Class C Ip Checker

Enter up to 40 Domains (Each Domain must be on separate line)


About Class C Ip Checker


About Class C IP Checker

Class C IP address checker is a tool to find duplicate IP addresses of class C blocks. Identify If any spam sites using the same class C IP blocks.



The Class C IP Checker is very simple to use. In the text area, enter the domain name of the sites for which you want the Class C IP to be identified. Click the 'Get Info' button after inputting the domain names in the c class IP checker. The test will be done and the results will be returned by the utility.

Enter up to 20 domains in the text area (each domain must be on its own line) • Click the "Get Info" button

C class IP checker will display the host names you entered in the results, along with their IP address, Class C IP, and status.  The results will show you the hosts that share the same class C IP address, and if the status is 'valid,' everything is fine. This duplicate IP address checker tool is useful for determining whether other websites are using the same IP addresses.


Every device that connects to the internet is allocated a unique IP address. One node in a distributed network, such as the internet, is issued a unique address in order for systems to locate each other.

This address is frequently referred to as a 'IP address' or 'IP.' The IP address is a 32-bit binary address made up of two sub-addresses that identify the network and the network's host. In decimal form, an IP address consists of four sets of numbers ranging from 0 to 255 separated by a (.). For instance, is a valid IP address.


There are five class of IP address and our concern is with IP Class C which are:

  • A class  -  The initial section of a class An address is always set to 0 by default. There are just seven bits left for the network component of the address. The Class A address range is to It follows that there can only be 128 network numbers.
  • B Class  -  A class B address's first bit is always set to 1 and its second bit is always set to 0. This implies that class B addresses may be issued to 16,384 networks. The IP addresses range from to
  • C class  -  The first two bits of Class C addresses are set to 1, while the third bit is set to 0. This indicates that this class of address may be issued to 2,097,152 networks. The IP addresses range from to 123.789.456.1 is an example of a Class C IP address.
  • D class  -  The first three bits of Class D addresses are set to 1, while the fourth bit is set to 0. Multicasting apps employ Class D addresses. The numbers are designated for multicast groups and range from to
  • E class  - Class E addresses are only used for research and testing, and they have never been used in any standard form.



Class A and B organisations are extremely big and medium-sized, respectively. Class C addresses are the most often issued to small businesses and are the most commonly utilised IPs. Small and medium-sized internet service providers buy a pool of class C IP addresses and allocate them to their clients.   Customers of Internet service providers are given dynamic (shared) IP addresses. This is because they are less expensive and more popular since they are shared. Second, individuals who are allocated IP addresses do not utilise them continuously. As a result, when a person logs in or there is no activity on a website, their IP addresses are given to other users and websites.

The benefits of C class dynamic IP addresses are their low cost and suitability for websites and people who do not often use the internet. If you share a WiFi network with five other people, you will be issued a dynamic address, and while you are not using the internet, your address will be allocated to another user who just logs in. When you reconnect to the internet, you will be issued a new IP address. This IP address will be allocated from the available pool of class C IP address ranges acquired by your internet service provider.



The Class C IP Checker tool determines if several domains on shared hosting share the same class C IP address. It also helps in locating duplicate IP addresses of class C blocks.

There are risks connected with dynamic class C IP blocks since they are shared across numerous nodes. If your website has a changeable C class IP address, it may damage its search engine rating, and your SEO efforts may be squandered. If a website with the same IP address as yours is banned, your website may also be blacklisted. It occurs when a website gets blacklisted by a search engine. It does not ban a website just based on its domain name, but also on its IP address. When search engines visit a website, they do so using the IP address, which is the domain's unique identification. Internet service providers anticipate this eventuality, and if a website is banned, they reassign new IP addresses to the other websites that share the same dynamic class C IP address range.

Firewalls and other essential programmes and hardware are installed by Internet service providers to guarantee that their hosting service provider systems stay 'clean' and untouched by hostile assaults. Because hackers and other dangerous persons are always attempting to get into and harm websites, internet service providers are required to take precautions to secure their networks and hosting services.



If you have just acquired a hosting provider for your website, you will be curious as to whether other websites use the same Class C IP address. Because your website has most certainly been allocated this class of IP address, which is shared with other websites.
You may do a class C IP address check at any moment with this handy tool from



  • It aids in the identification of spam sites if they share the same IP address of class C blocks.
  • You may find duplicate IP addresses as well as IP addresses from class C blocks. If one of the domains is engaged in fraudulent activity, taking an important action on time can protect your site by blocking it and reducing the possibility of being blacklisted by Google and other search engines. Maintaining a frequent check on your domains with the Class C IP Address Checker tool can help protect your search engine ranking.

You may also run a mass c class ip checker. Check out some online sites for c class ip. This test will determine if the websites are clean and what mechanisms are in place to defend them from viruses, spam, and malware.



Bonus Understanding on Class C IP:

In the IPv4 IP address space, there are five classes: A, B, C, D and E. Each class has a specific range of IP addresses (and ultimately dictates the number of devices you can have on your network). Primarily, class A, B, and C are used by the majority of devices on the Internet. Class D and class E are for special uses.

The list below shows the five available IP classes, along with the number of networks each can support and the maximum number of hosts (devices) that can be on each of those networks. The four octets that make up an IP address are conventionally represented by a.b.c.d - such as


Class C Public & Private IP Address Range

Class C addresses are used in small local area networks (LANs). Class C allows for approximately 2 million networks by using the first three octets for the network ID. In a class C IP address, the first three bits of the first octet are always 1 1 0. And the remaining 21 bits of first three octets complete the network ID. The last octet (8 bits) represent the host ID and allows for 254 hosts per network. Class C network number values begins at 192 and end at 223.

  • Public IP Range: to
    • First octet value range from 192 to 223
  • Private IP Range: to
  • Special IP Range: to
  • Subnet Mask: (24 bits)
  • Number of Networks: 2,097,150
  • Number of Hosts per Network: 254


Class C IP address checker is a tool to discover duplicate IP addresses of class C blocks. Identify If any spam sites sharing the same class C IP blocks.