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  #1  
Old January 5th, 2005, 04:34 PM
xMANIGHTx xMANIGHTx is offline
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CLASS A IPs?

I would like to know if links coming from different class A IPs are considered as if coming from different class C IPs, adding relevancy to them.

I tryed class C checker tool at http://www.webmaster-toolkit.com/ on 2 domains of mine and this is the answer
The 2 domains are NOT hosted on the same Class C IP range.
www.audiopro.it is hosted on Class A IP 62.149.130.100
www.cinecittavideo.it is hosted on Class A IP 62.149.130.145
Thanks for your replies.

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  #2  
Old January 5th, 2005, 08:12 PM
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I would like too know also. I have heard the terms used but don't know the difference between Class A-C. I have a directory I wanted to host on the same server as my site and pass links. I am wondering if this would be a good or bad idea regarding the IP Classes.

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  #3  
Old January 6th, 2005, 12:22 AM
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A class C is a block of 254 ip addresses. The IP addresses listed in the first post are on the same class C. A class A is a block (to keep it in the same terms) of 16+ million addresses. A class B is a block of 65,000 (and some change) IP's.

Class C: 62.154.130.0 - 62.154.130.255 (.0 and .255 are reserved)

Class B: 62.152.0.0 - 62.154.255.255

Class A: 62.0.0.0 - 62.255.255.255

There is more to this but that is another question.

Last edited by Gr8ted3s : January 6th, 2005 at 12:26 AM.

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Old January 6th, 2005, 04:48 AM
xMANIGHTx xMANIGHTx is offline
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There must be something else because the tools recognizes each single IP as a Class A IP

www.audiopro.it is hosted on Class A IP 62.149.130.100

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Old January 6th, 2005, 09:06 AM
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are you asking from a networking standpoint? the ranges of each class of ips?

Class A 1.0.0.1 to 126.255.255.254 Supports 16 million hosts on each of 127 networks.
Class B 128.1.0.1 to 191.255.255.254 Supports 65,000 hosts on each of 16,000 networks.
Class C 192.0.1.1 to 223.255.254.254 Supports 254 hosts on each of 2 million networks.
Class D 224.0.0.0 to 239.255.255.255 Reserved for multicast groups.
Class E 240.0.0.0 to 254.255.255.254 Reserved.

this is the only classes of ips ive come to knowabout unless there is another defintion of "ip class" when dealing with the same network number

im having trouble understanding exactly what youre asking xMANIGHTx...

Last edited by alloemseo : January 6th, 2005 at 09:11 AM.

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Old January 6th, 2005, 12:36 PM
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He's talking about from an SEO standpoint. No, there is nothing else.

I tried to put it into simple terms, alloemseo is more accurate but also probably a little more confusing to the average Joe.

Here is the output I get for the domains you listed:
The 2 domains are NOT hosted on the same Class C IP range.
www.audiopro.it is hosted on Class A IP 62.149.130.100
www.cinecittavideo.it is hosted on Class A IP 62.149.130.145
When they are referring to a Class A IP they are talking about where in the range, that alloemseo is referring to, the IP's fall. It has no bearing on what you are trying to discover.

For example:

The 2 domains are NOT hosted on the same Class C IP range.
www.audiopro.it is hosted on Class A IP 62.149.130.100
www.microsoft.com is hosted on Class C IP 207.46.250.252

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  #7  
Old January 6th, 2005, 03:34 PM
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im having trouble understanding exactly what youre asking xMANIGHTx...
Thanks alloemseo I found the same definition
Class A 1.0.0.1 to 126.255.255.254 Supports 16 million hosts on each of 127 networks

Since inbound links coming from different class C IPs carry more relevancy to the target site I was wondering if different class A IPs are considered like different Class C IPs.
It seems so from http://www.webmaster-toolkit.com/ anyone knows this for sure?

Infact in class A the last triplet identifies the host, while in class C only the last number identifies the host.
So it seems that to have a completly different network on Class A you should have the first number different. While in Class C the whole first triplet identifies the network.
http://www.webopedia.com/DidYouKnow/Internet/2002/IPaddressing.asp

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Old January 6th, 2005, 11:09 PM
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I think you are putting way to much effort into this.

In my opinion, a different class A address will give you no more weight than a different class C address. But if you can prove me wrong here, I'd welcome the data.

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Old January 7th, 2005, 04:39 AM
xMANIGHTx xMANIGHTx is offline
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Thanks Gr8ted3s for the replies but I guess I've been misunderstood.
I'm not looking for more weight from Class A links, but was just wondering if having different Class A IPs as in the example I posted above is considered like having links on different Class C IPs or is considered like having them on same Classs C IPs, since links are on the same network: 62.149.130.100 - 62.149.130.145

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Old January 15th, 2005, 12:59 AM
Angelina Angelina is offline
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YIKES .. You lost me !

I understood that the 3rd group of numbers needs to be different in the Class C block IP's.
i.e. ... 216.149.132.19 vs 216.149.133.19 ... Now your whole Class A explanations really confuse me.

Anyway ... speaking of Class C IP's ... I am in desperate need of new hosting.
I have been with my current host since 1997 (when dedicated IP's were plentiful).
Recently they have given all clients notice that they will be moving everyone to shared hosting.

I need to find hosts offering Dedicated IP's in different C Classes ... or should I also be looking for A Classes ?
If anyone has any suggestions would you please post here or E-mail or PM me.

Thank You so much.

Last edited by Angelina : January 17th, 2005 at 11:47 AM.

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Old January 28th, 2005, 12:44 PM
Angelina Angelina is offline
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OK ... got several new A-Class IP addresses ... Sooo, if the third group of numbers is different .. is that what distinguishes whether it is in a different c-class (among the A-class numbers) ?

I understand what alloemseo has said in his post of 1/6 ... this is the information I got from Google as well.

However, in that A-Class group between 1.0.0.1 to 126.255.255.254 ... so long as the third group of numbers are different that is what differentiates the c-class, so far as SEO is concerned ??

This all gets VERY confusing but it DOES make a difference ... according to many SEO professionals.

Last edited by Angelina : January 28th, 2005 at 07:15 PM.

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