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1 IP per domain - good for SEO ?

     
7:06 pm on Apr 13, 2011 (gmt 0)

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I noticed one of my domains that I recently associated with its own IP. (and no other domains hosted on that IP)

and SEO keywords and positions seemed to increase over a couple months time.

Is this a known SEO tactic to help boost ratings , by having domains hosted on their own IP ?

[edited by: tedster at 9:56 pm (utc) on Apr 29, 2011]
[edit reason] maintenance [/edit]

8:09 pm on Apr 13, 2011 (gmt 0)

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Is this a known SEO tactic to help boost ratings , by having domains hosted on their own IP ?

It used to matter, but nowadays since it's tougher and tougher to get a unique IP for every domain name or site, it is not as important anymore than it previously was.
9:39 pm on Apr 13, 2011 (gmt 0)

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It still seems to be pretty significant for me.

I'm wondering officially from google how much it matters. (but I doubt we'll ever know)

ohhh....the internal secrets I wish I knew about..
10:05 pm on Apr 13, 2011 (gmt 0)

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If you interlink your domains to boost ranking, then hosting separation is a consideration. That's not the same as one IP per domain... it's IP separation for sites that interlink.

It's been pretty widely discussed, but not recently. Here's a Google patent filed 2001, granted 2003, which discusses "local score"... which we've generally called "local rank"....

Ranking search results by reranking the results based on local inter-connectivity [patft.uspto.gov]

(PS: I don't think it's a good idea to interlink commonly-owned domains to boost rankings, but that's another discussion.)

[edited by: Robert_Charlton at 10:33 pm (utc) on Apr 13, 2011]

10:33 pm on Apr 13, 2011 (gmt 0)

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Interesting...but that link seems more like lawyer talk than anything else.

" when the local score reaches the relevant score...and then back to the local score...etc..etc. "

Kinda like the way politicians answer questions these days...
10:41 pm on Apr 13, 2011 (gmt 0)

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Here's the major WebmasterWorld thread I remember about the patent...

Google's 2 rankings & you
New patent means new way of ranking
http://www.webmasterworld.com/forum3/15073.htm [webmasterworld.com]

What the new patent implies is a ranking, then a reranking, then a weighting, and then a display.

Apart from the IP question... it's very likely that Google uses the procedure of ranking, then reranking, then weighting, and then a display in a great many of its algorithmic considerations these days.
1:24 am on Apr 14, 2011 (gmt 0)

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it's very likely that Google uses the procedure of ranking, then reranking, then weighting

I agree - and there's another curious sign. Notice how often you can't get the full 1,000 results these days? It shifted some time last year and probably points to some extra kid of refinement, but I just can't wrap my head around it so far.

When it comes to interlinking domains, as long as it's done for visitors and not to manipulate rankings, I have had no problems for several years even if the domains are sharing an IP address. The domains are openly registered to the same whois and it seems (almost) like Google evaluates all the domains like one big website.
6:36 am on Apr 14, 2011 (gmt 0)

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Unique IP is nothing if it is hosted under same nameserver. :P
6:43 am on Apr 14, 2011 (gmt 0)

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Hmmm, I think it's a bit more complicated than that seoN00B ... I have some sites registered at GoDaddy and use their NS system with custom A records, and I'm fairly certain they're not 'lumped in' with all the sites hosted at GoDaddy using the GoDaddy NS system ... I guess they could be, but I doubt anything's quite a simple as it seems.

My guess and experience says, unless there's some 'goofy interlinking' to try and hide it's probably 6 of one and half dozen of the other, maybe 5.9 of one and 6.1 of the other, but I haven't seen a difference in rankings based on shared or dedicated IP Address personally.