Reverse IP Lookup

A technique that identifies the company associated with an IP address visiting your website.

Definition

Reverse IP lookup is a method of identifying website visitors by matching their IP address to a company. When someone visits your website, their IP address is captured, and this is matched against databases that map IP ranges to company names. This reveals which companies are visiting your site, though not the specific individuals.

Why It Matters

Reverse IP lookup was one of the first website visitor identification technologies. It provides valuable account-level intelligence, showing you which companies are interested in your solution. However, it has limitations—especially with remote work where employees use home IPs.

Examples

Seeing that 'Acme Corp' visited your pricing page
Knowing which companies from a target account list are on your site
Identifying enterprise accounts browsing your website

How Bullseye Helps

Bullseye goes beyond reverse IP lookup by providing person-level identification. While we can tell you which company is visiting, we also reveal the specific individual—their name, email, and job title—giving you direct actionability.

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