Google not resolving multiple domains

When 3 URLs point to the same IP and on same DNS

[coco]

I have 3 URL's pointed at the same IP and on the same DNS - mysite.uk.com, mysite.co.uk and mysite.com. The .com was the latest addition about 4 months ago. Google gives the same info (number of links, spidered pages etc.) under the first 2 URL's but the latest .com has no info relating to it at all and a grey PR on the home page. The PR on the internal pages are the same PR=4 under all 3 domains. All a bit strange - google is treating the new domain as a different site.

The only explanation I have so far is that google hasn't updated it's DNS for the new domain and possibly treating it as duplicate content. Is there anyway I can check this and if it was true what can I do about it?

My main concern is the new domain is used for building link popularity and if google doesn't show any links for this, will it then ignore links comming to it?

[ciml]

Making identical content available on multiple addresses can cause problems. I'd say that you've been fortunate; Google recognised at least some of the pages on the first two domains as duplicates and merged them.

It seems odd for the latest pages not to be merged with the others or listed separately. Four months is a long time, can you tell if Google has crawled these addresses?

For link popularity building, I would be more comfortable using one domain for people to link to.

[coco]

Thanks ciml, just to clarify there is only one site with 3 domains all pointing to it.

Unfortunately, I still waiting logs, but the site is being spidered.

I realize that using one domain to build link pop is the best way, but the one being used is the new domain which google hasn't resolved. There are a lot of links coming into this domain and I'm a bit concerned that these will be ignored by google.

[ciml]

...just to clarify there is only one site with 3 domains all pointing to it.

I'd rather make you less clear about that.

example.com/aaa/ and example2.com/bbb/ are different URLs. example.com and example2.com are different URLs. You consider then to be the same site, but this model exists in your mind (as it would most people who studied the content).

If Googlebot visits the different URLs (or even the same URLs but different URIs suppose) and finds the exact same content then it can merge the listings; ignore one completely; ignore both; include one but ignore its links; or list them independently, each with their own links.

Could it be that while the new domain is four months old, the links to it are too new to count? Just a thought.

[coco]

ciml, apologies for my ignorance.

You could be right about the links being too early to count, but I know that some of the links are at least as old (4 months) as the URL. How long does it take Google to start counting new links?

[ciml]

> How long does it take Google to start counting new links?

One or two updates, depending on when the page is crawled and when the link is added.

Usually, this is up to eight weeks. To have had links from pages with good PageRank for more than four months and not be listed seems odd.

[coco]

Thanks again ciml. I’ve just checked the sites again and the latest update has brought some changes with it.

Google is definitely showing a preference for mysite.co.uk and uses it in the serps. When I check the pages listed under mysite.uk.com
(site:www.mysite.uk.com keyword) all the pages are listed under mysite.co.uk.

When I do the same with mysite.com (new URL) a single directory is listed without the description. This directory is blocked by the robots.txt.

Am I right in thinking, google has updated its DNS database? (because at least it’s listing the blocked directory).

It also seems as though google has merged the first two URL’s as you had suggested and treating the new site as having duplicate content? The one directory which is blocked is listed because it doesn’t know it’s content? It’s still treating the first two URL’s differently to the new one. May be the next update will resolve all this?

What I really want to know is the effect on link pop when sites are merged. Does the links get added together or is the link pop of one discarded?

[ciml]

I'm not quite sure what you mean by "google has updated its DNS database?" regarding the new site or "listing the blocked directory". Also the following question, if you try to explain just what you see then hopefully I'll catch up.

> It also seems as though google has merged the first two URL’s as you had suggested and treating the new site as having duplicate content?

As for the merged listing when Google identifies duplicates; normally (always?) Google does credit the listing with both sets of backlinks, and therefore PageRank.

[coco]

>I'm not quite sure what you mean by "google has updated its DNS database?"

On a previous thread I was lead to believe, the new domain was not listing because of google not having updated it's DNS database. So it was still looking at the .com URL's previous IP address. As as it now had listed a robots.txt blocked directory from the site, I assumed this was no longer an issue.

> It also seems as though google has merged the first two URL’s as you had suggested and treating the new site as having duplicate content?

The new google listings show the same pages listed under both the .uk.com and the .co.uk, when you do a site:www.mysite.ext
e.g site:www.mysite.uk.com
shows
www.mysite.co.uk/page1.html
www.mysite.co.uk/page2.html
www.mysite.co.uk/page3.html
www.mysite.co.uk/page4.html etc

and site:www.mysite.co.uk
shows
www.mysite.co.uk/page1.html
www.mysite.co.uk/page2.html
www.mysite.co.uk/page3.html
www.mysite.co.uk/page4.html etc

showing preference for mysite.co.uk

but no info for
site:www.mysite.com the new domain

So I'm assuming the first two doamins have been merged and the .com hasn't?

[ciml]

> So I'm assuming the first two doamins have been merged and the .com hasn't?

I would expect that the .com listing would be merged into the .co.uk listing or the .com addresses would be listed, but poorly ranked as the .co.uk has the links.

For the .com to be missing after four months seems strange.

[coco]

Must be a google thang, guess I have to wait and see what happens next update?