Domain Authority, Domain Rating & Domain Choices for SEO

Domain Authority (DA), Domain Rating (DR), Trust Flow and similar scores are third-party estimates of how strong a website’s backlink profile is. They are useful for comparing sites and choosing link targets, but Google does not use them. This guide explains what they mean, how they are calculated, how to improve them, and the domain decisions that actually affect SEO.

DA, DR, PA and Trust Flow explained

Metric	Tool	What it measures	Scale
Domain Authority (DA)	Moz	Predicted ranking strength based on link profile	0–100
Domain Rating (DR)	Ahrefs	Strength of backlink profile by linking domains	0–100
Authority Score	Semrush	Links, traffic and spam signals	0–100
Page Authority (PA)	Moz	Same as DA but for a single page	0–100
Trust Flow / Citation Flow	Majestic	Quality vs quantity of links	0–100

What these scores are good for

• Comparing your site with competitors over time
• Screening sites for guest posts and link insertions
• Spotting sudden changes in a link profile

What they are not

They are not Google ranking factors, they can be inflated by spam links, and a DR 20 site with real traffic in your niche is worth more than a DR 60 site with no readers. Always check organic traffic and relevance alongside the score.

How to increase domain authority

• Earn links from more unique, relevant, trusted domains
• Remove or disavow spam links that drag quality down
• Build linkable assets: research, tools, guides
• Get coverage through digital PR
• Be patient: scores are logarithmic; moving from 40 to 50 is much harder than 10 to 20

Domain decisions that matter for SEO

• Domain name: brandable beats keyword-stuffed; keywords in the domain barely matter now
• .sa vs .com: .sa signals Saudi relevance; .com with Saudi content and signals works equally well
• www vs non-www: no ranking difference; pick one and redirect the other
• Subdomain vs subfolder: subfolders share authority more reliably; use them for blogs and languages
• Aged and expired domains: buying them for their links is risky; Google often resets or penalises
• Hosting: speed and reliability matter; location matters little with a CDN
• URL shorteners: fine for sharing; do not use them for internal links

Frequently asked questions

What is a good domain authority?

Relative to competitors. Many successful Saudi SMEs sit at DA/DR 20–40.

Does Google use domain authority?

No. It uses its own link-based signals.

How do I check DA or DR?

Moz Link Explorer, Ahrefs Site Explorer (free Webmaster Tools), or Semrush.

Does changing domain hurt SEO?

It can if done without a full redirect plan; done properly, impact is temporary.

Related services and guides

• What are backlinks?
• Backlink checker tools
• Link building services