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ASM Domain & Subdomain Data

ASM Domain & Subdomain Data

Structured, historical domain intelligence for Attack Surface Management providers

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This page is for Attack Surface Management (ASM/AVM) vendors and security platforms that:

Build or operate continuous external asset discovery

Serve large enterprises with complex, global infrastructures

Rely on domain and subdomain data as a core input

If your product accuracy depends on knowing what exists, what existed before, and what just appeared, this data is built for you.

ASM platforms fail quietly when input data is incomplete.

Common issues we see across the market:

  • Missing subdomains, especially deep or rarely used one
  • Poor coverage outside major TLDs and regions
  • No reliable historical baseline for validati
  • High noise from unstructured or scraped sources
  • Blind trust in self-scanning without independent verification

For enterprise customers, these gaps translate directly into unmanaged exposure.

What makes DomainCrawler different

DomainCrawler is not a scanner and not an ASM tool.

We are a domain data provider focused on one thing:

Complete, continuous visibility of domains and subdomains at global scale.

Our differentiation is structural, not cosmetic.

1. Subdomain coverage as a primary focus

  • Systematic discovery of subdomains across the global namespace
  • Strong coverage of long-tail, regional, and low-traffic assets
  • Designed to complement, not replace, proprietary scanning

2. History by default, not as an add-on

  • Domain and DNS data collected and retained since 2008
  • Historical subdomain presence, not just current state
  • Enables trend analysis and asset lifecycle tracking

3. Structured data, ready for platforms

  • Normalized datasets, not raw crawl output
  • Clear schemas suitable for automation and enrichment
  • Built for ingestion into production ASM pipelines

4. Independent visibility

  • Data source independent from customer environments
  • Used as a validation layer for self-reported scopes and scans
  • Reduces over-reliance on internal discovery alone

What data ASM platforms get

DomainCrawler delivers domain intelligence with subdomain coverage, enriched with context ASM teams actually use.

Core coverage

  • Domains and subdomains (current and historical)
  • Newly observed and reactivated assets
  • DNS records: A, AAAA, CNAME, CAA, MX, TXT, NS

Infrastructure context

  • IP mappings (IPv4 and IPv6)
  • ASN and hosting attribution
  • Redirect chains and external dependencies

Lifecycle and state signals

  • First seen / last seen timestamps
  • DNS and hosting changes over time
  • Parked, redirected, inactive, and developed states

This allows ASM platforms to distinguish between:

  • Active vs legacy assets
  • Stable infrastructure vs ephemeral exposure
  • Noise vs inventory that matters

How ASM providers use our data

DomainCrawler data is typically used as:

Discovery layer – expand asset inventories beyond scanning

Validation layer – verify customer-provided scopes

Historical reference – understand how attack surfaces evolved

Coverage benchmark – measure what scanners may miss

You retain ownership of scoring, prioritization, and remediation.
We provide the visibility that makes those steps reliable.

Built for enterprise ASM use cases

ASM vendors serving large organizations require:

  • Predictable data structures
  • Global coverage
  • Long-term continuity
  • Clear data provenance

DomainCrawler is designed as a foundational dataset, not a point feature.

We support:

High-volume API access

Integration into existing data pipelines

Long-term partnerships with security vendors

Why ASM teams choose DomainCrawler

  • Coverage depth beyond common DNS and CT sources
  • Historical visibility that scanners cannot recreate
  • Independent data to reduce blind spots
  • A provider role that does not compete with your product

Visibility is the foundation of protection.

DomainCrawler supplies the domain and subdomain intelligence ASM platforms depend on.

Next steps

If you are evaluating data suppliers for an ASM or AVM platform, we support:

  • Coverage comparisons
  • Technical validation
  • Integration discussions

DomainCrawler is a structured, trusted domain intelligence for Attack Surface Management providers.