Can somebody explain this: Don't cross-link from any domains that you own or any domains that share the same Class C Block of IPs. OK I know what cross-linking is but.... I have 5 sites and want to mainly just learn the part about linking sites from the same class C IPs. How do I know if they share the same Class "C" IP? Can different hosts share the same Class C IP? No laughing - I have to learn sometime. How do I find out if my sites share the same Class C IP? Thank You -
That's a good question michael007 and i'm not laughing be sure. I'm also trying to know if my sites are C class IP or not due i have to learn also, so pls someone post here how to know if a site is hosted on a C class IP ...
The first octet, also called the Net, of an IP address (for example, the 127 in 127.0.0.1) shows which class an IP falls under. The following octets determine the host. Class A - Usually big, international networks. First octet ranges between 1-126. Example: 67.254.199.1 Class B - Medium-sized network. First octet ranges between 128 and 191. Example: 167.254.35.10 Class C - Usually much smaller networks - expect to see small to mid-sized businesses in Class C IP blocks. First octet ranges between 192 and 223. Unlike the previous blocks (although Class B does it partially), Class C uses all octets to determine the Net, except for the final octet which determines the host. Example: 207.46.25.118 There's also class D and E but it's highly unlikely that you need (or want) to know about those. Don't sweat the IPs. There's a lot of back and forth about how important they are, but in the end you're not going to get penalized for linking between sites with the same IP class. More attention is paid to the Domain, at least in terms of Google. Here's a quote from Craig Silverstein, Google Director of Technology. It's from last year, but I'm assuming it still holds true: "Actually, Google handles virtually hosted domains and their links just the same as domains on unique IP addresses. If your ISP does virtual hosting correctly, you'll never see a difference between the two cases. We do see a small percentage of ISPs every month that misconfigure their virtual hosting, which might account for this persistent misperception--thanks for giving me the chance to dispel a myth!" (if there's anything regarding IP classes which I'm mistaken about, please feel free to jump in and correct me) Edit: Sorry, forgot to answer your question about determining your host's class: ping 'em. I'm assuming you're running Windows, just open a command prompt and type: ping yourwebsite.com
Really thanks for your wide explanation dude, i made a ping for my site and i got the following IP: 209.59.181.203, so i'm running on a Class C right?
Nice, thanks for the technobabble Nick. Great response! The theory here is that you don't want to link a bunch of sites that live on the same machine(or reside on the same cblock).... but the snip from his quote is spot on. If the virtual hosting is set up properly it should not be a concern. I am not sure the same theory applies to addon domains. I will have to check my test server to opine about that. thanks, Nigel
I host about 5 sites with same hosting provider, how can i check if my provider hots too many sites on same place?, what's the critical number?, i mean: if i found that my provider is hosting xxx number of domains on same server, how can i check if this xxx number is into the limits or not?.-
Easiest way is to call your host and ask. That said, there are two main camps on this issue: some people think it has very little effect on your SERP placement, while others argue the opposite. Here's an article from Bruceclay.com which argues the latter. http://www.bruceclay.com/blog/archives/2007/03/which_is_better.html Some of it makes sense, although I don't think Lisa Barone's research really proved it one way or the other. In my opinion, based on my own experiences, having 5 websites on the same IP isn't going to cause any problems, unless you're engaging in spammy tactics. EDIT: In the interest of honesty, although I don't think that it should be anywhere near the top of your list for SEO improvements, I do use unique IP addresses on some of my websites, depending upon their content and who they're for. Just in case.
Ok a little self promotion if you do not mind the extended reading of an article i did on SEO Hosting and an explanation of C class IP's, DNS rotations, domain registration companies, etc. read it here It does work if you have your sites spread out and the DNS servers setup properly, the article is quite long that is why I did not just paste it in here.
Article was inaccurate on several technical points. The merit of SEO-geared hosting is also questionable, as I've yet to see any reports measuring significant statistics.
Interesting. I don't think the dedicated IP evidence is conclusive though. As suggested in one of the comments, dedicated IP websites will tend to have more resources invested in them which reflects in the search results. I don't leave things to chance though. Although I don't use dedicated IP's I do tend to host sites which I interlink on different c block IP's.
@ NickF - That was an incredible explanation, i knew about C class, but a and b class are new for me. Thansk for that, appreciate it mate.
Great explaination man. Thank you very much, NickF. Like oranges, I didnt know about class A and B. Maybe hosting on 2 different hosts might help.
Exactly. It would be an interesting study to actually perform, but it would have to be under controlled circumstances, where all the other factors are equal. Naturally, the top results for competitive keywords will have invested more in SEO as a whole - it'd skew all the results from Lisa Barone's examination.
Really thanks for your explanations NickF, i'm learning a lot , BTW i'm running 5 domains on same server not for promotions or some simmilar, i'm doing just for the mooney (is less expensive to me host 5 domains on same account than pay for separated hosting accounts and separated IPs). Thanks again dude.-
An IP consist of 4 parts AAA.BBB.CCC.xxx - the first part is called A-class, the second part B-class and the third part C-class. So any IP under the last part will be in the same C-class. So for example: 123.123.123.1 and 123.123.123.2 are in the same C-class but 123.123.123.1 and 123.123.124.1 is in two different C-classes Many smaller hosts only mange one single or very few C-classes and therefore makes it difficult to get multiple IPs in different C-classes if you host all your sites the same place. Larger hosts have many C-classes (I believe some even have almost full B-classes but unless you specifically request your various sites to be on different C-class IPs you still could end up on the same. It's usually not something hosts care about (in relation to SEO and linking)
Thanks all of you to share your views about class C ip. This information is really helpful for me. Thanks
I remember from some time ago Hostgator offering "seo hosting" ( That included only C class IP ), but I'd say that it it doesn't make any difference for google, the websites I have worked with were usually on the shared hosting and I didn't really feel any difference from the websites that were on so called "seo hosting". Also from my experience cross-linking your domains is safe.
SEO hosting is only beneficial if you are creating a blog farm/site farm where all of the sites that you own are linking to each other. Hence the importance of SEO Hosting since all of your IP's that your sites sit on are on a different C Class. This way if you have 10 sites on 10 different C Class IP's you can link them all together without being penalized. Search engines do not ban by the IP, they ban by the domain name. If they banned an entire IP range from a shared hosting company, then every site in that range would be screwed. That makes no sense for them to do it that way. Not to mention, when you put in a re inclusion request with Google, you are putting in a domain name to be re indexed, not an IP address. The only time you can be penalized for being on the same IP address as a porn, gambling site, etc. is if YOU are linking to them. If Google see's that sites on the SAME C Class IP are linking to each other they can penalize those sites.