What is domain authority?

Domain Authority is an SEO score that predicts how well a website will rank on search engines. A website’s domain authority is based on:

  • inbound links (also called back links),
  • number of total links,
  • age of domain,
  • domain trust, (real words)
  • domain length, (shorter the better)
  • keyword(s),
  • brand name,
  • number of keywords (one is best), and
  • about 200 other factors.

What are domains?

Domains are also called domain names. Domains are the unique portions of each website’s address.

Domains are the unique, human-readable Internet addresses of websites. Domains usually comprise two parts:

  1. A top-level domain (sometimes called an extension or domain suffix), and
  2. Domain keyword(s) (or IP address).

So a domain keyword is the second level of a domain’s hierarchy (after the top-level domain).

An optional subdomain, such as .on.ca or .co.uk, is rarely used anymore. Subdomains are no longer desirable because they create confusion and increase the chance of error in typing in a URL.

Domains are purchased from registrars or domain owners. The following are example domains:



What is a URL?

A URL is a website’s complete address, including the protocol.   The “https://” is part of a page’s URL but not its domain name and is known as the “protocol.”


What is a ccTLD?

ccTLD stands for Country Code Top Level Domain. This is the last part of a domain name that contain a country code: .ca or .us instead of .com or .org. (Trivia: the ccTLD system was created in 1984, when the early Internet was still called ARPA-Internet.)