Reverse IP Lookup
Enter any domain or IP address to see all other websites hosted on the same server. Essential for PBN detection, link vetting, and competitive research.
Tool created by iNet Ventures
What is a Reverse IP Lookup?
Every website resolves to an IP address. Most websites — especially smaller blogs — share a server with many other sites on the same IP address. A reverse IP lookup does the opposite of a standard DNS lookup: instead of finding the IP for a domain, it finds all domains pointing to the same IP.
This is an essential due-diligence step for link builders and SEO agencies. A site with 5 neighbours looks very different from a site sharing an IP with 500 others — the latter raises serious questions about whether the site is part of a link farm or PBN.
Our tool resolves the domain to its IP, retrieves server information (ISP, organisation, location), and queries a reverse IP database to return all known co-hosted domains — all in a few seconds.
How to Use Reverse IP Lookup for PBN Detection
- Enter the suspect domain — paste the URL of any site you're evaluating for link building or competitive research.
- Check the server info — review the ISP, organisation, and location. Be cautious if you see obscure or foreign hosting providers.
- Review the domain count — 1–20 neighbours is normal. 100+ on a single IP is a strong signal of bulk or link-network hosting.
- Scan the neighbours — look for patterns: do all the domains share similar names, topics, or look like thin-content sites? That's a PBN fingerprint.
- Cross-reference with WHOIS — click the WHOIS button next to any suspicious neighbour to check if they share the same registrant.
- Note Cloudflare IPs — if the ISP is Cloudflare, the neighbours listed are all Cloudflare-protected sites, not real server neighbours. Discount the count accordingly.
Shared Domain Count: Risk Guide
| Shared Domains | Risk Level | Likely Explanation |
|---|---|---|
| 0–1 | ✅ Low | Dedicated server or no data available. Usually a good sign. |
| 2–10 | ✅ Low | Semi-dedicated or small shared hosting. Normal for boutique blogs. |
| 10–50 | 🟡 Moderate | Standard shared hosting. Very common and generally fine. |
| 50–200 | 🟠 Elevated | High-density shared hosting. Worth reviewing neighbour quality. |
| 200+ | 🔴 High | Bulk hosting or possible link network. Investigate carefully. |
| Cloudflare IP | ⚠️ Note | Results show Cloudflare neighbours, not real server neighbours. |
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Everything you need to know about reverse IP lookup