Abuse.net	Locate the spam-fighters in a particular domain
	APNIC	Asia Pacific Network Information Centre
	ARIN	Find network owners from IP addresses.
	CIRA	Canadian Internet Registration Authority
	GeekTools	Calculators - Software Downloads - Spam Tools - Traceroute - Whois
	JPNIC	Japan Network Information Center
	KRNIC	Korean Network Information Center
	Net Demon	Online spam fighting tools, including decryption and deobfuscation. A shareware version that runs on Windows is available for download.
	NIC.UK	Nominet UK is the registry for .uk
	OpenSRS	My Preferred Registrar.
	ORDB	Open Relay Data Base - see if a server is vulnerable to abuse by spammers.
	Register.com	Yet Another Domestic Registrar
	RIPE	The Registry for IP addresses in Europe
	ROKSO	The Spamhaus Project's Register Of Known Spam Operations
	SpamPal	SpamPal for Windows is free software that can help end users flag email as spam based on it's actual orgin or other criteria.
	Sam Spade	Lots of online look up tools and a free Windows download.
	SpamCon	SpamCon Foundation media archive search
	Spamcop	Easily find where to report spam even when the IP has been disguised in decimal format.
	TWNIC	Taiwan Network Information Center
	UXN	UXN spam combat tools.
	Verio's Whois.net	You used to be able to search for domains that include keywords. The site is completely crippled and useless now. Verio are long-term notorious spam-supporters and should be avoided.
	VeriSlime	VeriSlime - the valve of of distrust. Avoid at all costs. Formerly Network Solutions, these guys are total scum.
	WebSite.ws	Find out who owns a WS domain.