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Free Domain, DNS, WHOIS and IP Tools

Registered Users: 70,937


  • Authoritative DNS Monitoring
  • Records History of DNS Changes
  • Real-time Alerts via Email
  • Monitors NS, SOA, A, MX, AAAA, CNAME, SPF, SRV TXT, and LOC Records
  • Completely FREE

DNS Tools

DNS Tools provide real-time insight to how your domain's DNS configuration is available and performing on the public Internet.

  • DNS Hosting & Root Server Speed
  • DNS Lookup & Traversal
  • DNS Query Estimator
  • Zone File Dump
  • Completely FREE

Neustar UltraDNS

It all starts here.

The world's leading DNS service, now just

TLS 1.1 Support Ends October 15th
The oldest browser versions UltraTools will support after October 15, 2019 are: Chrome v30, Firefox v27,Internet Explorer v11, and Safari v7.

UltraTools is the most comprehensive set of domain, DNS, Email, WHOIS and IP tools brought to you by UltraDNS, the industry leader in DNS management.
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"My whole team is using UltraTools on a daily basis now. Getting an expense approval for an external tool that can't be quantified has always been tough, but having this free tool available has solved that. This tool is too good to be free!" - Dale Lovelace, Senior Systems Administrator, Expedia, Inc.