Wednesday, 8 July 2015

What is an IP Address or Internet Protocol Address

Every device like Personal Computer, Laptop, Mobile, Smart Phone which is used to access the internet is allotted  a unique number like 125.0.0.1 consisting of four numbers separated by dots. This is what is called Internet Protocol or IP address. This IP Address can provide the General IP information like IP Number, ISP the Internet Service Provider and if Blacklisted or not. Geographical location  information of the IP Address like Country, Region or State, City Name and latitude and longitude information of the location. Thus IP address can be used to identify the ISP, region or country from which the device is getting connected to the Internet. Individual computers or machines have only their individual IP Address. Because the numbers are difficult to remember, IP addresses may be allotted a host name which may be easy to remember. Internet Service providers issue one unique IP address to any one machine. Such IP addresses used to be called static IP addresses. Due to increasing usage of the internet and limited availability of IP addresses the ISPs now issue dynamic IP addresses using the Dynamic Host Configuration Protocol, which is auto configuration protocol used on IP networks. The DHCP also limits the user's ability to host websites, mail servers, FTP servers. When a single machine is allowed to function like multiple machines (with multiple domain names and IP addresses), then such IP address becomes the hosting provider for domain names.

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Tuesday, 7 July 2015

What is a Domain Top Level and Sub Domain

Domain Names

On the internet, all the machines like personal computer, laptop, mobile phones and smart phones etc., communicate with one another through Hyper Text Transfer Protocol (http) and in case of secured socket layer (SSL) the same protocol is called (https). ISP allots IP addresses to such machines. As IP Addresses are difficult to remember, domain names are used to manage, surf and understand the internet or World Wide Web. Without domain names, URLs would be a series of numbers of IP addresses. Domain Names facilitates the internet users to recall the IP addresses. Domain Name facilitates the setting up of a website, sending and receiving email or building an online store. Domain Names are like www.example.com, out of which one has to recall the memorable part of the domain name which is example, used by the public, organizations or business centers to register their domain on the web.

For domain name registration the internet need three parties that Domain Registrant, Domain Registrar and the domain registry. When the public types a domain name in the browser then first of all it creates a DNS query. The query, searches for the IP Address of the domain name and knocks at the Domain Name servers.

While the .com in www.example.com is called top level domain, example (the memorable part of the domain) is called the second level domain and www is called the third level domain. Third level domain does not require any registration whereas TLD can be generic (gTLD) or country code (ccTLD). In www.example.com the TLD .com in generic and it is registered in UK with country code UK it will end up with uk instead of com . The users can know the website with the country codes like in for India. At present there are more than 20 gTLD’s and about 250 ccTLD’s all over the world. Want to know more about Sub Domains, Add On Domains and Parked Domains.

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Happy Janamashtami 2013

Happy Janamashtami 2013
Bal Gopal visiting your Home on 28th. Do not let HIM Go Back