2026 Network Outage Report: What Hosting Buyers Should Watch in ThousandEyes Data

Cisco ThousandEyes has published its rolling 2026 internet health check, tracking global network outage events across ISPs, public cloud provider networks, collaboration app networks, and edge services such as DNS, CDN, and security-as-a-service. For hosting buyers, website owners, and sysadmins, these counts are not abstract statistics: each event can mean latency spikes, unreachable control panels, failed migrations, or dropped packets between a VPS and its users. The latest measured week, August 17–23, recorded 534 global outages, with public cloud network disruptions rising 17% week-over-week. This editorial breaks down the trends that matter for European and global hosting operations, and what practical steps reduce operational risk.

Weekly Outage Volume: From Winter Calm to Summer Spikes

The 2026 dataset shows no straight-line improvement. In the opening week of January 5–11, ThousandEyes counted 255 global outage events, with U.S. incidents jumping 90% to 135 versus the prior week. By late February (Feb 23–Mar 1), global totals hit 386, up 62%, and U.S. outages reached 184. March stabilized somewhat (272–325 weekly), but April and May brought renewed volatility: May 11–17 saw 415 global events, a 46% rise, driven largely by cloud network growth.

Summer intensified the load. The week of June 1–7 reported 483 global outages (+69% week-over-week), and late July peaked at 610 (July 20–26). August started with 546 (Aug 10–16) then dipped slightly to 534 (Aug 17–23). ISP-specific outages globally fell from 298 to 252 in that final week (−15%), but U.S. ISP outages still rose 2% to 366 total events when counting all categories. The pattern tells hosting operators that seasonal traffic and provider changes keep baseline disruption high, and yearly comparisons to 2025 archives show similar structural fragility.

Public Cloud and Edge Networks: The Growing Pain Point

Public cloud network outages are the most concerning category for VPS, cloud, and WordPress hosting users. In the week of July 6–12, global cloud outages jumped 72% to 234, with U.S. cloud events up 84% to 221. Mid-May showed a similar surge: global public cloud outages rose 90% to 196, U.S. up 98% to 174. By Aug 17–23, cloud network outages reached 189 globally (+17%) and 174 in the U.S. (+22%). Edge networks—including DNS, CDN, and SECaaS—are bundled in the totals, but specific incidents reveal the mechanics.

On February 20, Cloudflare’s Bring Your Own IP (BYOIP) service failed for about 1 hour 40 minutes after an automated maintenance task withdrew customer IP advertisements, causing connection timeouts for end users. On July 23, Microsoft’s West US region suffered a 1-hour-3-minute network outage when a routine maintenance bug removed IP routes between a datacenter and the WAN, expanding from San Jose and Los Angeles to many U.S. nodes and impacting downstream partners in 15+ countries. Separate reporting (Aug 11) notes an Azure storage misconfiguration disrupting VMs and identity services for over 10 hours—a reminder that backend faults may not appear as pure “network” loss but still break hosting workloads. Collaboration app outages remained near zero most weeks, so conferencing is not the weak link; transit and cloud fabric are.

For a more detailed walkthrough of this part of the topic, read Cloudflare report: DDoS attacks explode in 2025 – What hosting customers should know and do.

Tier 1 Carriers and Transit Providers: Geographic Blast Radius

Many outages originate with Tier 1 transit providers that hosting companies depend on for upstream connectivity. Arelion (formerly Telia Carrier, headquartered in Stockholm) appears repeatedly: August 21 saw a 1-hour-21-minute disruption spanning 30+ regions (U.S., France, Singapore, Germany, U.K., and more), beginning at Chicago nodes and cascading to Atlanta, Seattle, Dallas, San Jose, Sweden, and the U.K. Similar Arelion events hit July 2 (51 minutes), June 2 (15 minutes), and March 20 (1h38m). Cogent, Zayo, GTT, Lumen, AT&T, Comcast, Cox, Charter, Verizon, Hurricane Electric, PCCW, and TATA Communications all show node-level outages across the report. Even a hosting-focused provider, Madgenius, recorded outages in January and February centered on Columbus, OH nodes.

The data confirms that Chicago, IL is a recurring convergence point for U.S. impairment, and that a single metro node failure can propagate to multiple states and countries within minutes. For European hosting buyers, Liberty Global (July 30) and Arelion (Sweden) demonstrate that transatlantic routes are not insulated. If your dedicated server or cloud instance sits behind one of these carriers, you inherit their blast radius unless you have multi-homed connectivity.

Operational Impact and Mitigation Priorities for Hosting Operators

Who is affected? Anyone running a website, API, or mail server on shared, VPS, or dedicated infrastructure. Why does it matter? Because latency and packet loss degrade SEO, checkout conversion, and backup reliability; prolonged cloud outages block VM orchestration and identity auth. The tradeoffs are clear: single-region cloud is cheap but fragile; multi-region or hybrid setups cost more and add operational complexity. ThousandEyes’ own 2025 retrospective notes that “if the network seems healthy but users are experiencing issues, the problem might be in the backend,” urging teams to investigate combined signals rather than single symptoms.

For self-managed infrastructure, security patches remain relevant: Cisco recently issued emergency fixes for Firepower Management Center flaws (CVE-2026-20079, CVE-2026-20131) with no workarounds if exposed to the internet. While not a transit outage, an unpatched management interface can magnify downtime via exploitation. Hosting operators should treat network health, backend monitoring, and security hardening as one resilience program.

Key Takeaways:

Monitor weekly ThousandEyes-style reports for ISP and cloud outage trends in your provider’s region.
Choose hosting with multi-homed transit (≥2 upstream carriers) to avoid single Tier 1 failure.
Deploy cloud/VPS workloads across ≥2 availability zones or regions with automated failover.
Track edge services (DNS, CDN) separately; Cloudflare BYOIP showed config bugs can withdraw routes.
Keep offline backups and test restores; outages ranged from 9 minutes to 10+ hours in 2026 data.
Review provider maintenance windows; Microsoft and Cloudflare incidents stemmed from automated tasks.
Patch or restrict management interfaces (e.g., Cisco FMC) to shrink attack surface during outages.

The 2026 outage corpus makes one conclusion unavoidable: network disruption is a persistent operating condition, not a rare exception. Hosting buyers who treat upstream transit, cloud region selection, and edge DNS as core procurement criteria will absorb less pain when the next Arelion or Azure event lands. Independent monitoring, geographical redundancy, and tested recovery paths remain the only reliable antidotes to a global internet that reports 500+ weekly outages.

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