http://catalogo.terra.com.mx/000005/plan.htm

http://www.who.is/whois/quimiplast.com/

http://www.who.is/whois/qualli.com/

http://www.robtex.com/dns/www.jornaldosdesportos.com.html

http://ubuntuforums.org/archive/index.php/t-937184.html

http://www.terra.com.co/terra_empresas/desarrollo_y_diseno/05-09-2005/nota242476.html

http://www.terra.com.mx/terraempresas/articulo/120318/

http://www.cis.uab.edu/forensics/blog/08aug08.domains.whois.xls

http://oucsace.cs.ohiou.edu/~tysko/scanattack.2001.09

http://www.bolsayfondosdeinversion.es/catnews-32.html