Domain Authority Checker

Check the domain authority (DA), page authority (PA) and spam score of up to 100,000 domains or URLs in one run. Paste a list, get a clean table back in seconds, and optionally add each domain's backlink and referring-domain counts. No Moz, Ahrefs or Semrush subscription needed. Built by Precision Labs.

What it does

• Domain authority for every domain: a 0–100 score of how strong the site is, from the links pointing at it.
• Page authority for every URL you enter: the same score for that one page.
• Spam score for every domain: how spammy its backlink profile looks, 0–100.
• Backlinks and referring domains for every domain, if you turn on Include backlink and referring-domain counts.

Domains are checked in batches of 1,000, so even large lists finish in a minute or two.

Who it's for

• Link builders and SEOs vetting outreach prospects, guest-post sites or link vendors.
• Domain investors screening expired or for-sale domains before buying.
• Agencies comparing a client with its competitors.
• AI agents and automations (n8n, Make, Zapier, MCP clients) that need domain authority through an API.

How to use it

1. Paste your Domains or URLs, one per line: example.com for a site, or a full URL for a page.
2. Click Start. Download the results as JSON, CSV or Excel, or get them through the API.

Pricing

You pay per domain, with no subscription, and prices drop on Apify's paid plans.

Event	Free	Starter	Scale	Business	When
domain-result	$0.0005	$0.00045	$0.0004	$0.00025	Each domain or URL checked.
data-request	$0.075	$0.075	$0.075	$0.075	One bulk lookup. Each batch of up to 1,000 domains takes two, or four with backlink and referring-domain counts.

Example	Free	Starter	Scale	Business
1 to 10 domains	$0.15	$0.15	$0.15	$0.15
1,000 domains	$0.65	$0.60	$0.55	$0.40
1,000 domains with link counts	$0.80	$0.75	$0.70	$0.55
10,000 domains	$6.50	$6.00	$5.50	$4.00

Never charged: entries that aren't domains or URLs, entries the data provider rejects (such as an unknown domain ending), and domains DataForSEO has no record of. One rejected entry doesn't affect the rest of the list. A domain with no links at all is still a result (domain authority 0) and is charged like any other. No request fee when you repeat a lookup within the same week: the results come from your own Apify storage. Set Maximum cost per run and the Actor checks only as many domains as that budget covers.

Input

Field	What it does
Domains or URLs	Up to 100,000, one per line. URLs also get page authority.
Include backlink and referring-domain counts	Adds each domain's backlinks and referring domains. Off by default; adds two requests per 1,000.

Example input through the API:

{
    "targets": ["backlinko.com", "https://backlinko.com/seo-checklist", "budgetbytes.com"],
    "linkCounts": true
}

Output

One row per domain or URL (real data, October 2026):

{
    "type": "domain",
    "input": "https://backlinko.com/seo-checklist",
    "domain": "backlinko.com",
    "url": "https://backlinko.com/seo-checklist",
    "domainAuthority": 70,
    "pageAuthority": 34,
    "spamScore": 2,
    "backlinks": 337051,
    "referringDomains": 61537,
    "referringMainDomains": 57611,
    "fetchedAt": "2026-10-26T12:00:00.000Z"
}

Entries that were rejected or have no data get a free row with "type": "error" and the reason.

FAQ

Is this Moz Domain Authority?

No. Domain Authority is Moz's own metric, and Domain Rating is Ahrefs'. This Actor returns DataForSEO's domain rank, a 0–100 score that is also computed from the links pointing at a site. Scores land in a similar range but don't match Moz's or Ahrefs' numbers exactly. Use them to compare domains with each other, all scored the same way.

Where does the data come from?

From DataForSEO's backlink index, through the DataForSEO API. This Actor isn't affiliated with, or endorsed by, DataForSEO, Moz, Ahrefs, or any site named in the examples. Those examples are real output for public websites, used only to show what the data looks like.

Why does a domain have authority 0?

DataForSEO has found no links pointing at it. That's common for new, parked and expired domains.

Why is the page authority 0 for a URL?

DataForSEO scores the exact URL you enter, so https://www.example.com/page and https://example.com/page can differ. Use the form the site actually serves.

Do I need a Moz, Ahrefs or DataForSEO account?

No. You only need an Apify account.

Why is there a new storage in my account?

The Actor keeps this week's lookups in a key-value store called precisionlabs-domain-authority-checker-cache in your own account, so repeating a lookup skips the request fee. You can delete it at any time.

Something looks wrong?

Open an issue on the Issues tab with the domains you checked, and we'll look into it.

More from Precision Labs

• Backlink Checker, Domain Rank & Link Gap: the backlinks and referring domains behind these scores, and sites that link to your competitors but not to you.
• Competitor Keywords, Ranked Keywords & Keyword Gap: the Google keywords any domain ranks for, its organic competitors, and your keyword gap.
• Keyword Search Volume & CPC: Google Keyword Planner search volume, CPC and trends for up to 100,000 keywords per run.