unique IP with same host vs unique hosting account

[parttimepoker]

sorry if this is an old question.

some hosts, such as dreamhost, allow you to assign unique IPs (for a cost) to as many domains as you want under one hosting plan.

from a SE point of view, is this unique IP the same (or close to the same) as a separate hosting account, or is there something obvious i'm missing?

is the biggest issue that the IPs could come from a single or similar block?

[GFPC]

Good question!

Personally the only time i think it matter is for interlinking your sites. But I could be wrong. I have read all sorts of things on this and most say its best to have separate hosting companies.

Hope some SEO buffs step in and clarify.

[Lech_Walesa]

if you have shared hosting plan and don't interlinking your sites on particular host it is ok, Google can't see that all is yours, a sure thing they must be all private domains

[Self Made]

x-post from here:

I found this interesting:

Followed IPs - this is our highest correlated single link-based metric, and shows the number of unique IP addresses hosting a website that contains a followed link to the URL.

... since there's a regular debate around here about whether you should put your sites on/link from different IPs or C-classes.

[Lech_Walesa]

SEO hosting - WHTwiki - some info

[Self Made]

some hosts, such as dreamhost, allow you to assign unique IPs (for a cost) to as many domains as you want under one hosting plan.

HostGator said about my shared hosting plan: "You can only have one dedicated IP address per cpanel, to be able to have multiple you would need to setup a new account for each instance you want a dedicated IP address or consider our VPS/dedicated server solutions."

[Self Made]

SEO hosting - WHTwiki - some info

It says that in 2006 Google's Matt Cutts said it didn't make a difference. That was 4 years ago but unless there's something newer that conflicts with that I'd tend to believe it. The SEOMoz evidence seems to conflict with it, but it doesn't directly address it: it's possible that the different domains and different IPs correlations are the same, and they just measured it one way.

[Self Made]

It says that in 2006 Google's Matt Cutts said it didn't make a difference. That was 4 years ago but unless there's something newer that conflicts with that I'd tend to believe it. The SEOMoz evidence seems to conflict with it, but it doesn't directly address it: it's possible that the different domains and different IPs correlations are the same, and they just measured it one way.

The evidence says it's IPs that count the most. It turns out that SEOMoz did measure everything you can think of:

There are many choices in counting links. One can:
1. Count no-followed links, followed links, or both.
2. Count internal links, external links, or both.
3. Count one link from a given page to the target, or count only one link from a domain, subdomain, IP, or c-block.
4. Count links to the page, domain, or subdomain.

"The number unique IPs with a followable link to a target url" beat followed domains linking, followed c-blocks linking, etc. That doesn't mean the other things don't count. I don't have the correlation data for all those things. All I know is they said it was "our highest correlated single link-based metric."

So now I'm considering moving hosts (again; I don't want to) or shelling for a HostGator VPS, which can have many IPs. It doesn't sound like it's necessary to go beyond multiple IPs, though, to answer OPs question.

[Peter Willis]

None of the hostgator hosting packages will give you a wide range of class-c IP's (or whatever the kids call them these days). All you'll get is the end bit changed... i.e. 119.64.01.02 and then 119.64.01.03 ... 119.64.01.04 etc. So it would still be remarkably obvious to Google that they are all your sites.

[Self Made]

Peter:

I presented some evidence. Your reply implicitly disagrees with my post but doesn't present any contrary evidence. Evidence, not unsupported assertions, is useful to me.