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.
What Netlas is known for
Netlas is widely known as a newer internet-intelligence and attack-surface platform.
Why Profundis
Favicon perceptual-similarity search (MMH3 + visual similarity) that finds visually similar favicons, not just exact icon-hash matches - Profundis’s signature differentiator.
A 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.
A 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).
An official MCP (Model Context Protocol) server, so AI agents like Claude can call Profundis search as native tools - AI-agent-native distribution.
EU-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
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.
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.
Yes. The Registrant Explorer performs reverse-WHOIS to find domains tied to an organization and then cross-references hosts and DNS for corporate recon.
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.
Yes. Profundis provides an API and an official MCP server, so AI agents like Claude can call its search as native tools.
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