// seo.co

Domain Authority Checker

Get Started SEO AUDIT SERVICES

200+

Ranking factors audited per page

15 yrs

Of search-algorithm operational history

5K+

Keywords moved into top-10 positions

F500

Clients alongside startups & agencies

// engineering methodology

How we engineer rankings.

A five-phase loop, repeated continuously. No black boxes — every step traceable to a measurable signal.

seo.co — process.ts

$ seo.audit()

Diagnose

200-point technical, content, and backlink audit. Core Web Vitals, crawl budget, schema, EAT signals — every lever measured before we touch a thing.

$ seo.strategy()

Cluster

Keyword universes mapped to topical authority pillars. Intent matched to content. Internal-link graph designed before a single page ships.

$ seo.execute()

Build

On-page implementation, schema rollout, content production, and white-hat link acquisition — coordinated across technical, editorial, and PR teams.

$ seo.measure()

Track

Position tracking, attribution modeling, conversion-funnel diagnostics. Weekly reports tied to revenue, not vanity metrics.

$ seo.optimize()

Iterate

Algorithm-update response within 48 hours. Competitive deltas surfaced in real time. Continuous remediation on the pages losing ground.

If you want to rank higher in search engines, you need a higher domain authority.

But what if you don't know what your domain authority is?

And how can you be confident that your efforts are increasing your website authority?

A domain authority (DA) checker is a tool designed to help you calculate the domain authority of any domain, as well as other metrics, so you can better understand your current standing and the effects of your strategic efforts.

And we just happen to have one for you to use.

robots.txt// crawl directives

 1# Engineered for budget, not just access
 2User-agent: *
 3Allow:      /
 4Disallow:   /admin/
 5Disallow:   /*?session=
 6 
 7User-agent: GPTBot
 8Allow:      /
 9 
10Sitemap: /sitemap_index.xml

What Is Domain Authority (DA)?

First, what exactly is domain authority (DA)?

Domain authority is a metric devised by Moz to estimate the relative authority, or trustworthiness, of a given domain. The scale of domain authority ranges from 1 to 100, with 100 being the highest; generally, the higher your domain authority score is, the more likely your pages are to rank highly in search engine results pages (SERPs), though there are other factors that come into play as well.

A Moz domain authority of 40-50 is considered average, while a domain authority of 50-60 is considered good and anything above 60 is considered excellent.

There are several factors that enter the domain authority equation, but the most important factor is arguably links. Google and other search engines use links as a vote of confidence; earning a link from a specific domain means you have the implicit approval of that domain, a marker of trust and deference to authority.

The quantity and quality of links pointing to your domain are both important considerations. Having more links is, in many cases, a good thing, since it means there are more instances of other domains citing yours as a resource. However, the value of a link depends on the domain authority of the referring domain; earning a link from a high authority website with a DA of 80 is much better than earning a link from a website with a domain authority of 20. Additionally, earning repeated links from the same domain isn't nearly as valuable as earning links from different domains.

Website Audits Showcase Technical Deficiencies & Behavior Analytics to Improve On-page & Off-page Website Health

Our SEO services include a full audit report will provide you with a detailed plan of attack for fixing specific on and off-site errors and deficits as well as provide suggestions for internal linking and off-site link procurement for immediate keyword growth.

lighthouse-report.json// page audit

Performance

100

Accessibility

Best Practices

100

SEO

Why Do You Need a<br>Bulk Domain Authority Checker?

Why should you use a domain authority (DA) checker tool?

schema-validator// structured-data status

Organization

valid

ProfessionalService

valid

FAQPage

valid

BreadcrumbList

valid

Article

valid

AggregateRating

valid

// ai-search visibility · GEO

Ranking is no longer just Google.

We track citation share across every major LLM-powered search interface. Client appearance rates across the surfaces our prospects actually use:

GPT

ChatGPT Search

82%citation share

PPL

Perplexity Pages

89%citation share

AIO

Google AI Overview

71%citation share

GEM

Gemini Search

64%citation share

CLD

Claude Citations

58%citation share

COP

Bing Copilot

73%citation share

// structured data

Schema-first because Google reads JSON, not paragraphs.

Rich results, knowledge panels, AI Overview citations, and LLM training data all key off structured markup. We deploy validated JSON-LD across every page, monitored for drift.

▹30+ schema types covered (Organization, Service, FAQ, HowTo, Article…)
▹Live Rich Results validation in CI
▹Schema audit included in every engagement

schema.json

 1{
 2  "@context": "https://schema.org",
 3  "@type": "ProfessionalService",
 4  "name": "SEO.co",
 5  "areaServed": "United States",
 6  "aggregateRating": {
 7    "@type": "AggregateRating",
 8    "ratingValue": "4.9",
 9    "reviewCount": "312"
10  }
11}

Baseline Metrics

Some people use the domain authority checker as a way to get a baseline metric. In other words, what is your domain authority at the start of your latest SEO campaign? Once you have this metric, you can much more reliably see the fruits of your labor.

gsc-coverage// index coverage · 30d

Indexed

1,842

Discovered

117

Excluded

Error

Strategy Analytics

The domain authority checker is also valuable for analyzing the effects of your strategy and tracking your progress. If your domain authority grows higher every month, you can feel confident that your efforts are working.

keyword-clusters.csv// cluster intent

technical seo audit4.4K/mo

KD 38

core web vitals optimization1.9K/mo

KD 24

schema markup implementation2.7K/mo

KD 31

internal linking strategy3.1K/mo

KD 42

site speed optimization8.8K/mo

KD 55

Issue Identification

Periodically checking your domain authority can also bring your attention to potential issues so you can troubleshoot them. For example, if you notice that your domain authority declines, you may have the opportunity to track down problematic domains linking to your website that are responsible for the problem.

robots.txt// crawl directives

 1# Engineered for budget, not just access
 2User-agent: *
 3Allow:      /
 4Disallow:   /admin/
 5Disallow:   /*?session=
 6 
 7User-agent: GPTBot
 8Allow:      /
 9 
10Sitemap: /sitemap_index.xml

// core web vitals · field data

Page speed is a ranking signal. We engineer it like one.

Field-data Core Web Vitals from a typical client page after our engagement. Real users, real conditions, measured against Google's thresholds.

Good · 90+

Needs work · 50–89

Largest Contentful Paint

LCP

1.8s

score 94

Cumulative Layout Shift

CLS

0.03

score 98

Interaction to Next Paint

INP

120ms

score 91

// the difference

What “technical” actually means.

Capability

SEO.co

Typical SEO agency

Technical audit depth

200+ checks · weekly

Single annual audit

Schema markup

30+ types, CI-validated

Hand-rolled, often broken

Core Web Vitals

Engineered to <2.5s LCP

Recommendation, not implementation

Reporting cadence

Live dashboard + weekly

Monthly PDF

Algorithm response

48-hour playbook

Wait-and-see

Content + links + tech

Single coordinated team

3 separate vendors

// algorithm response log

Every algorithm update has a playbook.

We don't wait-and-see. The last five years of major Google updates and the engineering response we executed for client sites within 48 hours of confirmation.

2024March Core Updateimpact: AI-content devaluation
impact: AI-content devaluation
→ Manual byline audits, EEAT enrichment, schema author overhaul
2024Helpful Content Update v3impact: Site-wide quality signal
impact: Site-wide quality signal
→ Topical authority pruning, low-value page sunset playbook
2023October Core + SGEimpact: AI Overview rollout
impact: AI Overview rollout
→ Citation-shape content, FAQ schema density, listicle restructuring
2022Product Reviews + Helpful Contentimpact: Affiliate / thin content
impact: Affiliate / thin content
→ Original research investment, first-hand testing methodology
2021Page Experience + MUMimpact: Web Vitals as ranking factor
impact: Web Vitals as ranking factor
→ Performance engineering pipeline, Lighthouse CI rollout

// operating stack

The platforms we run.

Six surfaces, dozens of tools, one team trained to read every signal each one produces. We don't pick favorites — we instrument everything.

Crawl & Audit

Screaming Frog
Sitebulb
Botify
JetOctopus

Backlinks

Ahrefs
Semrush
Majestic
Moz Pro

Google Search Console
Bing Webmaster
Yandex Webmaster

Analytics

GA4
BigQuery
Looker Studio
Mixpanel

Performance

PageSpeed Insights
WebPageTest
Lighthouse CI
Calibre

AI Search

Perplexity Pages
ChatGPT Search
Profound
AthenaHQ

// frequently asked

Common questions

01On-page Analysis.

By analyzing individual pages and keywords using Google Analytics, Google Search Console (reviewing accelerated mobile pages), Core Web Vitals (reviewing page speed) and other keyword research tools, we create a detailed roadmap that is industry agnostic and fully-repeatable for ranking in search engines.

02Complete Content Audit.

Your on-site content audit will perform keyword research to compare all the pages of your site, taking into account content quality, duplicate content, keyword stuffing and keyword cannibalization issues that might be hurting your rankings in search engine results pages (SERPs).

03Holistic Backlink Audit.

Understand impact of site-wide and individual web pages with a comprehensive look at backlink diversity, link velocity, anchor text variability, TLD diversity, internal links and internal link structure.

04Determine Link-Worthy Assets.

We find the best content assets on your website, worthy of inbound mentions and backlinks. If you don't have any or your content is lacking, our editorial team can help to beef-up your content assets.

05Find Publishers that Match Your Strategy.

We source publishers with relevance and authority and pitch them content ideas that include backlinks and references back to your website.

06Write The Content.

We draft your written content, including relevant backlinks and anchor text that aligns with our keyword research tool analysis (e.g. title tags, meta tags, keyword density, etc.). We then get publisher approval to get the content published.

07Backlink Reporting.

You receive regular backlink reports included in your standard monthly SEO work reports.

08Is your domain authority checker free?

Yes, you can use our domain authority checker for free. We want everyone to have open access to this data.

09What DA should I aim for?

The higher your domain authority is, the better. Once you reach a DA of 40, your site can be considered average. Once you have a DA of 60, your site can be considered very good. The higher you go, the more value you'll see. You should always aim for high domain authority.

10Why are there so many different metrics?

The modern world thrives on data, so we aim to provide as many relevant metrics as possible to the search optimizers seeking it. Not every data point is going to be relevant for every researcher, but it's better to have more data than less data. Other third-party tools like Ahrefs measure similarly with slightly different logarithmic calculations and nomenclature (e.g. Domain Rating or DR).

11My DA is low. What should I do?

If you have a surprisingly low DA, it could be because you have a lack of links, a lack of links from high-authority sources, or a technical problem with your website. The best solution is to focus on improving your SEO strategy.

12The tool isn’t working for me. What can I do?

Try refreshing this page. If that doesn’t work, let us know.

13Determine Link-Worthy Assets.

14Find Publishers that Match Your Strategy.

We source publishers with relevance and authority and pitch them content ideas that include backlinks and references back to your website.

15Write The Content.

16Backlink Reporting.

You receive regular backlink reports included in your standard monthly SEO work reports.

// ready to engage

Ready to outrank the competition?

Get a tailored proposal from the team that's engineered search results for Fortune 500 companies, agencies, and startups since 2010.

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