Security Services

Public DNS 

A free DNS resolution service that respects your privacy

Verisign Public DNS is now part of Neustar UltraDNS Public

As of Dec. 3, 2020 the IP blocks (,, 2620:74:1b::1:1, 2620:74:1c::2:2), formerly used by the Verisign Public DNS service, have been transferred to Neustar’s recursive service, Neustar UltraDNS Public. This address space is now mapped to the Unfiltered Resolution service level of Neustar UltraDNS Public.

Users of Verisign Public DNS are not required to make any DNS configuration changes to existing IPs, and are encouraged to learn more at

For more information on the transition of Verisign Public DNS to Neustar, please click here.

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The Domain Name System (DNS) is a central part of the internet, providing a way to translate a domain name for a website you’re seeking into a numeric internet protocol (IP) address. Anything connected to the internet - laptops, tablets, mobile phones, websites, etc. - relies on DNS to accurately associate domain names with their corresponding IP addresses. To get the most out of your online interactions, should you not choose a trusted provider that has unmatched DNS experience? Enter Verisign Public DNS.

Verisign Public DNS is a free DNS service that offers improved DNS stability and security over other alternatives. And, unlike many of the other DNS services out there, Verisign respects your privacy. We will not sell your public DNS data to third parties nor redirect your queries to serve you any ads.

Why Verisign Public DNS?


Confidence in a highly reliable public DNS platform


Robust protection from security flaws


Assurance that your public DNS data will not be sold to third parties

How Public DNS Works

User enters a URL

User enters the URL into a web browser.

Verisign Public DNS Resolver

The domain is sent to a recursive DNS resolver.

Root Server

Recursive resolver starts with the root server to find where to go to get the location for the requested top level domain name.

TLD Name Server

Recursive resolver checks with the Top Level Domain (TLD) Name Server to find where to go to get the location for the authoritative server for that domain.

Authoritative Server

This server knows the exact location for the full domain name and returns the answer to the recursive resolver (IP Address

Resolution Complete

The recursive DNS resolver returns the actual location of to the user.

The user’s web browser loads the page from located at

User enters a Domain
Verisign Public DNS Resolver
Root Servers
Domain Name Servers
Authoritative Servers
Resolution Complete