Reverse IP Domain Checker

Free Reverse IP Domain Checker

A reverse IP lookup identifies all domain names hosted on the same server or IP address as a given domain. While most websites on shared hosting share an IP with dozens or hundreds of other sites, knowing your IP neighbors is useful for competitive research, security audits, and verifying hosting configurations.

Enter any domain or IP address to see which other domains are co-hosted on the same server. The tool queries reverse DNS records and returns a list of all domains found at that IP.

Reverse IP data is commonly used by security researchers to identify malicious hosting infrastructure, by SEO analysts to study competitor hosting arrangements, and by webmasters to verify they have been assigned a dedicated IP address.

Common Uses for Reverse IP Lookup

Competitor research. See which other sites your competitors host on the same server. Useful for identifying sister sites and related properties.

Verify dedicated IP. If your hosting plan includes a dedicated IP, use reverse IP lookup to confirm that only your domain resolves to that address.

Security auditing. Identify all domains on a server for network security analysis and to detect unauthorized domain additions on your hosting account.

Bad neighborhood detection. Check whether your IP neighbors include spam, malware, or adult sites that could affect email deliverability or blacklist status.

Related Tools

• WHOIS Lookup – View domain registration and ownership details.
• DNS Lookup – Check DNS records for any domain.
• Blacklist Lookup – Check if a domain or IP is on spam blacklists.
• Domain Age Checker – See how old a domain is.

Frequently Asked Questions