Your Privacy
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This document provides important information about the data that we collect
when you use Google Public DNS, how long we store it, and how we use it. You
can also read our Terms of Service.
Our Commitment
We take your privacy very seriously. Google Public DNS adheres to the
Google Privacy Policy. Moreover, Google does not use any personal
information collected through the Public DNS service to target ads.
We do not correlate or associate personal information in Google Public DNS
logs with your information from use of any other Google service except for
addressing security and abuse.
The information that we collect about your DNS queries is stored in two types
of logs, each detailed below:
Temporary DNS Logs
Temporary logs are the only logs that store both your IP address and your DNS
query. Specifically, the temporary logs include:
- the IP address of your device sending the DNS query
- the technical information collected for Permanent Logs (see below)
- for DNS-over-HTTPS (DoH): the Content-Type and Accept HTTP headers
These logs are subject to our deletion processes within 24-48 hours. They are
only used for the following reasons:
- to identify and mitigate security threats or activity that we deem abusive
or otherwise malicious,
- to fix, maintain, and improve Google DNS services, and
- to generate aggregate non-personally identifiable DNS usage summaries.
To address security and abuse issues, we may retain information from the
temporary logs for longer than 48 hours, in each case solely for the limited
purpose of resolving such issues.
Permanent DNS Logs
The permanent logs are a sampling of the temporary logs where your IP address
is removed and replaced by a city or region-level location. Thus, the
permanent logs contain no personal information about you. The following
information is logged in the permanent logs:
- Requested domain name
- Request type (
A , AAAA , NS, MX, TXT, etc.)
- Transport protocol (
TCP, UDP, TLS, or HTTPS)
- Client's autonomous system number
- User's geolocation: country, region, and city (no more specific than 1 km²
and 1000 users)
- DNS Response code
- Google DNS server information
- Timestamp
- Processing time
- Response DNS flags (including
AD, CD, DO, RD, and TC)
- Response size
- EDNS version
- EDNS option
- EDNS Client Subnet (ECS) (IP protocol and prefix length -- excluding the
client IP address)
- For DNS-over-HTTPS (DoH):
- Version string corresponding to HTTP path (
/dns-query or /resolve)
- Response HTTP encoding, such as
application/dns-message or json
Previous Versions
You can see all past versions of this policy.
Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],[],[[["\u003cp\u003eGoogle Public DNS adheres to the Google Privacy Policy and does not use personal information for targeted advertising.\u003c/p\u003e\n"],["\u003cp\u003eGoogle Public DNS collects temporary logs (including IP address and DNS query) that are deleted within 24-48 hours and permanent logs (with IP address replaced by city or region) for aggregate, non-personally identifiable data.\u003c/p\u003e\n"],["\u003cp\u003eTemporary logs are used for security, service improvements, and aggregate usage summaries, while permanent logs retain anonymized data for analysis.\u003c/p\u003e\n"],["\u003cp\u003eGoogle may retain temporary log information longer than 48 hours only to address security or abuse issues.\u003c/p\u003e\n"]]],["Google Public DNS collects data in temporary and permanent logs. Temporary logs, kept for 24-48 hours, include IP addresses, query information, and HTTP headers, used for security, maintenance, and usage summaries. Permanent logs retain sampled data, excluding IP addresses, and includes query details, location data (city/region level), transport protocols, and response data. Personal information in the temporary logs may be retained longer to address security and abuse. The policy emphasizes no ad targeting with collected data.\n"],null,["# Your Privacy\n\n| **Note:** This is an archived version of our Privacy Policy. View the [current version](/speed/public-dns/privacy) or [all past versions](/speed/public-dns/archive/privacy-changes).\n\nThis document provides important information about the data that we collect\nwhen you use Google Public DNS, how long we store it, and how we use it. You\ncan also read our [Terms of Service](/speed/public-dns/archive/terms).\n\nOur Commitment\n--------------\n\nWe take your privacy very seriously. Google Public DNS adheres to the\n[Google Privacy Policy](https://policies.google.com/privacy). Moreover, Google does not use any personal\ninformation collected through the Public DNS service to target ads.\n\nWe do not correlate or associate personal information in Google Public DNS\nlogs with your information from use of any other Google service except for\naddressing security and abuse.\n\nInformation that we collect\n---------------------------\n\nThe information that we collect about your DNS queries is stored in two types\nof logs, each detailed below:\n\n- [Temporary DNS Logs](#temporary-dns-logs)\n- [Permanent DNS Logs](#permanent-dns-logs)\n\n### Temporary DNS Logs\n\nTemporary logs are the only logs that store both your IP address and your DNS\nquery. Specifically, the temporary logs include:\n\n- the IP address of your device sending the DNS query\n- the technical information collected for Permanent Logs (see below)\n- for DNS-over-HTTPS (DoH): the Content-Type and Accept HTTP headers\n\nThese logs are subject to our deletion processes within 24-48 hours. They are\nonly used for the following reasons:\n\n- to identify and mitigate security threats or activity that we deem abusive or otherwise malicious,\n- to fix, maintain, and improve Google DNS services, and\n- to generate aggregate non-personally identifiable DNS usage summaries.\n\nTo address security and abuse issues, we may retain information from the\ntemporary logs for longer than 48 hours, in each case solely for the limited\npurpose of resolving such issues.\n\n### Permanent DNS Logs\n\nThe permanent logs are a sampling of the temporary logs where your IP address\nis removed and replaced by a city or region-level location. Thus, the\npermanent logs contain no personal information about you. The following\ninformation is logged in the permanent logs:\n\n- Requested domain name\n- Request type (`A` , `AAAA` , `NS`, `MX`, `TXT`, etc.)\n- Transport protocol (`TCP`, `UDP`, `TLS`, or `HTTPS`)\n- Client's autonomous system number\n- User's geolocation: country, region, and city (no more specific than 1 km² and 1000 users)\n- DNS Response code\n- Google DNS server information\n- Timestamp\n- Processing time\n- Response DNS flags (including `AD`, `CD`, `DO`, `RD`, and `TC`)\n- Response size\n- EDNS version\n- EDNS option\n- EDNS Client Subnet (ECS) (IP protocol and prefix length -- excluding the client IP address)\n- For DNS-over-HTTPS (DoH):\n - Version string corresponding to HTTP path (`/dns-query` or `/resolve`)\n - Response HTTP encoding, such as `application/dns-message` or `json`\n\nPrevious Versions\n-----------------\n\nYou can see [all past versions](/speed/public-dns/archive/archive/privacy-changes) of this policy."]]