July, totals cooled (514 on July 27–August 2) before ticking up again. The key takeaway is that neither ISPs nor cloud networks are on a smooth improvement curve; both oscillate, and cloud-edge incidents are becoming a larger share of the noise.

Why Carrier and Cloud Outages Hit Web Hosting Operations

A VPS or dedicated server is only as reachable as the upstream transit and peering in front of it. When a Tier 1 such as Arelion (formerly Telia Carrier, headquartered in Stockholm) or Cogent suffers a node-level outage, downstream hosting providers and their customers inherit packet loss. The August 21 Arelion event lasted one hour 21 minutes over a three-hour ten-minute window, first seen on Chicago nodes and then spreading to Atlanta, Seattle, Dallas, San Jose, Sweden, and the UK, impacting dozens of countries. If your European WordPress site sits behind a host that uses Arelion for transatlantic routes, visitors from the US or Asia may time out even though your server never crashed.

Public cloud network outages are equally relevant. On July 23, Microsoft experienced a West US region network disruption caused by a maintenance bug that removed IP routes between a datacenter and its WAN; services took until 3:41 PM EDT to fully recover. Anyone running cloud VPS or managed Kubernetes on that path saw connection resets. Edge providers are not immune: on February 20, Cloudflare’s BYOIP service broke for about 1h40m because an automated task withdrew customer IP advertisements, causing connection failures. For hosting buyers, the lesson is that SLA uptime on the hypervisor does not guarantee path availability.

European Exposure: Arelion, Liberty Global and Cross-Border Incidents

European readers should note how often regional carriers appear in the data. Arelion, a Swedish Tier 1, is cited in multiple notable outages: January 2 (Los Angeles/Phoenix), March 20 (Ashburn, Washington, Dallas, and EU nodes), July 2 (Chicago-centered with follow-on Seattle, New York, Denmark, Sweden), and the large August 21 event. Liberty Global, headquartered in Schiphol Rijk, Netherlands, had a July 30 outage centered on Miami that still impacted Japan, Hong Kong, Mexico, Canada, South Korea, Australia, New Zealand, and Singapore. PCCW (Hong Kong) and TATA Communications (India/Singapore) also showed nodes affecting European-adjacent traffic.

What this means is that a “European” hosting setup can be destabilized by a fault outside the EU. If your dedicated server is in Frankfurt but its bandwidth mix includes Arelion or Liberty Global transit, a US-node outage can still brown out latency for transatlantic users. The data also shows collaboration app networks (Zoom, Teams-like) were mostly at zero or one weekly outage, so real-time app downtime is not the current driver; raw transport and cloud routing are. Hosting buyers should ask providers for a published upstream blend and confirm whether they use multiple independent Tier 1s.

For a more detailed walkthrough of this part of the topic, read Network Troubleshooting Commands on Linux VPS: Fix Issues Fast.

What to Check Next: Monitoring, Redundancy and Incident Readiness

Based on the confirmed patterns, the practical response is layered. First, deploy external synthetic monitoring from at least two geographic points (e.g., a European probe and a US probe) that checks TCP/80, TCP/443, SSH, and DNS resolution, not just ICMP. ThousandEyes is enterprise-grade, but uptime monitors and open-source smokeping give smaller teams visibility. Second, verify your host’s network diversity: a single upstream carrier is a single point of failure. Ask whether they advertise their own ASN via BGP with two or more transit providers, or at least use diverse peering. Third, use Anycast DNS and a CDN with failover so that a transit outage in one region does not blackhole the domain.

Fourth, for cloud VPS, consider multi-region snapshots and offsite backups pulled over a different network path; a public cloud network outage can block replication. Fifth, read the SLA: many hosting contracts credit only for hypervisor downtime, not upstream transit loss. If the provider cannot define “network availability,” treat that as a risk. Finally, watch the weekly ThousandEyes summaries; when public cloud outages rise for two consecutive weeks (as seen in early July), review your own cloud egress and failover tests before a peak traffic period.

Key Takeaways

Track weekly ThousandEyes outage counts; public cloud network failures rose 17% globally in Aug 17–23 week.
Tier 1 transit outages (Arelion, Cogent, Zayo) cause reachability loss even if your server is healthy.
European hosts depend on global carriers; a US-node fault can degrade EU–US latency.
Use external multi-region monitoring, Anycast DNS, and CDN failover to absorb path failures.
Confirm your host’s BGP/transit diversity and whether SLAs cover network—not just server—uptime.
Keep offsite backups on a separate provider to avoid blocked replication during cloud outages.

Conclusion

The 2026 outage reports make one point clear: network reliability is a shared responsibility between carrier, cloud, and hosting operator. ThousandEyes data shows persistent ISP and public cloud disruptions, with European-headquartered carriers frequently in the blast radius. For website owners, sysadmins, and buyers of VPS or dedicated hardware, the fix is not panic but preparation—measure from outside, demand transit diversity, and design for the hour when a backbone node in Chicago or Stockholm blinks off. Hosting stability in 2026 is less about the server box and more about the routes leading to it.

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