Enter up to 40 Domains (Each Domain must be on separate line)
A Class C IP Checker allows comparisons of the IPv4 addresses of websites. This can be helpful in the following situations: research hosting arrangements, check domain migrations or find out whether it seems like sites are part of the same range of network infrastructure. You can perform this type of search on its own webpage on Free SEO Pro. However, an address comparison does not imply common ownership nor prove that websites share a particular hardware web server nor can it be used to foretell search rankings. A helpful place to begin is to be familiar with the numbers and which conclusions they support.
A Class C IP Checker is typically used for checking the IP address of websites and checking the similarity of their IP network part of IP address. In the old classful IPv4 terminology, Class C addresses are those in the range of 192.0.0.0 – 223.255.255.255. This historical classification is different than today's definition of a subnet.
Most networks today employ Classless Inter-Domain Routing, commonly referred to as CIDR. The number of leading bits that define a network is called a network prefix, such as /24. Many times the first three octets of an IP address are a /24 IPv4 block, but the actual network allocation may be larger or smaller.
Through the process of DNS (Domain Name System) Resolve, a domain name can resolve to one or more numerical addresses. An A Record provides an IPV4 address. The AAAA record provides an IPv6 address.
The typical type of checker looks up the addresses of the hostnames provided, and then compares all the relevant bits of an ipv4 address.
There are a lot of unrelated websites utilizing shared hosting or similar content delivery network. They can own to the same address but resolve to a different. On the other hand, sites of one company may be bounced to entirely different networks.
Live input interface was not looked at in preparation. The following workflow is really simply a guideline, not an actual description of all controls of Free SEO Pro.
Go to the Class C IP Checker page.
2. Locate the "domain," or "website address," field.
3. Prepare public hostnames that you want to compare.
4. Fill out the addresses in the format called for by the page.
If it is allowed to enter more than one, follow the instructions for the separator that are shown.
6. Perform the lookup (you'll find an action button to do this).
7. Review all returns of IP addresses and networking comparisons.
8) Double-check suspicious results using a different DNS query.
Root domain may have different resolution than the www subdomain. A complete page URL is a protocol and maybe a path; know about DNS regarding the hostname of a computer.
Imagine two example websites resolving to 203.0.113.10 and 203.0.113.25. Both addresses have the same three octets, and are in the same documentation prefix, 203.0.113.0/24.
Now consider another third case with resolution: 198.51.100.40. The first three octets are not the same. All three addresses have been made up, as they are not found on the web as such.
In this case, the first two pair have the same /24 lowercase. It does not indicate if both sites are using the same server, owner, data center, or even hosting account.
First, use the complete IPv4 address. The address is specified with a series of four numbers that are each separated by periods and represent decimal octets. Then, compare the prefix that the tool highlights, if it highlights a prefix.
Two addresses that have the same first three octets match at the /24 level. Only that one observation can't tell us what routing policy is used, what hosting company they are with, or what relationship exists between the websites.
IPv6 uses different sort of addressing and a significantly greater addr space. IPv6 doesn't use the old Class C terminology. For hosts that publish AAAA records in the network, be sure to use an IPv6 aware DNS or network lookup.
Check if the domain resolution is the same as the address given by your host. If a migration just happened, wait for DNS caching to come to pass before considering an unexpected result as errant.
A network comparison can see you organize research in a manner across websites. Write down addresses/dates and look into other shared infrastructure by sources other than the assumption of domain relationship.
If a website refuses to load, make sure that DNS resolves and check the server separately. A common prefix won't indicate the state of the application, the HTTPS configuration, or the server itself.
Questions about the configuration of a site may come up during infrastructure checks, but there is no factual evidence that different Class C addresses have a positive impact on rankings or that common prefixes coupon.com and coupons.com lead to a negative ranking.
There's one mistake that people make that is mixing up a prefix of /24 with sharing of the physical server. One of these challenges is recognizing a change in an IP address as hacking. Addresses may be observed as changing due to CDN, migrations, and load balancing.
When no address is displayed, check for correct spelling, incorrect DNS Records and whether the domain is active. The hostname may have only published its IPv6 records or had transient resolution issues.
A Class C IP comparison won't verify site ownerships, pinpoint malicious pursuits, gauge website backlink quality, or determine a penalty from a search engine. It is also not a substitute for a security evaluation, or for a network routing analysis.
The conditions for input, output fields, requirement accounts, price and how the information will be treated upon submitting the page were not verified. Do not enter any private hostnames or vulnerable urls without first examining the policies of such a site.
The Domain into IP utility is designed to find an address which may be associated with a single hostname. More information about domain configuration may be obtained by using Find DNS Records.
If your primary question is related to HTTP responses, then the Server Status Checker can be used. Whois Checker can be used to help with publicly available domain registration information research.
These tools ask for a variety of answers. Appropriate checks when combined result in a more useful technical picture than a single IP prefix.
Makes it easier to compare IPs of web sites (usually first 3 octets of an IP). The comparison may show matching prefixes, but it is not an indication of shared ownership or hosting.
Class C was an old class for IPv4 addresses. networks today use CIDR prefixes instead, and the word is usually not used in an accurate way in today's web hosting arrangements.
Using a suitable public hostname, use a hostname/dns resolving tool to look up the host and check the actual address returned. If you are researching changes to your configuration, then compare it with your hosting records.
Yes. For many unrelated websites, a web server with one public IP address can host them through shared hosting and reverse proxies and the CDN, or content delivery network, can supply the content without the implication that the website owners are related.
No. They specify a similar /24 prefix for these IPv4 addresses. More detail is needed on actual hosting including provider details and configuration of the server.
Different Class C prefixes are not consistently an advantage in rank. Prioritize instead helpful content, accessibility, technical health, and legitimate links.
No. IP address comparison can not reliably determine ownership. Records from the public domain or official company information might be helpful, but each of these are also limited.
Different addresses are a result of hosting migrations, DNS updates, load balancing and CDN routing. Before assuming that something is amiss, compare current DNS records to your provider's configuration.
Yes. There can be multiple A records for a domain and answers may differ based on location. One address shown is not necessarily every address at which you can make connections.
No. Class C is legacy (IPv4) address class. A different structure is used with IPv6, and comparisons should be based on relevant IPv6 prefixes not on IPv4 octets.
The /24 is used to indicate the first 24 bits of the IPv4 address are the network bits. Often matched means the first three decimal octets of an IP address.
They might employ distinct DNS resolvers, locations, caching or query times. Make sure you typed in the same hostname and cross-check currently authoritative DNS data as needed.
Not just on the basis of addresses alone. Check for availability using an HTTP status checker or an adequate monitoring service and then check if the web page is displayed as expected in a browser.
Not automatically. Shared addresses are found in different hosting sets up and CDNs. Security is based on the real configuration and vulnerabilities, it is not necessary based on whether multiple domains share an address.
List the hostnames, addresses and date checked. Always assume that if the relationship is significant, don't just rely on a prefix, but examine DNS records and provider information.
