Domain Authority Checker: Open Data Rank, No Login

Check domain authority and popularity for up to 10,000 domains in one run. For each domain you get its Majestic Million rank, referring subnets and referring IPs, its Chrome UX Report rank bucket (top 1,000 up to top 1,000,000), and, if you turn it on, its domain age, registrar and expiry date from RDAP. Every row also has a simple popularityScore from 0 to 100 with the formula written out below.

All data comes from sources published under open licences or from the registries themselves. No login, no API key, and no scraping of paid SEO tools.

What does this domain authority checker do?

• Looks up each domain in the latest Majestic Million (the million root domains with the most referring subnets) and returns its rank, TLD rank, referring subnets and referring IPs.
• Looks up each domain in the latest monthly Chrome UX Report global top sites list and returns the best bucket across all its origins (www, m. and other subdomains).
• Optionally asks each domain's registry RDAP server for the creation date, expiry date and registrar. Contact fields (registrant, admin, tech, abuse) are dropped and never stored.
• Returns one row per domain with the fields below and a sources list that credits every source used for that row.

How to check domain authority in bulk

1. Paste your domains into Domains, one per line. URLs work too: https://www.example.co.uk/page becomes example.co.uk.
2. Pick the Signals you want: majestic, crux, rdap. The first two are on by default; turn on rdap for domain age and registrar.
3. Click Start. A few domains finish in seconds. A list of 10,000 domains without RDAP takes one to two minutes.
4. Download the results as JSON, CSV or Excel, or read them through the Apify API.

How much does it cost?

You pay per domain checked: $3.00 per 1,000 domains ($0.003 each) on Apify's Starter plan, $2.75 per 1,000 on Scale, $2.50 per 1,000 on Business and $7.50 per 1,000 on the Free plan. Entries that are not valid domains are returned as free rows marked invalid_input. If no requested source answered for a domain, the row is marked failed and is not charged.

Worked example: 5,000 domains with all three signals cost 5,000 x $0.003 = $15.00 on the Starter plan ($12.50 on Business). Set a maximum charge for the run and the Actor stops cleanly when it is reached.

Input example

{
    "domains": ["apify.com", "wikipedia.org", "github.com"],
    "signals": ["majestic", "crux", "rdap"]
}

Output example

{
    "domain": "example.com",
    "input": "https://www.example.com/",
    "popularityScore": 66,
    "majesticRank": 108,
    "majesticTldRank": 74,
    "majesticRefSubnets": 61374,
    "majesticRefIPs": 164838,
    "cruxRankBucket": 50000,
    "cruxOrigin": "https://example.com",
    "domainCreated": "1995-08-14T04:00:00.000Z",
    "domainAgeYears": 31.1,
    "registrar": "RESERVED-Internet Assigned Numbers Authority",
    "expires": "2027-08-13T04:00:00.000Z",
    "rdapStatus": "ok",
    "sources": [
        "Majestic Million by Majestic-12 Ltd, https://majestic.com/reports/majestic-million, licensed under CC BY 3.0 https://creativecommons.org/licenses/by/3.0/",
        "Chrome UX Report top sites 202608 by Google, https://developer.chrome.com/docs/crux, licensed under CC BY 4.0 https://creativecommons.org/licenses/by/4.0/",
        "RDAP registry data, rdap.verisign.com"
    ],
    "status": "ok",
    "error": null,
    "checkedAt": "2026-09-26T17:00:00.000Z"
}

All values above were read on 26 Sep 2026: Majestic Million list of that day, Chrome UX Report list for August 2026, and the .com registry RDAP record.

Field	Meaning
domain	Registrable domain that was checked
majesticRank	Position in the Majestic Million, 1 is highest; null if not listed
majesticRefSubnets	Distinct class C subnets linking to the domain
majesticRefIPs	Distinct IP addresses linking to the domain
cruxRankBucket	Chrome UX Report bucket: 1000, 5000, 10000, 50000, 100000, 500000 or 1000000
domainCreated, domainAgeYears, registrar, expires	From the registry's RDAP server
popularityScore	0 to 100, formula below
sources	Credit line with author, source link and licence link for each source that returned data
checkedAt	When the row was built

How the popularityScore is calculated

• Majestic part = (7 - log10(majesticRank)) / 7. Rank 1 gives 1.00, rank 1,000 gives 0.57, rank 1,000,000 gives 0.14.
• Chrome UX Report part = (7 - log10(cruxRankBucket)) / 4. Top 1,000 gives 1.00, top 10,000 gives 0.75, top 100,000 gives 0.50, top 1,000,000 gives 0.25.
• A domain that is not in a list gets 0 for that part.
• With both signals: score = round(100 x (0.6 x Majestic part + 0.4 x Chrome UX Report part)). With one signal: score = round(100 x that part).

The score is a popularity and link-reach signal built from open data. It is not Moz Domain Authority, Ahrefs Domain Rating or a Semrush Authority Score, and it will not match them.

Data sources and licences

• Majestic Million by Majestic-12 Ltd, licensed under the Creative Commons Attribution 3.0 Unported licence. Rows are limited to the domains you asked for and values are passed through unchanged. The popularityScore is our own calculation, not a Majestic metric.
• Chrome UX Report by Google, licensed under the Creative Commons Attribution 4.0 International licence. Origins are grouped by domain and the best bucket is kept.
• RDAP: registration data from each domain's registry RDAP server. Contact fields are dropped.

Each row's sources field carries the full source and licence links.

FAQ

Is this legal to use? The Majestic Million and the Chrome UX Report are published under Creative Commons Attribution licences that allow commercial reuse with credit. Each row carries that credit in sources. RDAP is the official registration data service for generic top-level domains. No personal data is collected. RDAP contact fields are dropped before anything is saved.

Why is my domain missing from a list? Both lists cover about one million sites. Smaller sites are often not in them, so majesticRank or cruxRankBucket is null and the score is low. That is an answer, not an error.

How fresh is the data? The Majestic Million is regenerated daily. The Chrome UX Report list is monthly; the month is in sources. RDAP is read live.

Why is RDAP slow? The Actor asks each registry at most 2 times per second by default, to stay polite. 10,000 .com domains take about 85 minutes with RDAP on, and one to two minutes without it.

Which TLDs does RDAP cover? Every TLD that has an RDAP server registered with IANA. Others get rdapStatus: rdap_unsupported_tld.

Related Actors. Pair this with a website technology detector or a bulk WHOIS or RDAP Actor from the Apify Store for a fuller picture of a domain list.

This Actor is not affiliated with, endorsed or sponsored by Majestic-12 Ltd, Google, Semrush, Ahrefs or Moz. Their names are used only to describe the data sources and the metrics people compare against.