My first stab at GeoIP2 is avalable on github:
$ git clone github.com:Tux/GeoIP2 geoip
$ cd geoip
$ wget -q -m -L -nd -np -nH \
http://geolite.maxmind.com/download/geoip/database/GeoLite2-ASN-CSV.z
+ip \
http://geolite.maxmind.com/download/geoip/database/GeoLite2-City-CSV.
+zip \
http://geolite.maxmind.com/download/geoip/database/GeoLite2-Country-C
+SV.zip
$ echo "create database geoip;" | psql -f -
CREATE DATABASE
$ perl geoip
Create table stamps
Create table continent
Create table country
Create table ipv4
Create table provider
Create table city
Create table ipc4
Reading Country info ...
Reading Country IPv4 info ...
Reading Provider IPv4 info ...
Reading City info ...
Reading City IPv4 info ...
Note that loading the database will require quite a bit of memory and may cause your machine to feel sluggish while loading. On my laptop this took 400 seconds. Once the data is in the database, the queries are quick.
$ time perl geoip perlmonks.org
GeoIP data for 66.39.54.27 - www.perlmonks.org:
CIDR : 66.39.0.0/16
IP range : 66.39.0.0 - 66.39.255.255
Provider : pair Networks
City : Pittsburgh, 508, 15203
Country : US United States
Continent : North America
Location : 40.4254 / -79.9799 (1000) 40°25'31.44" / -79°58'
+47.64"
https://www.google.com/maps/place/@40.4254,-79.9799,10z
Timezone : America/New_York
EU member : No
Satellite : No
Anon Proxy: No
0.112u 0.008s 0:00.69 15.9% 0+0k 0+0io 0pf+0w
Enjoy, Have FUN! H.Merijn