Bulk Domain Authority Checker

Bulk domain authority, in short

Paste up to 100 domains in the bulk domain authority checker above and click Check domains. Read the DR column, or copy CSV. The score is Domain Rating by Ahrefs. It is not Moz Domain Authority.

Each hostname is sent to this site. You get a 0 to 100 backlink-strength score for the list you already have.

Use it when a spreadsheet of sites needs a first pass. The table does not count backlinks, traffic, or keywords. If the number you were asked for is Moz DA, this page will not produce it.

How to check domain authority for a list of sites

Three steps. The lookup starts only when you click the button.

1. Paste one domain per line

   Put hostnames or page URLs in the box above, or separate them with commas. The checker keeps the first copy of each hostname, drops a leading www, and ignores the path. Use sample fills four public sites and does not run the lookup. The cap is 100 domains. Pastes over 30,000 characters are refused.

2. Click Check domains

   The list is sent to Small Tools Buddy. The server asks Ahrefs for Domain Rating. A long list can take a few seconds. You can run 4 checks in 10 minutes from the same network. If many lookups are already running, the page can ask you to wait sooner.

3. Read DR, then sort or copy

   DR is Ahrefs Domain Rating from 0 to 100. Sort by rating puts the highest scores first. Copy CSV writes domain, domain_rating, and note. A row with a note was not scored.

What the checker does with each line

One hostname or URL per line is the safe format. Commas and semicolons also split the box, which is why a normal sentence turns into skipped words. Put a real domain on each line.

A leading www, a path, a port, and a trailing dot are removed. A subdomain stays. Words, IP addresses, and names without a normal ending are not sent to Ahrefs. The page lists at most 20 of those skipped lines.

Domain Rating, not Moz Domain Authority

The DR column is Ahrefs Domain Rating, version dr4. Ahrefs describes it as the strength of a site’s backlink profile on a logarithmic scale from 0 to 100. This page shows that value to one decimal, or as a whole number when it is already whole. A 0 is a score Ahrefs returned.

Domain Authority is Moz’s score. Moz describes it as a 1 to 100 prediction of how a site compares with others in search results, built from Moz’s link index. It is not a Google ranking factor, and it is not the number in this table. People still search “domain authority” when they want a quick strength check. That is why the title uses those words and the column says DR.

Ahrefs says Domain Rating is affected by how many domains link to the site, the DR of those domains, and how many other sites they link out to. Nofollow links do not pass DR. Ahrefs also says the score does not include traffic, domain age, or a spam measure. The exact formula is theirs, and this page does not reprint it.

Logarithmic means a one-point gap high on the scale is a bigger jump than a one-point gap near the bottom. Ahrefs’ own illustration is DR 75 to 76 versus DR 20 to 21. There is no universal “good” DR. Ahrefs says to compare a site with similar sites, not with a fixed cutoff.

Ahrefs calls Domain Rating a site-wide score, and a different metric, URL Rating, for a single URL. This checker deletes the path before the request, so a row is not a rating of /pricing or of one blog post. Ahrefs has also written that a study of its index found DR correlated with how many keywords a site ranks for, and that Google representatives deny “domain authority” as a ranking factor. Read that as their research note. A higher DR on this table does not place a page in Google.

What leaves your browser

Clicking Check domains posts the text to Small Tools Buddy so the server can ask Ahrefs. There is no account and no saved list of your checks. Closing the tab does not undo a request that already left.

• 4 checks in 10 minutes from the same network
• A busy period can ask you to wait even sooner
• A domain that does not answer in 8 seconds is marked timed out
• A name Ahrefs rejects is labeled “Ahrefs does not recognize this domain.”
• A slow batch can stop later rows with “Lookup stopped.”

Leave hostnames you do not want requested out of the box. A browser extension on your computer can still see what you type. Use of the scores follows the Domain Rating License. The credit line is Domain Rating by Ahrefs.

This page, Ahrefs, or Moz

Use this page when the list is already in your hands and you want DR in a table you can sort or copy. The cap is 100 domains. You do not get referring domains, traffic, or the pages that link.

Use the Ahrefs website authority checker when you want Domain Rating inside Ahrefs’ own site. This page does not replace a backlink report, and it is not more accurate than the number Ahrefs shows for the same host.

Use Moz when someone asked for Domain Authority by name. Moz says larger DA pulls are a Moz API job. This page never calls Moz, so do not paste a DR into a cell labeled DA. The two scales can move differently for the same site.

How to compare the scores

Sort by rating when you want the strongest backlink profiles at the top. Input order is better when the list matches a sheet and you need to paste the CSV back beside the original rows. The CSV header is domain, domain_rating, note. The note is empty when the lookup succeeded.

Compare sites that could actually compete for the same queries. Ahrefs points out that moving from DR 75 to DR 76 is a much bigger jump than moving from DR 20 to DR 21, so a ten-point gap is not one size. DR is a weak way to accept or reject a link on its own. Ahrefs tells readers to look at the linking page, the topic, and whether the site gets traffic. Those facts are not in this table.

A second copy of a hostname is checked once. blog.example.com is sent as blog.example.com, not folded into example.com. Because Ahrefs describes DR as site-wide, do not treat that row as a separate score for the subdomain’s homepage, and do not treat it as URL Rating for a path you deleted.

What to do next

Check the list, sort if you want the highest DR first, and copy CSV into the sheet. Open Ahrefs when you need the links behind a DR. Open Moz when the column you were asked to fill in is Domain Authority. If the only goal was a higher number, this page cannot raise it. If the question is how long the registration has existed, use the domain age checker. It reads the WHOIS creation date. It does not return Domain Rating.

Bulk domain authority questions