GeoIP2 Domain Databases
Look up the second level domain names associated with IPv4 and IPv6 addresses.
To learn more about the GeoIP2 Domain database, including terms and pricing, please visit the GeoIP2 Domain Database page.
Data Privacy
To comply with data privacy regulations, please monitor our Do Not Sell My Personal Information Requests page (login required) for IP addresses and networks that should not be used for advertising or marketing purposes. You can automate retrieval of this list using our privacy exclusions API.
Binary Database
Binary databases make use of the MaxMind DB file format. MaxMind provides official client APIs in the language listed below. The following client APIs are open source and licensed under the Apache License, Version 2.0.
You can also use the mmdbinspect tool (in beta), a command line interface built with Go, to look up one or more IPs from one or more MMDB databases and receive output in a parsable JSON format.
| Language or Framework | Documentation | Example |
|---|---|---|
| .NET (C#) | GitHub - Database Usage | Domain Example |
| Java | GitHub - Database Usage | Domain Example |
| Node.js | GitHub - Database Usage | Domain Example |
| PHP | GitHub - Database Reader | Domain Example |
| Python | GitHub - Database Usage | Domain Example |
| Ruby | GitHub - Database Reader | Domain Example |
CSV Database
In addition to our MaxMind DB binary format, we also offer GeoIP2 and GeoLite2 databases in a CSV format suitable for importing into a SQL database. The CSV files are shipped as a single zip file.
The zip file itself is named GeoIP2-Domain-CSV_{YYYYMMDD}.zip. The downloaded zip file contains a single directory which in turn contains several files. That directory is named GeoIP2-Domain-CSV_{YYYYMMDD}.
The files in this zip archive are:
| Filename | Description |
|---|---|
LICENSE.txt | End user license |
COPYRIGHT.txt | Copyright statement |
GeoIP2-Domain-Blocks-IPv4.csv | CSV file containing data on IPv4 addresses |
GeoIP2-Domain-Blocks-IPv6.csv | CSV file containing data on IPv6 addresses |
All the CSV files start with a single header row containing column names. The specific column names and their contents are detailed below. The files are encoded as UTF-8.
Blocks Files
There are two CSV files for network blocks, one each for IPv4 and IPv6 blocks.
These are named GeoIP2-Domain-Blocks-IPv4.csv and
GeoIP2-Domain-Blocks-IPv6.csv respectively.
Name | Type | Description |
|---|---|---|
network | IP network as a string | This is the IPv4 or IPv6 network in CIDR format such as “2.21.92.0/29” or “2001:4b0::/80”. We offer a utility to convert this column to start/end IPs or start/end integers. See the conversion utility section for details. |
domain | string | The domain associated with the IP address. |
Conversion Utility
We've created a small utility program to allow you to convert a GeoIP2 CSV file's representation of IP addresses to another format. You can choose between start/end IP addresses, with the addresses represented as strings or integers.
The program is available from our geoip2-csv-converter GitHub project releases tab.
Database Changes
We may add new data fields to the Domain database at any time.
New database fields are added as new columns to the right of existing columns in our CSV files, and as additional data in our MMDB files.
Subscribe to our GeoIP2 release notes to be notified when new data is added to our databases.
APIs and Third-Party Integrations
You can find a complete list of official and unofficial client APIs, and third-party integrations on the database documentation page.
This page was last updated on June 6, 2023.