When the Domain Name System was devised in the 1980s, the domain name space was divided into two main groups of domains.[7] The country code top-level domains (ccTLD) were primarily based on the two-character territory codes of ISO-3166 country abbreviations. In addition, a group of seven generic top-level domains (gTLD) was implemented which represented a set of categories of names and multi-organizations.[8] These were the domains gov, edu, com, mil, org, net, and int.

1 : any of the three-dimensional subunits of a protein that together make up its tertiary structure, that are formed by folding its linear peptide chain, and that are variously considered to be the basic units of protein structure, function, and evolution immunoglobulin light chains have two domains and heavy chains have four or five domains, depending on class — Journal of the American Medical Association
Name servers. Most registrars provide two or more name servers as part of the registration service. However, a registrant may specify its own authoritative name servers to host a domain's resource records. The registrar's policies govern the number of servers and the type of server information required. Some providers require a hostname and the corresponding IP address or just the hostname, which must be resolvable either in the new domain, or exist elsewhere. Based on traditional requirements (RFC 1034), typically a minimum of two servers is required.
WordPress hosting prices are all over the map. Entry-level plans should cost roughly the same as shared web hosting, but higher-tier plans can scale upward to around $60 per month. The upside? Your WordPress installation should run more smoothly and setup should be easier in a WordPress environment than in a traditional hosting environment. In addition, going the managed WordPress route may save you money in the long run, as it might save you the cost of hiring a system administrator to perform the same tasks. This can be particularly beneficial to small businesses.
If your website needs a larger amount of resources than most, you may be better served with more advanced hosting, like Business Hosting or a Virtual Private Server. Furthermore, if you are running a large e-commerce platform or online store, you may want the extra horsepower that a VPS or dedicated server provides. But for the vast majority of businesses, GoDaddy shared web hosting will be more than enough for your website or blog.
Well ultimately it comes down to how comfortable you are with managing a website. But even if you’ve handled the install process for a WordPress site before, and you know how to update everything on a regular basis, we make managing WordPress easy. Don’t stress about doing all the heavy lifting and let us do it for you. When it comes down to it, WordPress Hosting just makes your life easier. And isn’t that worth the cost?
The Pro 5 plan (starts at $24.99 per month) comes with five domains, 50GB of storage, five staging areas, site backup (for up to 90 days), and a free SSL certificate. Pro 10 (starts at $49.99 per month) ups the domains to 10, storage to 80GB, and staging areas to 10. Pro 25 (starts at $89.99 per month) builds on Pro 10 by offering 25 domains, 25 staging areas, and 100GB of storage. Pro 50 (starts at $169 per month) serves up 50 domains, 200GB of storage, and 50 staging areas. Please note that the renewal prices are the same as the starting prices.
Next are third-level domains, which are written immediately to the left of a second-level domain. There can be fourth- and fifth-level domains, and so on, with virtually no limitation. An example of an operational domain name with four levels of domain labels is sos.state.oh.us. Each label is separated by a full stop (dot). 'sos' is said to be a sub-domain of 'state.oh.us', and 'state' a sub-domain of 'oh.us', etc. In general, subdomains are domains subordinate to their parent domain. An example of very deep levels of subdomain ordering are the IPv6 reverse resolution DNS zones, e.g., 1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa, which is the reverse DNS resolution domain name for the IP address of a loopback interface, or the localhost name.
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