Reverse IP Lookup: Find Domains on the Same Server

Reverse IP lookup (also called domains-on-IP or shared hosting discovery) answers: “Which hostnames resolve to this address?” It is the inverse of Domain to IP.

On PINIP, use Domains on IP (same engine as Server IP Lookup) to inspect hosting IPs and list co-hosted websites when data is available.

• Shared hosting: Many customer sites share one public IP — reverse IP is most useful here.
• Dedicated / cloud VM: Often a single primary site; the list may be empty or tiny.
• CDN / anycast: Huge, noisy neighbor sets that do not imply related ownership.

Reverse IP is a reconnaissance aid for admins, researchers, and SEO analysts. It is not a guarantee of ownership, malware status, or physical co-location. Always pair it with ASN, rDNS, and the full IP Lookup context.