Key Takeaway
Reverse IP Lookup extracts structured professional data from any LinkedIn profile URL — including headline, experience, education, skills, and certifications — at 1 credit per run. It is part of SyncGTM's 75+ enrichment library and is available via CLI and MCP.
What is Reverse IP Lookup Action?
Reverse IP Lookup is a network intelligence action that finds all domains hosted on the same IP address as a given company's website. Given a domain, it resolves the IP address and returns a list of all other domains sharing that same server. This action is useful for understanding a company's hosting infrastructure, identifying related properties, and conducting security research.
Reverse IP lookups reveal the hosting footprint of a company and can uncover related domains, subsidiaries, or shared hosting environments. SyncGTM's Reverse IP Lookup action queries DNS and hosting databases to map the complete set of domains on a given IP address. This data is valuable for security teams conducting reconnaissance, sales teams identifying related company properties, and researchers mapping corporate infrastructure.
This action uses waterfall enrichment to query multiple premium data providers in sequence, delivering higher match rates than single-source alternatives. Learn more about how waterfall enrichment works.
How it works
- 1
Provide a domain name as input.
- 2
SyncGTM resolves the domain's IP address via DNS lookup.
- 3
A reverse DNS query identifies all other domains hosted on that IP address.
- 4
The IP address and a list of co-hosted domains are returned.
Use cases
Infrastructure Analysis
Understand a company's hosting setup by seeing what other domains share their IP. Identify whether they use dedicated hosting, shared hosting, or a CDN.
Related Property Discovery
Discover related company domains, microsites, or subsidiary websites that share the same hosting infrastructure.
Security Research
Identify all domains on a server for security audits. If one domain on a shared IP is compromised, others may be at risk.
Input
| Field | Type | Required | Description |
|---|---|---|---|
| domain | string | Yes | The domain to perform a reverse IP lookup on (e.g., acme.com). |
Output
| Field | Type | Description |
|---|---|---|
| domain | string | The queried domain. |
| ip_address | string | The resolved IP address. |
| total_domains | number | Total number of domains on this IP. |
| co_hosted_domains | array | List of other domains hosted on the same IP. |
Related enrichments
Get Domain Details
Get WHOIS and registration details for a company's domain including age and registrar.
Domain Threat Detection
Check if a domain is flagged for malware, phishing, or other security threats.
Company Domain
Resolve a company's primary website domain from a name or LinkedIn URL.
Company Website Traffic
Estimate monthly website visits and traffic trends for a company's domain.
Enrich Organization
Get a full company profile including industry, size, location, and firmographic data from a domain or name.