The Netlas alternative for favicon similarity and OSINT depth
Unified host, DNS, WHOIS and certificate search - with perceptual favicon similarity, reverse-WHOIS registrant intelligence, a full tools suite and an MCP server.
Profundis is a unified internet-intelligence search engine. Like Netlas, it provides internet-wide attack-surface data across hosts, DNS, WHOIS and TLS certificates with a field:value query syntax.
Profundis differentiates on perceptual favicon similarity, a full OSINT tools suite (typosquatting, subdomains, analytics-ID, portfolio analysis, entity graph) and reverse-WHOIS registrant intelligence - plus an official MCP server so AI agents can search natively.
Why Profundis
01Favicon perceptual-similarity search (MMH3 + visual similarity) that finds visually similar favicons, not just exact icon-hash matches - Profundis’s signature differentiator.
02A full OSINT tools suite: typosquatting scanner, subdomain enumeration, registrant explorer (reverse-WHOIS corporate recon), analytics-ID lookup, domain portfolio analyzer, entity-intelligence flow graph, ASN details and reverse-IP.
03A unified internet-intelligence engine - exposed hosts and services, DNS (live + historical/passive), WHOIS (with reverse/registrant lookups), TLS certificates and virtual hosts - all searchable in one place with a field:value syntax (wildcards, AND/OR/NOT).
04An official MCP (Model Context Protocol) server, so AI agents like Claude can call Profundis search as native tools - AI-agent-native distribution.
05EU-based operation (Perspective Analytics SAS, France) for a data-residency / GDPR-friendly posture.
Profundis vs Netlas
| Capability | Profundis | Netlas |
|---|---|---|
| Internet-wide host & service data | ✓ Core feature | Core feature |
| Unified DNS (live + historical/passive) | ✓ Built in | Supported |
| WHOIS + reverse/registrant lookups | ✓ Built in | Varies by plan |
| TLS certificate search | ✓ Built in | Supported |
| Field:value query syntax (wildcards, AND/OR/NOT) | ✓ Across all datasets | Supported |
| Favicon perceptual similarity | ✓ Visual similarity | - |
| OSINT tools suite (typosquat, subdomains, registrant…) | ✓ Included | Varies by plan |
| Reverse-WHOIS registrant intelligence | ✓ Registrant Explorer | Varies by plan |
| Official MCP server for AI agents | ✓ Native tools | - |
| Free tier with no-signup host/DNS preview | ✓ No signup to preview | Varies by plan |
“✓” marks a Profundis capability. “-” means the capability is not a documented public feature of Netlas at the time of writing - not a definitive statement about its roadmap. Based on publicly available information.
Frequently asked questions
Is Profundis a free Netlas alternative?
Profundis offers a free tier and an anonymous host/DNS preview with no signup. Higher quotas, the OSINT tools suite and the API are available on transparent credit-based plans.
How does Profundis compare to Netlas for attack-surface research?
Both unify internet-wide datasets for attack-surface research. Profundis differentiates on perceptual favicon similarity, a broad OSINT tools suite and reverse-WHOIS registrant intelligence, all queryable with one field:value syntax.
Does Profundis do reverse WHOIS / registrant search?
Yes. The Registrant Explorer performs reverse-WHOIS to find domains tied to an organization and then cross-references hosts and DNS for corporate recon.
What makes Profundis favicon search different?
Profundis uses perceptual similarity (MMH3 + visual similarity) rather than only exact icon-hash matching, so it surfaces visually similar favicons to help track related and lookalike infrastructure.
Does Profundis have an API and an MCP server?
Yes. Profundis provides an API and an official MCP server, so AI agents like Claude can call its search as native tools.
Compare with other tools
Comparison based on publicly available information. All trademarks are the property of their respective owners. Profundis is not affiliated with Netlas.