Canadian Presence Requirements Registration policies that require registrants to have a connection to Canada in order to register a .ca domain name, and to specify that connection when registering the domain by indicating the correct legal type.

CIRA Canadian Internet Registration Authority, the central registry for all .ca domain names.

Conflicting Domains The same domain name registered at 2 different levels of the .ca registry, such as thisdomain.ca and thisdomain.bc.ca.

Domain Names An alphanumeric name registered to an owner to point to email, web and other internet related services.

Legal Type Catagories specifying what a registrants connection to Canada is, such as being a citizen or a registered corporation.

Nameservers The machines which direct domain names to the IPs and servers that make them function. There are 2 ways nameservers are used. Authoritative nameservers keep the records for a given domain name which are the final authority on where it resides. Local resolution nameservers are the machines that look for a domain name when you try to access it through your ISP.

Registrant The individual or company registering the domain, the domain's owner.

Registrar Company that handles the process of registering a domain name and maintains the whois record and rootserver entries for it. Usually the company the domain was purchased through.

Registry The company that maintains the definitive list of domains registered for all registrars to work with.

TLD Top Level Domain, the final identifier in a domain name, eg. .com, .net, .org, .ca, .biz, .info. In some cases, most commonly country code domains, has 2 levels in it, such as .org.uk or .com.au.

Whois Record The file containing the ownership and contact information for a domain, as well as the nameservers authoritative for it. This record is maintained by the registrar of the domain, and filed with the root servers which are operated by the domain name registry.