The XML Proxy Server runs as a Windows Service (no IIS needed) and listens on port 43, just as a regular Whois server does. It takes a simple string of input and returns the same XML as the web service.
Special features of the installable proxy server:
- Provides a means of limiting quantity and rate of usage by IP address on a local network
- Can cache XML results in a SQL Server database to avoid the cost of duplicate queries
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