Reverse IP Lookup: Find All Domains

Discover every website hosted on a single server. Use our Reverse IP tool to find shared hosting neighbors and check PTR records instantly.

AI Overview

Reverse IP Lookup takes an IP address and lists all domains pointing to it. Unlike regular DNS which finds an IP for a domain, this tool reveals server neighbors. It is a key tool for SEO audits, security research, and verifying email server (PTR) setup.

What is Reverse IP Lookup?

A Reverse IP Lookup allows you to see all the websites sharing the same server. While a normal DNS search converts a domain into an IP, this tool does the opposite. It is highly effective for identifying shared hosting neighbors and performing competitive research.

Pro Tip: Use this tool to check your own website. If you find "spammy" sites sharing your IP, your email deliverability and SEO could be at risk.

Why You Need a PTR Record Check

A PTR (Pointer) record is essential for email security. Mail servers use it to verify that an incoming email is from a legitimate source. If your IP address lacks a valid PTR record, major providers like Gmail or Outlook may mark your emails as spam.

Core Benefits of This Tool

  • SEO Analysis: Discover hidden networks or PBNs owned by competitors.
  • Security Audits: Identify vulnerabilities on shared servers.
  • Email Setup: Ensure your mail server passes reverse DNS checks.
  • Hosting Quality: See how many other sites are "crowding" your server resources.

Frequently Asked Questions

Is Reverse IP Lookup Legal?
Yes. This information is part of the public DNS system. Anyone can query it to see server assignments.

Why is my site showing no PTR record?
Hosting providers often don't set these up by default. You may need to contact your host to configure a Reverse DNS (PTR) record for your server IP.

Does sharing an IP hurt SEO?
Usually no, but if your "neighbor" sites are malicious or blacklisted, it can lead to IP-wide penalties or server-side lag.