CheckUpstream does not yet run an independent probe against Tailscale, so no availability figure is published for it — only Tailscale's own disclosure record below. 8 incidents were recorded in the past 12 months; the most recent resolved 3 days ago after 3 hours. Status signals are polled from Tailscale's official Atlassian Statuspage status page, alongside independent probes and community reports.
We run no independent probe against Tailscale yet, so we publish no availability figure for it. What follows is Tailscale's own disclosure record, which is a different thing.
Vendor disclosed: 8 incidents · 357 of 365 days with none posted · 19h 39m of declared impact
Fewer incidents in the last 30 days than 15% of 232 tracked services.
Share of each window with no impact declared by Tailscale
7d
99.481%
30d
97.587%
90d
99.090%
180d
99.545%
1y
99.776%
Downtime like this can be refundable
If you're a paying Tailscale customer, outages in these windows may count against Tailscale's SLA — vendors owe service credits for missed uptime targets, but only if you file inside the deadline. CheckUpstream tracks the entitlement, drafts the claim, and hands you the filing link.
A Tailscale outage only matters if something you ship depends on it. Point us at a public repository and we will read its dependencies and tell you — no account, nothing stored.
Time to resolve, from Tailscale's own incident posts (1 year)
Median time to resolve
2h 20m
Slowest 10% take longer than
18h 29m
From 8 incidents Tailscale published and resolved in the last 1 year, measured between their own start and resolution times. It describes how long Tailscale takes to close an incident they have acknowledged — not how often they have them, and not how available they were.
GitHub READMEs, GitLab, MDX docs — links to the live reliability page.
Frequently Asked Questions
›Is Tailscale currently down?
Tailscale is currently Operational. CheckUpstream tracks Tailscale in real-time across the official status page, RSS / Atom feeds, and community telemetry. Refresh this page for the latest reading.
Tailscale's last resolved incident started 3 days ago and lasted 2h 54m (degraded performance).
›What's Tailscale's 30-day uptime?
We don't publish one. CheckUpstream runs no independent probe against Tailscale yet, and the only other figure available would be derived from Tailscale's own incident posts — which measures how much a vendor discloses rather than how available it was. Vendors that post often score worse than vendors that stay quiet, so the number would be backwards.
›How do I monitor Tailscale in production?
Sign up to CheckUpstream and add Tailscale to a watchlist. We send incident alerts via Slack, email, webhook, or PagerDuty within seconds of detection, covering both the official status page and community signals (HN, Reddit, Bluesky, Cloudflare Radar).
›How does CheckUpstream track Tailscale?
We poll Tailscale's official status page on a 1-5 minute cadence, parse its RSS / Atom feed as a fallback, ingest community signals from social platforms, and aggregate per-org SDK telemetry. Multiple sources reduce false positives versus any single feed alone.