GeoIP2 Anonymous IP Databases

MaxMind's GeoIP2 Anonymous IP CSV database helps protect your business by identifying proxy, VPN, hosting, and other anonymous IP addresses.

To learn more about the GeoIP2 Anonymous IP database, please visit the GeoIP2 Anonymous IP Database page. If you are interested in purchasing the database, please contact our Enterprise Business team for assistance.

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.

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-Anonymous-IP-CSV_{YYYYMMDD}.zip. The downloaded zip file contains a single directory which in turn contains several files. That directory is named  GeoIP2-Anonymous-IP-CSV_{YYYYMMDD}.

The files in this zip archive are:

LICENSE.txtEnd user license
COPYRIGHT.txtCopyright statement
GeoIP2-Anonymous-IP-Blocks-IPv4.csvCSV file containing data on IPv4 addresses
GeoIP2-Anonymous-IP-Blocks-IPv6.csvCSV 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-Anonymous-IP-Blocks-IPv4.csv and GeoIP2-Anonymous-IP-Blocks-IPv6.csv respectively.





IP network as a string

This is the IPv4 or IPv6 network in CIDR format such as “” 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.



1 if the IP address belongs to any sort of anonymous network. Blank if not.

* Learn more about anonymizer and proxy detection on our Knowledge Base.



1 if the IP address is registered to an anonymous VPN provider. Blank if not.

If a VPN provider does not register subnets under names associated with them, we will likely only flag their IP ranges using the is_hosting_provider flag.

* Learn more about VPNs on our Knowledge Base.



1 if the IP address belongs to a hosting or VPN provider (see description of is_anonymous_vpn flag). Blank if not.

* Learn more about hosting providers used for anonymizing on our Knowledge Base.



1 if the IP address belongs to a public proxy. Blank if not.

* Learn more about public proxies on our Knowledge Base.



1 if the IP address is a Tor exit node. Blank if not.

* Learn more about Tor exit nodes on our Knowledge Base.



1 if the IP address is on a suspected anonymizing network and belongs to a residential ISP. Blank if not.

* Learn more about residential proxies on our Knowledge Base.

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.

Example Files

We maintain example files in CSV and MMDB format. The files contain dummy data rather than real GeoIP data.

CSV Example Files

We maintain examples of the CSV files as they would be downloaded from the account portal:

MMDB Example Files

We maintain test MMDB files on GitHub:

Alternatively, you can view all of our MMDB test data on GitHub.

Database Changes

We may add new data fields to the Anonymous IP 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 September 27, 2023.