geoip

This extension provides IP-based geolocation, i.e. you provide an IPv4 address and the extension looks for info about country, city, GPS etc.

To operate, the extension needs data mapping IP addresses to the other info, but these data are not part of the extension. A good free dataset is GeoLite from MaxMind (available at www.maxmind.com).

Installation

To install the extension, basically all you need to do is this

make install

and then (if you're on PostgreSQL 9.1 or above)

CREATE EXTENSION geoip;

For versions of PostgreSQL less than 9.1.0, you'll need to run the installation script manually:

psql -d mydb -f /path/to/pgsql/share/contrib/geoip--0.3.0.sql

Now you're ready to use the extension. More details about the installation options and issues are available in the INSTALL file.

Using the extension

The extension allows you to search for country, city and ASN. All of that is encapsulated into these functions:

• geoip_country_code(ip4|ip6) - returns country code (2 chars)
• geoip_country(ip4|ip6) - returns all country info (code, name, ...)
• geoip_city_location(ip4|ip6) - returns just location ID (INT)
• geoip_city(ip4|ip6) - returns all the city info (GPS, ZIP code, ...)
• geoip_asn(ip4|ip6) - retusn ASN name and IP range

Using the functions is quite straightforward, especially for functions that return a single value

db=# SELECT geoip_country_code('78.45.133.255'::ip4);

 geoip_country_code 
--------------------
 CZ
(1 row)

db=# SELECT geoip_city_location('78.45.133.255'::ip4);

 geoip_city_location 
---------------------
               21235
(1 row)

The functions that return a tuple are a bit more complicated. Probably the best way to call them is like a SRF:

db=# SELECT * FROM geoip.geoip_city('78.45.133.255'::ip4);

 geoname_id | country_iso_code | city_name | postal_code |  ...
------------+------------------+-----------+-------------+- ...
    3066399 | CZ               | Sardice   | 696 13      |  ...

db=# SELECT * FROM geoip.geoip_country('78.45.133.255'::ip4);

    network     | country_iso_code | country_name 
----------------+------------------+--------------
 78.45.128.0/17 | CZ               | Czechia
(1 row)

db=# SELECT * FROM geoip.geoip_asn('78.45.133.255'::ip4);

   network    | asn_number |      asn_name       
--------------+------------+---------------------
 78.44.0.0/15 |       6830 | Liberty Global B.V.
(1 row)

Sure, you can access the data directly through the tables.

Consistency of data

Correctness of the answers depends on consistency of the GeoIP database.

Loading the data

This extension requires manual downloading and loading the data. Once you have the extension installed (so that the tables exist), go to http://www.maxmind.com and download the GeoLite2 CSV files

• https://dev.maxmind.com/geoip/geoip2/geolite2/

Download all three data sets (City, Country, ASN) in CSV format, and extract them. You'll need these CSV files:

• GeoLite2-City-Locations-en.csv
• GeoLite2-City-Blocks-IPv4.csv
• GeoLite2-City-Blocks-IPv6.csv
• GeoLite2-Country-Locations-en.csv
• GeoLite2-Country-Blocks-IPv4.csv
• GeoLite2-Country-Blocks-IPv6.csv
• GeoLite2-ASN-Blocks-IPv4.csv
• GeoLite2-ASN-Blocks-IPv6.csv

The "locations" files have multiple language variants, so pick the one that works for you. Then simply load the data using COPY command:

$ cat GeoLite2-Country-Locations-en.csv | \
  psql $DBNAME -c 'COPY geoip.geoip_country_locations FROM stdin WITH (FORMAT CSV, HEADER)'

$ cat GeoLite2-Country-Blocks-IPv4.csv | \
  psql $DBNAME -c 'COPY geoip.geoip_country_blocks FROM stdin WITH (FORMAT CSV, HEADER)'

$ cat GeoLite2-Country-Blocks-IPv6.csv | \
  psql $DBNAME -c 'COPY geoip.geoip_country_blocks FROM stdin WITH (FORMAT CSV, HEADER)'

$ cat GeoLite2-City-Locations-en.csv | \
  psql $DBNAME -c 'COPY geoip.geoip_city_locations FROM stdin WITH (FORMAT CSV, HEADER)'

$ cat GeoLite2-City-Blocks-IPv4.csv | \
  psql $DBNAME -c 'COPY geoip.geoip_city_blocks FROM stdin WITH (FORMAT CSV, HEADER)'

$ cat GeoLite2-City-Blocks-IPv6.csv | \
  psql $DBNAME -c 'COPY geoip.geoip_city_blocks FROM stdin WITH (FORMAT CSV, HEADER)'

$ cat GeoLite2-ASN-Blocks-IPv4.csv | \
  psql $DBNAME -c 'COPY geoip.geoip_asn_blocks FROM stdin WITH (FORMAT CSV, HEADER)'

$ cat GeoLite2-ASN-Blocks-IPv6.csv | \
  psql $DBNAME -c 'COPY geoip.geoip_asn_blocks FROM stdin WITH (FORMAT CSV, HEADER)'

Now the data is loaded.

Copyright and License

Copyright (c) 2012 Tomas Vondra The extension is distributed under BSD license (see the LICENSE file)