Understanding SEO Metrics: What Are DR, DA, and PA? Essential SEO Metrics for Choosing Expired Domains

/ blog / SEO, SEO Metrics, SEO指標

When selecting expired domains, it is crucial to evaluate various SEO metrics to
determine their potential impact. These metrics serve as benchmarks to assess
how strong a domain’s backlink profile is and how well it might perform in
search engine rankings. In this article, we will explain the eight essential SEO
metrics that should not be overlooked when choosing an expired domain.

Domain Rating (DR)

  • Overview: This metric reflects the overall strength of a
    domain’s backlink profile. A higher score indicates a more robust backlink
    profile.
  • Meaning: DR evaluates the quantity and quality of external
    links, helping to determine the SEO potential of a domain. Domains with a
    high DR are more likely to rank well on search engines and possess strong
    link power.
  • How to Use: When selecting an expired domain, a high DR
    suggests strong SEO potential, especially if you aim to enhance your site’s
    backlink profile.
  • Provided by:
    Ahrefs

Domain Authority (DA)

  • Overview: A metric from Moz that measures a domain’s
    overall authority.
  • Meaning: DA is determined by the quality and quantity of
    backlinks, influencing the domain’s SEO performance. Domains with high DA
    are more likely to rank higher in search engine results.
  • How to Use: High DA domains are especially valuable for
    competitive industries where strong SEO influence is required.
  • Provided by:
    Moz

Page Authority (PA)

  • Overview: A Moz metric that indicates the authority of a
    specific page within a domain.
  • Meaning: PA measures the SEO strength of an individual page
    and its potential to rank in search engine results.
  • How to Use: Useful for evaluating specific pages within an
    expired domain. If a page has a high PA, it may already hold significant SEO
    value.
  • Provided by:
    Moz

Spam Score (SS)

  • Overview: A Moz metric used to assess a domain’s spam risk.
  • Meaning: Based on factors indicating potential spammy
    behavior, a high spam score signals a higher risk of penalties. Moz updated
    its calculation method in 2023, and scores now range from 0 to 100.
  • How to Use: Generally, domains with high spam scores should
    be avoided. However, domains with a spam score between 50% and 70% might
    still be usable depending on other factors.
  • Provided by:
    Moz

Trust Flow (TF)

  • Overview: A Majestic metric that measures the
    trustworthiness of the sites linking to a domain.
  • Meaning: The more trustworthy sites linking to a domain,
    the higher its TF. Trusted backlinks are more likely to be highly regarded
    by search engines.
  • How to Use: When buying an expired domain, check its TF to
    ensure it has trustworthy backlinks.
  • Provided by:
    Majestic

Citation Flow (CF)

  • Overview: A Majestic metric that measures the volume of
    backlinks a domain has.
  • Meaning: CF increases with the number of backlinks, but you
    should also be wary of low-quality links.
  • How to Use: A high CF suggests a large number of backlinks,
    but it’s important to also check their quality to ensure they are
    beneficial.
  • Provided by:
    Majestic

Trust Ratio (TR)

  • Overview: This metric represents the ratio of Trust Flow
    (TF) to Citation Flow (CF), used to evaluate the overall quality of
    backlinks.
  • Meaning: TR reflects the balance of a domain’s link
    profile. A ratio of 0.5 or higher is considered good, and a TR close to 1
    indicates a high-quality backlink profile.
  • How to Use: A higher TR indicates that the domain’s
    backlink profile is balanced, with a good ratio of link quality to quantity,
    which is beneficial for SEO.
  • Provided by:
    Majestic

Referring Domains (RD)

  • Overview: The number of unique external websites that are
    linking to the domain.
  • Meaning: A higher number of Referring Domains suggests a
    stronger, more widespread backlink profile. However, the quality of these
    referring domains is also an important factor.
  • How to Use: When selecting expired domains, it’s essential
    to check both the quantity and quality of referring domains to evaluate the
    strength of the backlink profile.
  • Provided by:
    Ahrefs

Conclusion

These SEO metrics are crucial when choosing an expired domain. However,
selecting a domain based solely on high numbers is not enough. To identify a
domain with strong SEO potential, you must consider the balance of these metrics
and conduct a comprehensive evaluation. Relying too heavily on any single metric
can be misleading; instead, continually assess the domain’s performance in
real-world usage to make the best decision.

Scroll to Top