MaxMind GeoIP City Database

It is an enhanced version of the free GeoLite City database.

Features:

• General Features:
• Standard binary format, GEO-133, is updated weekly, CSV and GEO-132 formats are updated monthly
• Includes e-mail support
• Site license (all machines within organization)
• 99.8% accurate on a country level, 90% accurate on a state level, 83% accurate for the US within a 25 mile radius. For more details on our city coverage, see GeoIP City Coverage and Accuracy
• Approximately 4,900,000 records.
• Automated updates for binary API database using geoipupdate on Linux/Unix, included in C API
• Optimized binary file for usage in APIs.
• Comma-separated values.
• GeoIP City, ISP and Organization Combined CSV (requires purchase of GeoIP ISP and GeoIP Organization).
• GeoIP City, ISP, Organization, Domain, and Netspeed Combined CSV (requires purchase of GeoIP ISP, GeoIP Organization, GeoIP Domain, and GeoIP Netspeed).
• Includes the following fields:
• Start IP Number
• End IP Number
• Location ID
• Country Code
• State/Region (Region name is available through an external lookup)
• City Name
• Postal Code (US only)
• Latitude
• Longitude
• Metro Code
• Area Code
• Timezone data is available through an external lookup
• Continent data is available through an external lookup
• Open Source binary API available for the following languages:
• PHP (Pure)
• Java
• Perl (XS)
• Perl (Pure)
• Apache
• Python
• MS COM
• C#
• Pascal
• Ruby