{"slug":"troubleshoot-tailscale-domains-and-sites-unreachable","title":"Troubleshoot Tailscale domains and sites unreachable","tags":["tailscale","networking"],"agent_summary":"Last validated: Mar 16, 2026","trigger_phrases":[],"runnable":false,"markdown":"\r\n# Troubleshoot Tailscale domains and sites unreachable\r\n\r\nLast validated: Mar 16, 2026\r\n\r\nIf your network and internet connectivity are working as expected, but you cannot reach any of the Tailscale sites, including our corporate site, documentation, and admin console, this may be because we were erroneously added to an internet blocklist. To prevent temporary DNS blocking to our sites, we recommend adding the following entries to your DNS service allowlists.\r\n\r\n```shell\r\n*.tailscale.com\r\n*.tailscale.io\r\n```\r\n\r\nWe support a wide variety of DNS services, including [Control D](https://tailscale.com/docs/integrations/control-d), [Linux DNS](https://tailscale.com/docs/reference/linux-dns), [NextDNS](https://tailscale.com/docs/integrations/nextdns), and [Unbound DNS in OPNsense](https://tailscale.com/docs/integrations/firewalls/opensense-unbound).\r\n\r\n![Project Logo](https://cdn.brandfetch.io/tailscale.com/fallback/lettermark/theme/dark/h/256/w/256/icon?c=1bfwsmEH20zzEfSNTed)\r\n\r\nAsk AI\r\n\r\nreCAPTCHA\r\n\r\nRecaptcha requires verification.\r\n\r\nprotected by **reCAPTCHA**\r\n","html":"<h1>Troubleshoot Tailscale domains and sites unreachable</h1>\n<p>Last validated: Mar 16, 2026</p>\n<p>If your network and internet connectivity are working as expected, but you cannot reach any of the Tailscale sites, including our corporate site, documentation, and admin console, this may be because we were erroneously added to an internet blocklist. To prevent temporary DNS blocking to our sites, we recommend adding the following entries to your DNS service allowlists.</p>\n<pre><code class=\"language-shell\">*.tailscale.com\r\n*.tailscale.io\n</code></pre>\n<p>We support a wide variety of DNS services, including <a href=\"https://tailscale.com/docs/integrations/control-d\">Control D</a>, <a href=\"https://tailscale.com/docs/reference/linux-dns\">Linux DNS</a>, <a href=\"https://tailscale.com/docs/integrations/nextdns\">NextDNS</a>, and <a href=\"https://tailscale.com/docs/integrations/firewalls/opensense-unbound\">Unbound DNS in OPNsense</a>.</p>\n<p><img src=\"https://cdn.brandfetch.io/tailscale.com/fallback/lettermark/theme/dark/h/256/w/256/icon?c=1bfwsmEH20zzEfSNTed\" alt=\"Project Logo\"></p>\n<p>Ask AI</p>\n<p>reCAPTCHA</p>\n<p>Recaptcha requires verification.</p>\n<p>protected by <strong>reCAPTCHA</strong></p>\n"}