What is a Domain Name?
A domain name or domain is a structured label which is connected to a specific IP (Internet Protocol) address of a server where the web page is being hosted. Here’s an example: https://webdesign-spain.com is a domain name of our own site. You’ll notice we said that domains are structured labels. Let’s have a look at the structure of the domain.
your domain consists of at least two parts: the actual domain name and the TLD (Top Level Domain). In our webdesign-spain.com example, “.com” is the TLD and the “domain” part is a domain name or domain label we chose for our site. You’ve surely heard of some other top-level domains like .CO.UK, .NET, .ORG, .INFO, .US etc.
Domains are under the jurisdiction of ICANN, the Internet Corporation for Assigned Names and Numbers which is responsible for creating new and maintaining current top-level domains.
On the other hand, you can choose your domain name and register it with a domain name registry. So, if you want to register “i-like-this.com”, go on ahead!
Now you know that a domain name consists of an actual name and the TLD suffix. There is also something called a subdomain, which is the third-level of a domain. If you own “john.i-like-this.com” domain, “.COM” is top-level domain, “i-like-this” is the level 2 domain name and “john” is the subdomain of “i-like-this” domain. It’s really not that complicated; just follow the hierarchy from right to left.
What is DNS?
By now, you have learned what domains are and that they consist of a domain name and TLDs like .CO.UK or .COM. You also know that websites are hosted on servers all over the world. The problem is, the servers aren’t really recognized by domain names. They’re actually recognized by IP addresses. A typical IP address looks something like 18.104.22.168 (which happens to be the IP address of this blog; try to enter it into your browser, you should end up on our website).
DNS stands for Domain Name System and it is a set of specialized DNS servers that have only one purpose: they serve as a database, or to be more precise – they serve as a phone book for connecting IP addresses with corresponding domain names. These servers are called name servers.
How DNS Works?
The sole purpose of the DNS system is to make your browsing more comfortable. You really don’t want to remember all those number-dot-numbers-dot-more-numbers, right? It’s a lot easier to remember webdesign-spain.com or some other domain. When you enter that pretty domain name, the browser will search through the DNS system and find the exact IP address of the corresponding website.
This is where domain name hierarchy really shines; if you want to open webdesign-spain.com, the browser will first go to the root DNS records and try to find all the name servers within the .com top-level domain. It will then go to the first server on the list and try to find the actual IP address which is connected to webdesign-spain.com. Once found, the browser knows the IP address of the “webdesign-spain.com” domain and opens up the site. A lot more practical than remembering a string of numbers and dots !
Your Hosting company will usually serve you with 2 or more Domain Name System address’s as your files will be saved on to 2 or more servers to allow for “uptime” and maintenance issues on the server at any one time, see how this works in the diagram below:
http//: or https//:
You click to check out at an online merchant. Suddenly your browser address bar says HTTPS instead of HTTP. What’s going on?
Is your credit card information safe?
Good news. Your information is safe.
The website you are working with has made sure that no one can steal your information.
Instead of HyperText Transfer Protocol (HTTP), this website uses HyperText Transfer Protocol Secure (HTTPS).
Using HTTPS, the computers agree on a “code” between them, and then they scramble the messages using that “code” so that no one in between can read them. This keeps your information safe from hackers.
They use the “code” on a Secure Sockets Layer (SSL), sometimes called Transport Layer Security (TLS) to send the information back and forth.
How do I choose a Domain Name?
Find out here