Upgrade instructions:
1. Add Firefox browser support
2. The query history display is optimized, and only one duplicate record is displayed;
3. Correct the incorrect format of the history URL to facilitate search engine crawling;
Main functions:
1. Enter the domain name or IP address to query the geographical area;
2. DIV+CSS template is easy to modify;
3. You can upgrade and update the IP database by yourself;
3. Free, open source programs.
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