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theHarvester is a very simple to use, yet powerful and effective tool designed to be used in the early stages of a penetration test or red team engagement. Use it for open source intelligence (OSINT) gathering to help determine a company's external threat landscape on the internet. The tool gathers emails, names, subdomains, IPs and URLs using multiple public data sources.
Ip to country. Whois made in Java. 3MB in Memory DB - totally fast!!
...B)
RipeIpService.lookUp( IP - address) gives "All info like whois command" (Just only for RIPE's IPs - not all IP-addresses in the world)
Is only tested on Linux and Mac. But with the sourcecode, it should not be hard to change the path's to Windows.
More info:
http://whois.less-is-more.dk/
TADNS is small, portable asynchronous DNS lookup library written in ANSI C. Works on Windows and UNIX. Extremely simple and clean API. The sourcecode resides in single .c file.
IncrediBL is a project that aims to provide a respected and accountable DNSBL service for various communication systems like IRC and e-mail. The code is primarily used by the IncrediBL service itself, but it can also be used to create a separate DNSBL.
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THIS PROJECT HAS MOVED TO GOOGLE CODE!! An authoritative-only DNS server with a pluggable architecture for determining how to resolve each request. New modules may be written in Python to control how names are resolved.
Antdns provides a minimalistic management interface for the database backend of Bind-DLZ. If need be, the open structure of both code and database schema can be exploited to provide a seamless integration within any current website.
This project is an extension of the OpenSRS client code distributed by Tucows. Many additional features and enhancements have been added, making it easier to configure, extend and implement.