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Rete / ISP
ISP Google LLC
Organizzazione Google LLC
ASN AS15169
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Google LLC · AS15169
Launched on 3 December 2009, Google Public DNS at 8.8.8.8 is one of the most queried IP addresses on the internet. It is a free, recursive DNS service that anyone can configure on their router, computer, or phone to replace their ISP-provided resolver. Google operates this service from anycast points of presence around the world, so a query to 8.8.8.8 is automatically routed to the nearest Google data center.
Users typically switch to 8.8.8.8 when their ISP DNS is slow, unreliable, or performs DNS-based filtering or redirection. Network admins use it as a fallback resolver. Developers point to 8.8.8.8 in tests because it is universally reachable and stable. Many home routers ship with Google DNS as a default secondary resolver.
8.8.8.8 is part of the 8.8.8.0/24 network, announced by Google under ASN AS15169. Google also operates a secondary resolver at 8.8.4.4 and IPv6 equivalents at 2001:4860:4860::8888 and 2001:4860:4860::8844. The service supports DNS-over-TLS (DoT) on port 853, DNS-over-HTTPS (DoH) at dns.google, and standard UDP/TCP on port 53. DNSSEC validation is enabled by default.
Google publishes a privacy notice for Public DNS. Queries are logged temporarily (within 24-48 hours) with the full IP, then anonymized to the /24 subnet for IPv4. Logs are retained for trend analysis but Google states they are not used for advertising. Privacy-focused users often prefer 1.1.1.1 (Cloudflare) or 9.9.9.9 (Quad9), which have stricter no-log policies.
Yes — it is an official, free service from Google. It does not modify or block any websites; it simply resolves domain names to IP addresses.
It can, if your ISP DNS is slow. For most home users the speed difference is a few milliseconds — noticeable on first lookups, negligible on cached ones.
In Windows: Network adapter → Properties → IPv4 → Use the following DNS servers → 8.8.8.8 and 8.8.4.4. On macOS: System Settings → Network → DNS. On routers: see the manufacturer settings.
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