Entrez jusqu'à 40 domaines (chaque domaine doit être sur une ligne distincte)
In the eyes of search engines, where your links come from matters just as much as how many you have. If multiple sites linking to you share the same Class C IP range, it’s a red flag that they are owned by the same person or hosted on the same server. Our Free Class C IP Checker allows you to bulk-test URLs to discover their hosting blocks instantly. Ensure your SEO strategy is footprint-free and protect your site from "link network" penalties.
Avoid "Footprints": Search engines like Google use IP addresses to identify clusters of websites managed by the same entity. Diverse Class C IPs suggest organic, independent endorsements.
Hosting Audit: If you own multiple niche sites, checking their IP classes helps you ensure they are distributed across different data centers, providing a safer "buffer" for your network.
Verify Backlink Quality: Before buying a guest post or a link, check the provider’s IP. If all their "sites" are on the same Class C block, the SEO value of those links is significantly lower.
Identify Shared Hosting Risks: See how many sites share your server's IP neighborhood to evaluate potential "bad neighbor" risks.
Enter Your URLs: Paste up to 20-40 domain names (one per line) into the input box.
Run the Comparison: Click "Check IP Class."
Review the Report: Our tool will display:
The Domain Name: The URL provided.
The IP Address: The full numerical address.
The Class C Category: Specifically identifying the third octet of the IP.
Status: Highlighting any duplicate IP ranges found in your list.
Class A: Used for massive networks (e.g., 12.x.x.x)
Class B: Used for medium-sized networks (e.g., 172.16.x.x)
Class C (The SEO Standard): The most common for web hosting. An IP looks like 192.168.1.1. The "1" is the Class C block. If two sites are 192.168.1.5 and 192.168.1.50, they share a Class C block and are likely on the same server.
Q: What is a Class C IP address?
A: An IP address consists of four sets of numbers (octets). In the address 192.168.1.15, the "1" is the Class C octet. When multiple websites share this same block, it indicates they are likely hosted in the same location or managed by the same provider.
Q: Does sharing an IP range with other sites hurt my SEO?
A: Not necessarily for your own site's health, but it matters for backlinks. If you receive 50 links and they all come from the same Class C IP, Google may ignore them or view them as a manipulative link farm.
Q: Is this tool better than a standard IP checker?
A: Yes, because it is designed specifically for bulk comparison. It doesn't just show you one IP; it tells you if a group of domains are "neighbors" on the web.
