Domain & DNS Intelligence Tool Categories

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SearchWebCode

Source checked 2026-10-22

Find public homepage source strings and inspect the captured context

Verification: Pending Verification Workflow: Analysis, Discovery, Pivoting Pricing: Paid

Best for: Finding candidate websites that share a public source-code string, then reviewing the captured context before making a technology…

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SearchWebCode

Find public homepage source strings and inspect the captured context

WorkflowAnalysis, Discovery, Pivoting AccessPaid

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PageSourceSearch

Source checked 2026-10-22

Search indexed HTML and first-party JavaScript for exact source clues

Verification: Pending Verification Workflow: Discovery, Pivoting, Verification Pricing: Free

Best for: Finding public website-code similarities and tracking identifiers, then checking whether the source context supports a relationship between sites.

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Page Source Search

Search indexed HTML and first-party JavaScript for exact source clues

WorkflowDiscovery, Pivoting, Verification AccessFree

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digga

Source checked 2026-10-03

Check current domain DNS and registration context

Verification: Pending Verification Workflow: Enrichment, Pivoting Pricing: Free

Best for: Investigators starting from a public domain who need to compare live resolver answers and inspect available registration dates…

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digga

Check current domain DNS and registration context

WorkflowEnrichment, Pivoting AccessFree

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Silent Push

Source checked 2026-09-19

Infrastructure intelligence for connected domain and host leads

Verification: Pending Verification Workflow: Discovery, Pivoting, Verification Pricing: Freemium

Best for: Investigating a suspicious web footprint through DNS, certificate and content-related observations.

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Silent Push

Infrastructure intelligence for connected domain and host leads

WorkflowDiscovery, Pivoting, Verification AccessFreemium

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Validin

Source checked 2026-09-19

Explore historical domain and internet infrastructure observations

Verification: Pending Verification Workflow: Discovery, Pivoting, Verification Pricing: Freemium

Best for: Comparing DNS, certificates and host-related context across an investigation timeline.

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Validin

Explore historical domain and internet infrastructure observations

WorkflowDiscovery, Pivoting, Verification AccessFreemium

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Subfinder

Source checked 2026-09-19

Discover subdomains from passive sources

Verification: Pending Verification Workflow: Discovery, Pivoting, Verification Pricing: Free

Best for: Generating an initial domain inventory before validation and historical research.

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Subfinder

Discover subdomains from passive sources

WorkflowDiscovery, Pivoting, Verification AccessFree

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dnstwist

Source checked 2026-09-19

Find lookalike domains for brand and phishing triage

Verification: Pending Verification Workflow: Discovery, Pivoting, Verification Pricing: Free

Best for: Checking suspicious typo, homoglyph and naming variants around an authorized brand or domain.

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dnstwist

Find lookalike domains for brand and phishing triage

WorkflowDiscovery, Pivoting, Verification AccessFree

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Osintly SAS

Source checked 2026-09-19

Multi-module OSINT search and investigation workspace

Verification: Pending Verification Workflow: Discovery, Enrichment, Pivoting Pricing: Freemium

Best for: Broad first-pass research across usernames, emails, phone numbers, domains, IP addresses, companies, and cryptocurrency identifiers in one workspace.

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Osintly

Multi-module OSINT search and investigation workspace

WorkflowDiscovery, Enrichment, Pivoting AccessFreemium

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FullHunt

Source checked 2026-05-26

Attack-surface discovery and domain intelligence platform

Verification: Pending Verification Workflow: Discovery, Enrichment Pricing: Freemium

Best for: Expanding a scoped domain or organization into public assets, technologies, services, and exposure clues before validation.

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FullHunt

Attack-surface discovery and domain intelligence platform

WorkflowDiscovery, Enrichment AccessFreemium

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Pulsedive

Source checked 2026-05-26

Community threat-intelligence search and indicator enrichment

Verification: Pending Verification Workflow: Triage, Verification Pricing: Freemium

Best for: Enriching domains, IPs, URLs, and indicators with reputation, community threat-intelligence context, and linked observables during triage.

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Pulsedive

Community threat-intelligence search and indicator enrichment

WorkflowTriage, Verification AccessFreemium

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ViewDNS.info

Source checked 2026-05-07

Free web-based DNS and domain lookup tools

Verification: Verification status not listed Workflow: Discovery, Enrichment Pricing: Freemium

Best for: Use it when a domain investigation needs quick manual pivots across several lightweight DNS and hosting checks.

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ViewDNS.info

Free web-based DNS and domain lookup tools

WorkflowDiscovery, Enrichment AccessFreemium

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DNSlytics

Source checked 2026-05-07

Reverse analytics, DNS, and domain intelligence

Verification: Verification status not listed Workflow: Enrichment, Pivoting Pricing: Freemium

Best for: Use it when a website or domain needs passive pivots through analytics IDs, ad IDs, DNS clues, or…

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DNSlytics

Reverse analytics, DNS, and domain intelligence

WorkflowEnrichment, Pivoting AccessFreemium

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DNSDumpster

Source checked 2026-05-07

Passive DNS and subdomain reconnaissance

Verification: Verification status not listed Workflow: Discovery, Pivoting Pricing: Freemium

Best for: Use it when a domain is already in scope and the next job is quick passive mapping before…

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DNSDumpster

Passive DNS and subdomain reconnaissance

WorkflowDiscovery, Pivoting AccessFreemium

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MXToolbox

Source checked 2026-05-07

DNS, email, and blacklist diagnostics

Verification: Verification status not listed Workflow: Enrichment, Verification Pricing: Freemium

Best for: Use it when a domain or mail server needs quick deliverability, DNS, or blacklist context before deeper infrastructure…

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MXToolbox

DNS, email, and blacklist diagnostics

WorkflowEnrichment, Verification AccessFreemium

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WhoisXML API

Source checked 2026-05-07

Domain, DNS, WHOIS, and threat intelligence APIs

Verification: Verification status not listed Workflow: Enrichment, Pivoting Pricing: Freemium

Best for: Use it when domain research needs structured enrichment at scale rather than one manual lookup at a time.

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WhoisXML API

Domain, DNS, WHOIS, and threat intelligence APIs

WorkflowEnrichment, Pivoting AccessFreemium

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laramies

Source checked 2026-05-06

Open-source passive reconnaissance for domains, subdomains, hosts, and emails

Verification: Pending Verification Workflow: Discovery, Enrichment Pricing: Free

Best for: Collecting first-pass public leads around an organization's domains, hosts, and exposed contact patterns.

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theHarvester

Open-source passive reconnaissance for domains, subdomains, hosts, and emails

WorkflowDiscovery, Enrichment AccessFree

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DomainTools

Source checked 2026-05-06

Commercial domain intelligence for WHOIS history and DNS pivots

Verification: Pending Verification Workflow: Enrichment, Pivoting Pricing: Freemium, Paid

Best for: Investigating domains, ownership history, DNS relationships, and infrastructure context around suspicious or important web properties.

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DomainTools

Commercial domain intelligence for WHOIS history and DNS pivots

WorkflowEnrichment, Pivoting AccessFreemium, Paid

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Microsoft / RiskIQ

Source checked 2026-09-26

Legacy PassiveTotal reference; successor intelligence in Defender

Verification: Verification status not listed Workflow: Pivoting Pricing: Enterprise

Best for: Interpreting historical RiskIQ PassiveTotal evidence and identifying the current Microsoft documentation for a replacement workflow.

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RiskIQ PassiveTotal

Legacy PassiveTotal reference; successor intelligence in Defender

WorkflowPivoting AccessEnterprise

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