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The Class C IP Checker from Free-SEOtool.com allows you to verify whether multiple domains are hosted within the same Class C IP range, which is critical when evaluating backlinks or managing private blog networks (PBNs). Identifying overlapping IPs helps ensure link diversity, boosts SEO safety, and avoids red flags from search engines.
More information about the Class C Ip Checker tool!
Class A and B are assigned to very large and medium-sized organizations. Class C is the most popular class of addresses assigned to small companies and are the most used IPs. Small and medium-sized internet service providers purchase a pool of class C IP which they assign to their customers. Internet service providers provide dynamic (shared) IP addresses to their customers. The reason for this is that since they are shared, they are cheaper and more popular. Secondly, the users that are assigned IPs do not use them 24/7. So when a user signs of or there is no traffic to a website, their IP addresses are assigned to other users and websites.
The pros of C class dynamic IP addresses are that they are cheap and more feasible for websites and users who are not heavy users of the internet. If you have five people sharing a WiFi in your home, you will be assigned a dynamic address, and when you are not using the internet, your address will be assigned to another user who just signs in. When you use the internet again, you will be assigned a different IP. This IP will be assigned from the available pool of class C IP address range that your internet service provider has purchased.
| Benefit | Details |
|---|---|
| 1. Detect Duplicate IP Blocks | Instantly see if domains share the same Class C subnet, which is vital for safe link building. |
| 2. Enhance SEO Backlink Audits | Avoid penalties by ensuring your backlinks come from diverse IP addresses across different networks. |
| 3. Analyze Competitor Hosting | See if your competitors use the same hosting infrastructure or PBN strategies. |
| 4. Quick, Accurate & Free | No registration or tools needed—just enter domains and get Class C IP comparison instantly. |
| 5. Ideal for PBN Management | Monitor IP diversity across your own domains if managing a network of SEO sites. |
Every device that connects to other devices to the internet is assigned a unique IP. For systems to locate each other on distributed networks, like the internet, each node on the network is assigned a unique address. Kuwait Bus Route - Latest Bus Routes in Kuwait and Bus stops https://kuwaitbusroute.blogspot.com
This address is commonly known as ‘IP address’ or ‘IP.’ The IP address is a 32-bit binary address which consists of two sub-addresses that identify the network and the host of the network. The IP address consists of four sets of numbers ranging from 0 to 255 separated by a (.) in decimal form. For example, 192.68.100.4 is a valid IP.
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There are five class of IP address and our concern is with IP Class C which are:
The first bit of a class An address is always set to 0. It only leaves seven bits for the network portion of the address. Class A addresses range from 0.0.0.0 – 127.0.0.0. It means there can only be 128 network numbers.
The first bit of a class B address is always set to 1 and the second bit is set to 0. It means 16,384 networks can be assigned class B addresses. The numbers range from 128.0.0.0 – 191.255.0.0.
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Class C addresses have their first two bits set to 1, and the third bit is set to 0. It means 2,097,152 networks can be assigned this class of address. The numbers range from 192.0.0.0 – 223.255.255.0. Class C IP Address Example is 123.789.456.1
Class D addresses have their first three bits set to 1, and the fourth bit is set to 0. Class D addresses are used for multicasting applications. The numbers range from 224.0.0.0 – 239.255.255.255 and are reserved for multicast groups.
Class E addresses are reserved for experimentation and testing and have never been utilized in any standard form.
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The Class C IP Checker from Free-SEOtool.com is a simple yet powerful tool designed for SEOs, digital marketers, and developers to analyze IP subnet overlap, protect against SEO risks, and improve link-building strategies. Whether you're running audits, analyzing backlinks, or managing multiple domains, this tool ensures you're making smart, Google-friendly decisions. Try it free today—no login, no limits.