DA Checker

What Is a DA Checker?

A DA checker is a tool that organises and analyses a list of domains by their Domain Authority score, providing a quick quality overview of a prospect list, competitor set, or existing link profile. Rather than reviewing domains one by one, the checker sorts the full list by DA and groups each domain into a quality tier, making it immediately clear which prospects are worth prioritising and which fall below the minimum quality threshold for a given campaign.

Domain Authority (DA) is a metric developed by Moz that predicts a website's ability to rank in search engine results on a scale of 1 to 100. The score is calculated using a machine learning model incorporating the number and quality of referring domains, the strength of the link profile, and comparison against all other sites in the Moz index. Similar metrics include Ahrefs' Domain Rating (DR) and Semrush's Authority Score. This tool works with any numerical authority score regardless of which tool generated it.

A DA checker is most valuable as a prospecting filter. When an outreach list or link opportunity list contains dozens or hundreds of domains, manually reviewing each one for authority is time-consuming. Entering the list with pre-fetched DA scores allows the checker to instantly separate the high-value opportunities from the low-value ones, reducing the time spent on manual triage and ensuring that outreach effort is directed toward prospects that meet the quality threshold for the campaign.

How to Use the DA Checker

1. Fetch DA scores for your target domains using Moz Link Explorer, Ahrefs' DR column, or a bulk DA checking tool. Export the results as a CSV or spreadsheet.
2. Enter each domain and its DA score into the checker's table rows. Edit the pre-loaded example rows or use the Add domain button to build your list from scratch.
3. Click the DA column header to toggle between descending (highest first) and ascending (lowest first) sort order.
4. Review the tier summary bars to see the quality distribution across your list. The average DA card shows the overall authority level of the domain set.
5. Use the tier labels to set a minimum threshold for your campaign. For most mid-competition niches, a minimum of DA 35-40 is a reasonable outreach filter.
6. Export to CSV and filter the spreadsheet to your minimum DA before beginning outreach.

Authority Tier Comparison: What Each Level Means for Link Building

Each DA tier represents a different level of link equity and editorial credibility. Understanding what each tier means in practice helps set appropriate quality thresholds for different campaign types:

These thresholds are guidelines rather than hard rules. A DA 28 site in your exact niche with a highly engaged audience may be more valuable as a link source than a DA 55 generalist directory. Always factor in topical relevance and editorial quality alongside the numerical DA score when making final prospecting decisions.

Who Uses the DA Checker

Link outreach specialists

Outreach specialists use the DA checker as a prospecting filter at the start of every campaign. After building an initial prospect list from Google searches, competitor backlink analysis, or HARO opportunities, they pull DA scores in bulk from Moz or Ahrefs and paste the full list into the checker. The tier distribution immediately shows whether the prospect list is skewed toward low-value opportunities, allowing them to supplement or replace the low-DA portion before any outreach is sent. This ensures that the outreach budget is spent on prospects that meet the campaign quality standard rather than on building a high volume of low-authority links.

Digital PR managers vetting media lists

Digital PR managers use the checker when qualifying media lists for a campaign. A media list compiled from press databases or journalist contacts may include publications ranging from national newspapers at DA 90+ to niche blogs at DA 15. Running the full list through the DA checker gives an instant quality overview that informs which publications to prioritise for pitching, which to approach as secondary targets, and which to remove from the active outreach list to focus effort on higher-authority placements.

SEO agency account managers reviewing link deliverables

Agency account managers use the checker to review link building deliverables from their team or from an outsourced link building supplier. Entering the domains where links were placed in a given month shows whether the deliverables meet the campaign quality threshold. If the distribution shows a high proportion of Low or Moderate tier links, the account manager has objective data to support a quality improvement conversation with the link building team without needing to individually review every placement.

In-house SEO teams building competitor benchmarks

In-house SEO teams use the checker to benchmark their site's DA against a defined set of competitors. Entering the company's own domain alongside 5-10 competitor domains shows the authority gap visually and numerically. The average DA of the competitor set becomes a target for the link building programme, and the tier breakdown shows how many competitors sit in each quality band, helping prioritise which competitor link profiles to analyse for gap opportunities.

When to Use the DA Checker

Use the DA checker when building or qualifying a link prospect list, when reviewing a competitor's referring domain profile for gap analysis, when evaluating the quality of link building deliverables from an agency or contractor, or when creating a DA benchmark for a competitor comparison report. The checker is particularly useful when the prospect list is large enough that individual manual review would be time-consuming, typically 10 or more domains.

The checker is also useful when setting quality standards for a new link building contract or agency brief. By entering a sample of high-quality links from comparable campaigns alongside the minimum acceptable quality threshold, you produce a concrete DA benchmark that can be included in the agency brief as a measurable quality standard rather than a subjective description.

Integrating DA Checking into Your Link Building Workflow

A structured DA checking workflow prevents quality drift over the course of a long link building campaign. At the prospecting stage, define a minimum DA threshold appropriate to your niche before the outreach list is built rather than after. This front-loads the quality filter so that the team never invests outreach effort in a prospect that will be rejected at the DA review stage. For most mid-competition niches, a minimum of DA 35 for guest posts and DA 50 for editorial placements is a reasonable starting point; adjust based on the average DA of the domains currently ranking on page 1 for your target terms.

At the placement review stage, enter all secured links from the current month into the DA checker alongside the target distribution for the campaign. If the placement distribution shows a higher proportion of Low and Moderate tier links than planned, the shortfall can be addressed in the following month's outreach by shifting more effort toward high-priority Authority and Strong tier prospects. This monthly distribution review keeps the overall link portfolio trending toward the quality profile needed to support the DA growth target. The Google Search Central guidelines on link best practices reinforce why link quality matters more than volume in a sustainable SEO programme.

For agencies managing multiple clients, the DA checker is useful as a cross-client quality benchmark. Running the full link placement list for each client through the checker each month produces a consistent quality metric across accounts that can be tracked in a shared dashboard. This allows the head of link building to identify which accounts are hitting quality targets, which are underperforming, and whether the underperformance reflects prospect availability, outreach conversion rates, or content quality limitations on the client's site. A consistent monthly DA distribution report for each client is also a professional deliverable that communicates programme quality in a way that raw placement counts do not.

Common DA Checking Mistakes to Avoid

Setting a single DA threshold for all campaign types ignores the relationship between campaign competitiveness and the authority level needed to make an impact. A local business targeting low-competition local keywords may see meaningful ranking improvements from a portfolio of DA 25-40 links, while a national e-commerce site competing for high-volume category terms may need an average referring DA of 50+ to move the needle. Set the threshold based on a competitive analysis of the domains currently ranking for the target keywords rather than on an absolute benchmark.

Using DA as the only prospecting filter misses important qualitative factors. A site with a DA of 60 but an outbound link count of 50,000 distributes its link equity very thinly, making each individual link much less valuable than a DA 60 site with 200 outbound links. Similarly, a site with a high DA that has no topical relevance to your niche contributes less to topical authority than a lower-DA site with strong subject matter alignment. Use DA as a minimum threshold, not as a complete quality signal.

Refreshing DA data infrequently leads to outdated prospecting decisions. DA scores change as Moz updates its index and as sites gain or lose links. A site that had DA 55 six months ago may have dropped to DA 38 due to link loss or a domain change. For active outreach campaigns, refreshing DA data monthly or at the start of each new prospecting batch ensures that the quality thresholds applied to the prospect list reflect current site authority rather than historical scores.

Building a DA-Based Link Prospect Scoring System

A DA-based prospect scoring system goes beyond a simple pass-fail threshold by assigning weighted scores to prospects based on multiple authority and relevance factors. The base score comes from the DA tier, with Authority sites scoring 4 points, Strong sites 3 points, Moderate sites above threshold 2 points, and below-threshold sites excluded. Additional points are added for topical relevance, outbound link count, and editorial contact availability. The resulting score per prospect determines outreach priority tier and allows the outreach team to sequence their effort toward the highest-value opportunities first rather than working through a list in an arbitrary order.

Tracking the response rate and placement rate by DA tier across multiple campaigns builds an empirical dataset about which authority levels produce the best outreach outcomes in a given niche. Some niches have highly responsive communities at DA 35-45 because the sites in that tier are run by engaged practitioners who value editorial relationships. Other niches have most of the editorial authority concentrated at DA 70+ with almost no responsive mid-tier sites. Knowing which tier produces the best outreach economics in a specific niche allows for smarter prospecting that allocates effort toward the tier where the effort-to-placement ratio is most favourable.

A final application of the DA checker that is often overlooked is for evaluating link building suppliers before engagement. Asking a prospective link building agency to share a sample of 20 links from previous campaigns and entering those into the DA checker immediately shows the quality distribution of their typical output. An agency whose sample shows 70% Low tier links and 10% Authority tier links is a different quality of supplier than one whose sample shows 30% Authority and 50% Strong. The DA checker converts a supplier evaluation from a subjective assessment into a data-driven comparison.