That sounds correct to me - if the number of Linking Root Domains associated with SearchEngineLand is 135,000, that's links pointing to SearchEngineLand's domain, not Moz's domain.

Hey there! Tawny from Moz's Help Team here!

The number of Linking Root Domains you see is links from other sites pointing back to your root domain (or the root domain you entered in the search bar in Open Site Explorer). So, in your example, that would be 135,000 sites linking back to moz.com somewhere on the site.

I hope that helps! If you have any more questions, feel free to drop us a line at help@moz.com and we'll answer them for ya!

Hey there, thanks for writing in!

The only way to check for Domain Authority, Page Authority or Spam Score in bulk would be our Mozscape API. You can read all about the API and how it works and what's required over in our Help Hub pages, here: https://moz.com/help/guides/moz-api/mozscape/overview

I hope this helps! Let us know if you have any other questions or if there's anything that needs clarifying! Just send us a note over at help@moz.com and we'll do our very best to answer all your questions!

Hey there! Tawny from Moz's Help Team here.

Unfortunately, I don't know that I'm actually equipped to answer your question. I can speak to how Moz's tools determine duplicate content, but I don't know how you'd go about implementing solutions for errors you're seeing with SEMrush. Sorry about that!

Hopefully one of our wonderful community members will have more insight than I do. Sorry I couldn't be more help!

If you do have questions about Moz's tools, feel free to give us a shout at help@moz.com and we'll see what we can do.

Hey there! Tawny from Moz's Help Team here!

Sean is totally right - the place to go would be Open Site Explorer, and you'd want to take a look at the Spam Analysis tab! That should help you focus your efforts for disavowing any links that need to be disavowed.

The only difference there is the * wildchar. The string with that character will limit the crawler from accessing any URL with that string of characters in it.

Hi there! Tawny from the Customer Support team here!

You should be able to add a disallow directive for that parameter and any others to block our crawler from accessing them. It would look something like this:

User-agent: Rogerbot
Disallow: ?utm

etc., until you have blocked all of the parameters that may be causing these duplicate content errors. It looks like the _source* might be what's giving our tools some trouble. It looks like Logan Ray has made an excellent suggestion - give that formatting a try and see if it helps!

You can also use the wild card user-agent * in order to block all crawlers from those pages, if you prefer. Here is a great resource about the robots.txt file that might be helpful: https://moz.com/learn/seo/robotstxt We always recommend checking your robots.txt file with a handy Robots Checker Tool once you make changes to avoid any nasty surprises.

In this case, it looks like it could be two things: a formatting issue, and the fact that these pages are canonicalized to themselves. Here's the canonical tag as it appears on http://thespacecollective.com/space-memorabilia/page/3:

href="http://thespacecollective.com/space-memorabilia/page/3/" rel="canonical" />

From looking at https://moz.com/learn/seo/canonicalization, it looks like that's sort of backwards from how canonical tags are normally formatted:

I think it's possible that if you switched the formatting around, you might see these duplicate title issues stop showing up.

Hi there! Tawny from Moz's Customer Support team here. 
Pages are considered by our tools to have duplicate titles only if their titles are exact matches. There is no notion of overlapping or partial matches for this purpose. Like duplicate content, canonical versions should be considered, but not pages that refer to the canonical version. Furthermore, two pages with blank titles should not be considered duplicates of one another.

​It's entirely possible that Google is sophisticated enough to recognize pagination and not see duplicate page titles, but our tools will still have this issue if the page's title tags are identical.

You can verify the page title by viewing the source code of the page itself. I hope this helps! Feel free to give us a shout at help@moz.com if you have any other questions or if there's anything that needs clarifying!