What are second-level domains (SLD) and country code second level domains (ccSLD)?

A second-level domain (SLD) is the portion of the domain name that is located immediately to the left of the dot and domain name extension. Example 1: The SLD in coolexample.com is coolexample. Example 2: The SLD in coolexample.co.uk is still coolexample. You define the SLD when you register a domain name. A country code second-level domain (ccSLD) is a domain name class that many country code top-level domain (ccTLD) registries implement. The ccSLD portion of the domain name is located between the ccTLD and the SLD. Example: The ccSLD in coolexample.co.uk is .co.
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What are top-level domains (TLD)?

A top-level domain (TLD) is the part of the domain name located to the right of the dot (" . "). The most common TLDs are .com, .net, and .org. Some others are .biz, .info, and .ws. These common TLDs all have certain guidelines, but are generally available to any registrant, anywhere in the world. ICANN identifies the following categories of TLDs: Country-code top-level domains (ccTLD) -- Each ccTLD identifies a particular country and is two letters long. The ccTLD for the United States, for example, is .us Infrastructure top-level domain -- There is only one TLD in this group, ARPA (Address and Routing Parameter Area). The Internet Assigned Numbers Authority (IANA) manages this TLD for the IETF. Sponsored top-level domains (sTLD): These are overseen by private organizations. Generic top-level…
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WHAT IS A DOMAN NAME and How do domain names work?

WHAT IS A DOMAN NAME? Unless you are physically running a website, you may not know exactly what a domain name is or how it works. The simple answer is that a domain name is the address that the browser uses to find a website. Domain names are used in web addresses (www.domainname.com) and in an email address (any@domainname.com). It is a unique identifier for a website or email account.There are two parts to every domain name; a second-level domain and a top-level domain. The top-level domain is the ending notation of the domain name. Examples of the top-level portion of a domain name is .com, .net or .edu. Some top-level domains are restricted for use with only certain type of organizations or countries. For instance, .edu is reserved for…
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What is gTLD — Generic Top Level Domain

A gTLD is a generic top-level domain name. These are not linked to geographical regions or special authorities. gTLDs are typically used to describe organizations and businesses. Most TLDs with three or more characters are referred to as "generic" TLDs, or "gTLDs". They can be subdivided into two types, "sponsored" TLDs (sTLDs) and "unsponsored TLDs (uTLDs), as described in more detail below. In the 1980s, seven gTLDs (.com, .edu, .gov, .int, .mil, .net, and .org) were created. Domain names may be registered in three of these (.com, .net, and .org) without restriction; the other four have limited purposes. Over the next twelve years, various discussions occurred concerning additional gTLDs, leading to the selection in November 2000 of seven new TLDs for introduction. These were introduced in 2001 and 2002. Four…
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What is IDNs ( Internationalized Domain Names ) ?

IDNs are domain names that include characters used in the local representation of languages that are not written with the twenty-six letters of the basic Latin alphabet "a-z". An IDN can contain Latin letters with diacritical marks, as required by many European languages, or may consist of characters from non-Latin scripts such as Arabic or Chinese. Many languages also use other types of digits than the European "0-9". The basic Latin alphabet together with the European-Arabic digits are, for the purpose of domain names, termed "ASCII characters" (ASCII = American Standard Code for Information Interchange). These are also included in the broader range of "Unicode characters" that provides the basis for IDNs. The "hostname rule" requires that all domain names of the type under consideration here are stored in the…
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What is IPv4 and IPv6 ?

There are two versions of Internet Protocol in popular use: version 4 (IPv4) and version 6 (IPv6). IPv4 was developed in the early 1980s. It has capacity of just over four billion IP addresses, almost all of which have now been allocated to Internet service providers and users. An IPv4 address looks like this: 192.0.2.53. IPv6 is the next generation of IP, with a 128-bit address space, providing 340 undecillion addresses. An IPv6 address looks like this: 2001:0db8::53. While the intention is for IPv6 to surpass IPv4 as the commonly used system, this process is ongoing. Adoption is important because IPv4 and IPv6 essentially operate as parallel systems, meaning data cannot be exchanged between these protocols without transition technologies.
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What is RIR — Regional Internet Registry

There are currently five RIRs: AfriNIC, APNIC, ARIN, LACNIC and RIPE NCC. These non-profit organizations are responsible for distributing and managing IP addresses on a regional level to Internet service providers and local registries.
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WordPress

WordPress® is a blog- and Web-publishing platform that's not only easy to use, but recognized the world over as a standard in website creation. With its focus on aesthetics, Web standards and usability, WordPress is an open-source platform that lets you manage everything from a small personal blog to a large commercial site with hundreds of pages. Hundreds of thousands of sites trust their online presence to WordPress – and with Managed WordPress Hosting from POWERHOSTER.COM, you can too.
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www

The www before your domain name is a subdomain, not part of the domain name itself. Therefore, if you set up your www CNAME record to point to your primary A record, your site will resolve both at www.coolexample.com and coolexample.com. If you can reach your website by typing in your domain without the www but cannot reach it when you type the www, then your CNAME might be set up incorrectly. Follow the instructions below to ensure your domain name's settings are correct.
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