Mapping network addresses to geographical locations

A computer-readable storage device storing contents adapted to cause a computing device to perform a method for mapping network addresses to geographical locations, the method comprising:

• for each of a plurality of network addresses in the same range of network addresses:
• retrieving from a server responding to the network address contents of a web page;
• identifying geographical information contained in the contents;
• scoring the identified geographical information;
• processing the scored geographical information to identify a geographical location;
• mapping the network address to the identified geographical location;
• for a selected one of the network addresses, in response to the score established for the geographical information identified in the contents of the server responding to the selected network address:
• determining a geographical location identified for a majority of the plurality of network addresses;
• and
• remapping the selected network address to the determined geographical location.

A system for mapping network addresses to geographical locations, comprising:

• a retrieval component that, for each of a plurality of uniform resource locations, retrieves a web page identified by the uniform resource location from a network address;
• an execution engine that maps network addresses to geographical locations based on geographical information contained in the web page or webpages retrieved from each of those network addresses;
• a correlation component that correlates the geographical information with a geographical location and iteratively clusters the correlations in increasingly larger ranges of network addresses;
• and
• a filter component that filters correlated geographical information by inferring geographical locations for network address ranges for which geographical information could not be mapped by (1) filling in missing geographical location with an identified geographical location when a majority of the network addresses in the range are mapped to the identified geographical location and (2) correcting a geographical location to be the same as the identified geographical location.