Mixed up Search Results - did other site enter wrong DNS?

[dakuma]

Hey everyone,
I've got an odd issue here, a client's site is being listed in Google's SERP's all wrong. It just started this morning, doing a simple search for the Company name returns several results that are part our site and part someone elses, it looks something like this:

OUR COMPANY NAME
description for another company entirely, nothing even close to a
similar industry at all..
www.linkToOtherCompany.ca/ 17k cached - similar - note this

If you click the above result the page errors out. Whois tells me that the other company has the same DNS entries as we do, so I contacted the hosting company and they tell me that there is no such site hosted by them. The hosting company contacted Google, who simply advised I consult Webmaster Central, thanks for your concern Google.

Is it possible their webmaster simply entered the wrong DNS? and would/could this somehow mess results up? I've never seen this before and I'm not sure what to do to resolve this. I do plan on calling the company on Monday to see if they have any answer etc.. but I'm hopeful that someone here has maybe experienced something similar to this.

Any help at all would be awesome!

[dakuma]

Update!

This morning for some keywords the results are now:

OUR COMPANY NAME
our company description/information from our
page as it should be and was for months
www.linkToOtherCompany.ca/ 17k cached - similar - note this

However the main URL is still going to the wrong site (which still errors out) and these results are not for keywords that should be confused at all, also I get the same strange results even when typing in our company name.

[g1smd]

Try the URLs using Live HTTP Headers, or similar, and see what HTTP response code you get.

[dakuma]

OK here are the results for our domain:

GET
HTTP Status Code: HTTP/1.1 200 OK
POST
HTTP Status Code: HTTP/1.1 200 OK
HEAD
HTTP Status Code: HTTP/1.1 200 OK
TRACE
HTTP Status Code: HTTP/1.1 501 Not Implemented

Results for other companies domain:
Connect to www.otherCompany.ca on port 80 ... failed
Error 1607012648:
Error while fetching URL

Not sure if this is exactly what you were looking for? 200 OK is good and obviously the other domain is not resolving at all, so I just can't wrap my head around how Google is combining two domains in 1 search result.