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Head-to-head · OSINT Tools

Censys Attack Surface Management vs ViewDNS.info

  • Updated Oct 2026
  • Both researched from official sources
  • 2 checks side by side
Higher score Censys Attack Surface Management #4 in OSINT Tools 8.2/10 Pricing on request ✓ 1 of 6 features Visit Censys
ViewDNS.info #5 in OSINT Tools 7.8/10 Free plan Free plan✓ 0 of 6 features Visit ViewDNS.info

Censys Attack Surface Management leads on 0 checks, ViewDNS.info on 0, and 2 are even. Who comes out ahead on the 2 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreCensys Attack Surface Management · 8.2/10
  • Free planonly ViewDNS.info
  • Most featuresCensys Attack Surface Management · 1 of 6

Censys Attack Surface Management scores higher on our rubric for osint tools: 8.2 against 7.8 out of 10; our editors rank them #4 and #5.

Censys Attack Surface Management is the better fit for continuous external attack-surface investigations. ViewDNS.info is the better fit for affordable domain and IP lookups.

  • Censys Attack Surface Management fits best

    Continuous external attack-surface investigations

  • ViewDNS.info fits best

    Affordable domain and IP lookups

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Side by side

Feature Censys Attack Surface Management 8.2/10 Visit ↗ ViewDNS.info 7.8/10 Visit ↗
At a glance
Editor score 8.2 7.8
Ranking #4 in OSINT Tools #5 in OSINT Tools
Best for Continuous external attack-surface investigations Affordable domain and IP lookups
Pricing model Paid Free plan + paid
Starting price Pricing on request —
Free plan Not checked yet ✓ (best)
Free trial — —
Deployment Cloud Cloud, Browser extension
Platforms Web Web
Support Email, Docs Email, Docs
Built for Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features Censys Attack Surface Management 1/6 · ViewDNS.info 0/6
Social source search Not checked yet Not checked yet
Domain & IP lookup Not checked yet Not checked yet
Monitoring & alerts Not checked yet Not checked yet
Link analysis Not checked yet Not checked yet
API access ✓ (best) Not checked yet
Data export Not checked yet Not checked yet
Our review
Pros
  • Continuously monitors internet-facing assets for exposure changes.
  • Connects AWS, Google Cloud, and Azure resources to asset visibility.
  • Maps asset relationships and supports remediation through security integrations.
  • Covers WHOIS, RDAP, DNS, reverse lookups and historical IP checks
  • Sandbox offers 250 trial queries and access to most APIs
  • CSV, JSON and XML outputs support manual and programmatic workflows
Cons
  • Sales-led pricing makes costs harder to compare upfront.
  • Its security focus is less suited to general OSINT research.
  • Cloud deployment and email or documentation support may not fit every workflow.
  • Entry paid tier is limited to 1,000 monthly queries
  • Sandbox access covers most, not all, APIs
  • Focused on lookups rather than a broad investigation workflow
Our verdict

Censys Attack Surface Management discovers and monitors an organization’s internet-facing assets, including hosts, domains, certificates, services, and cloud resources. External scanning and attribution help build an inventory, identify…

Read the review →

ViewDNS.info brings browser-based domain and IP checks together with an API for programmatic queries. Its tools include WHOIS for domains and IP addresses, registry-selected WHOIS or RDAP sources, reverse WHOIS by registrant name or email,…

Read the review →
  1. Censys Attack Surface ManagementOSINT Tools 8.2Pricing on request
  2. ViewDNS.infoOSINT Tools 7.8Free plan

Strengths and trade-offs

  • Censys Attack Surface Management — where it wins

    • Continuously monitors internet-facing assets for exposure changes.
    • Connects AWS, Google Cloud, and Azure resources to asset visibility.
    • Maps asset relationships and supports remediation through security integrations.

    Where it doesn't

    • Sales-led pricing makes costs harder to compare upfront.
    • Its security focus is less suited to general OSINT research.
    • Cloud deployment and email or documentation support may not fit every workflow.

  • ViewDNS.info — where it wins

    • Covers WHOIS, RDAP, DNS, reverse lookups and historical IP checks
    • Sandbox offers 250 trial queries and access to most APIs
    • CSV, JSON and XML outputs support manual and programmatic workflows

    Where it doesn't

    • Entry paid tier is limited to 1,000 monthly queries
    • Sandbox access covers most, not all, APIs
    • Focused on lookups rather than a broad investigation workflow
  • Censys Attack Surface Management8.2/10 · Pricing on request

    Continuous asset discovery and exposure monitoring for security-focused teams.

    Visit CensysFull verdict →
  • ViewDNS.info7.8/10 · Free plan

    A focused lookup service for domain and IP research, with browser tools and a query-based API.

    Visit ViewDNS.infoFull verdict →

More comparisons

All OSINT tools comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update