Comparison

Whois Lookup, Domain Availability & IP Search - DomainTools vs ViewDNS.info

Whois Lookup, Domain Availability & IP Search - DomainTools lands on Depends, and ViewDNS.info lands on Worth it.

Whois Lookup, Domain Availability & IP Search - DomainTools

research.domaintools.com

Depends

Confidence: Low

Use the free Whois lookup for occasional domain checks . it works and costs nothing.

Read the full report

ViewDNS.info

Worth it

Confidence: Medium

Buy if you're an engineer or analyst who wants fast, free DNS and IP lookups with no signup.

Read the full report

Whois Lookup, Domain Availability & IP Search - DomainTools versus ViewDNS.info
Compare	Whois Lookup, Domain Availability & IP Search - DomainTools	ViewDNS.info
Verdict	Depends	Worth it
Best for	OSINT and threat-intel investigators	Network engineers doing quick lookups
Who it's not for	Casual users wanting one-off lookups . free registrars and ICANN lookup suffice	Enterprise SOCs needing SLA-backed, monitored threat intel
Privacy	No known public vulnerabilities found in the sources reviewed.^⁵	No known public vulnerabilities found in the sources reviewed.¹³
Support quality	No support evidence found	No evidence of any support offering
Public sentiment	Cited widely as a go-to OSINT and Whois resource, but the sources contain no substantive independent reviews.^⁶	Widely cited as a daily go-to for network engineers, SOC analysts, and incident responders, with millions of users worldwide.
Biggest gotcha	No published pricing found; expect a sales call for paid tiers^²	No paid tier, so no SLA, support, or commercial guarantees . plan accordingly¹¹

Pick Whois Lookup, Domain Availability & IP Search - DomainTools when

OSINT and threat-intel investigators
Security teams tracing domain infrastructure
Buyers vetting domain ownership and availability

When Whois Lookup, Domain Availability & IP Search - DomainTools is not a fit

Casual users wanting one-off lookups . free registrars and ICANN lookup suffice
Teams wanting transparent, self-serve pricing
Anyone expecting a public security page . none found

Pick ViewDNS.info when

Network engineers doing quick lookups
SOC and OSINT analysts investigating domains
IT admins checking DNS propagation
Devs checking WHOIS, records, open ports

When ViewDNS.info is not a fit

Enterprise SOCs needing SLA-backed, monitored threat intel
Buyers needing support contracts or uptime guarantees . none exists
Procurement teams needing security or compliance docs
Teams replacing full DNS/uptime monitoring platforms

Sources

Whois Lookup, Domain Availability & IP Search - DomainToolswhois.domaintools.com
official
Threat Intelligence & Domain Security Platform | DomainToolsdomaintools.com
official
DomainTools WHOIS | DomainTools Technical Documentationdocs.domaintools.com
official
DomainTools Domain Search | DomainTools Technical Documentationdocs.domaintools.com
official
Research DomainTools Security pageresearch.domaintools.com
security
Intellitoolz - A Collection Of OSINT Toolsgithub.com
review
A list of search engines for OSINT investigators and ethical hackersmedium.com
review
Whois Lookup, Domain Availability & IP Search - Hosting Ratedhostingrated.com
review
ViewDNS.info homepageviewdns.info
official
ViewDNS.info security pageviewdns.info
official
Classic DNS Lookup Tool vs Modern Domain Intelligencedomainscan.in
review
ViewDNS Review: Pricing & API Featuresdomscan.net
review
Viewdns.info Review: Safe or Legit? (78/100 Trust Score)gridinsoft.com
security
ViewDNS.info . DNS & OSINT Vendor Profilednsai.com
review
ViewDNS.info domain verification & discoverygetbob.ai
review
ViewDNS (OSINT tool overview)osintux.org
review