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Calico UK Domain Registration
Domain name registrations with free email and web hosting.
http://domains.cali.co.uk/

Canadian Domain
Provides domain name registration to the Canadian market and a free search for available domain names.
http://www.canadiandomain.com/

CARegistration
Domain name registration service for .ca domains.
http://www.caregistration.com/

CentralNic
UK based global domain registration service.
http://www.centralnic.com/

Cheap Domain Name Registrar
Domain name registration with free email and URL forwarding.
http://www.cheap-domain-name-registrar.com/

CJ's Domains
Single and bulk domain registration service.
http://www.cjsdomains.com

Conexim Australia
Australian domain name registration services - .com.au and gTLDs.
http://domainnames.conexim.com.au/

CoolcomDotCom
Canada .ca domain registration service for Canadian domain names.
http://www.domain.ca/

CyberID
Free UK and International domain name registration with web hosting. Domain parking if you don't want to publish your web site just yet.
http://www.cyberid.co.uk/

Cyberlogic Network
Canadian Internet Service Provider. Domain name registration and web hosting.
http://www.cyberlogic.ca/

Cydian Technologies
Domain name registration, web hosting and marketing services.
http://www.cydian.com/