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DADomain Authority
PAPage Authority
SSSpam Score
BLBacklinks

Understanding DA, PA, and SS

A Domain Authority Checker brings several SEO estimates together so you can assess a website with more context. This DA checker shows domain authority, page authority, spam score, and total backlinks when the data provider supplies them.

What is DA?

DA stands for Domain Authority. It is a third-party score, usually from 0 to 100, that estimates the relative strength of an entire domain. A higher score can suggest a stronger backlink profile, but DA is not a Google ranking factor.

A Domain Authority Checker helps you compare domains at a glance. Use a DA checker to spot broad differences, then review the sites themselves before making an SEO decision.

What is PA?

PA stands for Page Authority. It estimates the relative strength of an individual page on a 0 to 100 scale. A domain can have a strong DA while one of its pages has a lower PA, because the two scores describe different levels of a site.

PA is useful when comparing specific pages, such as pages competing for the same topic or pages you are considering for a backlink.

What is SS?

SS stands for Spam Score. It is an estimate of signals that may be associated with low-quality or spammy websites. A higher percentage suggests that a closer review is sensible; it does not prove that a site is unsafe or penalized.

Read SS alongside the site's content, links, and relevance instead of treating it as a final verdict.

Why people use these checkers

The DA checker is useful for comparing potential link partners, reviewing competitors, and watching how a site's authority estimates change over time. A Domain Authority Checker can also help you decide which sites deserve a closer manual review.

  • Compare domains: look at DA and PA together to understand domain-level and page-level differences.
  • Review link opportunities: consider Spam Score, backlinks, topical relevance, and site quality before outreach.
  • Track trends: record results over time, remembering that data providers may update their scores.

Use any Domain Authority Checker as a research aid. These scores are estimates, so they work best alongside a review of the actual website.

FAQs about the tool

How do I use this DA checker?

Enter a domain such as example.com and select Check Authority. The DA checker displays the metrics returned by the available data provider.

Do DA, PA, or SS directly affect Google rankings?

No. They are third-party estimates for research and comparison, not scores used directly by Google to rank pages.

Why can a Domain Authority Checker return different scores?

This Domain Authority Checker can use a backup provider if another provider fails or reaches its limit. Providers may use different data and update schedules, so compare scores with that difference in mind.

Why is a metric shown as a dash?

Some providers do not return every metric. A dash means that the selected provider did not supply that value for the check.

Can this DA checker help with backlink research?

Yes. It can help you shortlist sites, but review the linking page's relevance, content, and traffic before deciding whether a backlink is worthwhile.