Does it help to have site's on different Ip's
 

For SEO does it matter if you use one ip or is it better to have differant ip's for each domain?

i heard that linking to your own sites that are all on one ip is bad for SE... at least for pr, one site of mine went down to PR 0, but i doubt its that reason: My other sites im linking to and -from still got PR 3

As long as your domains all end in the letters, sz.com then you're ok.

it`s bette to have different IP`s and different C-classes also.

If you are getting DDOS attacked it is always nice to have a round robin setup.

You for sure want all domains to be on individual IP's. If they are of similar theme, and interlinked, you will want them on individual Class C subnets.

For that, you can get hosting at a dozen different places, or you can come to GotWebHost.com

erm, OK.

:1orglaugh

I think that is true. I moved about a half dozen sites to a single IP and not only did they all lose their PR they tanked in Google listings and half of the listings no longer have descriptions. Doesn't seem to have affected my listings at Yahoo though.

ddos or dos really has several factors... host core router, host core switch, and depending on how the host is set up, possibly two more switches.

and all of these devices can have different thresholds of handling traffic. a good host will have a monitoring system that will alarm at certain thresholds and will have someone available to jump on the problem quickly 24/7.

a lot of it depends on what type of dos or ddos. single machine or hundreds of machines attacking. a typical host router is going to handle certain scales of attack that will crush the capacity of a smaller switch or a server. also depends on your bandwidth. 10meg pipe wont handle the same as 100meg obviously.

so, static ip's for each site is good and should preferably be on seperate c blocks as people already mentioned. keep in mind that if all the ip's sit on one machine, multiple ip's wont have any significance during dos/ddos.

i always use seperate ip's for another reason too. lets say someone uses your domain as a spam from. well when the net police add you to their block lists, they are also going to add all your domains so they can catch you if you move to a new ip address. so, if that happens, you just lost all your domains until you go beg the police and provide proof that it wasnt you.

finally, dod/ddos are a fact of life. most are pretty easy to stop and if your host is on top of things, then downtime will be limited. but, be patient, it takes time. if you call them, call once, get a status and then leave them alone. if a major attack is going on and impacting a lot of customers, a flood of calls is just going to add to to getting everything back up again.

well yes for security purposes

From what I've found, yes

i never heard of that.

It's a good idea to have it listed on separate ips, if something goes wrong you don't want all your sites getting banned...

Link them altogether and get banned by google but make a KILLING on yahoo and msn traffic.

http://www.eyesondesign.net/2002gallery/lemur.jpg

Uh... No. Google does not ban all the domains on a select IP.

By the way, you're safe to use the c-class IP range on your sites if you don't plan to interlink them together.