Domain name registration Canada

26 Jun

What is a domain name? What is a domain name server?

Register your name buy domain and hosting services , you have to buy the domain name resolves the host, to see the site content. In most cases, changing the DNS domain name server, and you can not immediately see the site's content, but few hours, or even one or two days to open your site.

To understand why the domain name resolution so long, we must understand the resolution process Domain Name and DNS server role.

Each computer on the Internet is assigned an IP address, data transfer is actually carried out between different IP addresses. For example, the use of computers at home, connect to the Internet in the future have also been assigned an IP address, IP address, most cases, it is dynamic. This means that you turn off the modem, re-open Internet, Internet access were randomly assigned to a new Chamber of Commerce IP address.

Web server is essentially a computer station with Internet access, but the configuration is more suitable as a server, and in the center data, keeping the temperature low, low dust environment, but there are security measures. These servers use a fixed IP address connected to the Internet.

A domain name resolution to a server and files page on this server, the computer user to know which server for the domain information website name. This is achieved through domain name server.

domain name server is the acronym for English for Domain Name Server. Each domain name must have at least two DNS servers, so if a DNS server problem, the other can return the data in this domain. DNS server can have more than two, but all these DNS servers DNS records must be the same.

In the DNS server to maintain a record of the DNS domain name such as A records, MX records. A record is used to specify the host name (or domain) the corresponding IP address. MX records to resolve mail server name. In many cases.

When a viewer in the browser address box in a name, or click on a link from another site for this domain name, browser access to Internet domain name of the user to send the request, access providers DNS server to query database of domain names, see the DNS domain name server. Track and then the server's DNS records DNS, it is to get the domain name point to which the IP address. Access to IP information, go to the access provider's server to the IP address for the server to track the content, and then transmitted to the browser.

This process is described is quite complex, but in reality, less than a second or two to complete.

the domain name resolution takes a long time reason is because Internet access providers, such as Beijing Telecom and telecommunications Henan, in order to accelerate the pace of the user opens the page, usually in their DNS servers cache the DNS records of many domain name. Customers to the supplier Access to open a Web page, the access provider's server domain names need to query the database, but to their own cache of DNS records used directly to accelerate access to the site. This is the advantage.

Drawback is that Internet service providers ISP cache is stored for some time, just when you update as necessary, but no frequency shift pattern. Some ISPs can be updated one hour, some may take up to 12 days before the upgrade.

Therefore the domain name registration new analytical Fandao faster overall. Since all ISPs are not stored in cache, user access to query when the ISP is the domain database, get the latest DNS data.

The old domain name if you change the DNS records, but other ISP world data cache is not updated immediately. So different users in different ISP, and some can be relatively quick access to records New DNS, and some have to wait until the next update ISP cache.

Finally, a note of the matter is, DNS server and Web server may be the same provider, can also be different. Web hosting providers usually also provide their own DNS server, so the user only to point your domain name web hosting providers own domain name server on it. Some users like to use the domain name registration providers DNS Server service, this time the user must at the DNS server, domain name registration companies to change the DNS records, such as A, MX records to that the IP address of virtual hosting providers.

Want to learn more here: http://myhosting.com

About the Author

Canadian Internet Registration Authority (CIRA) - Public Mandate

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