No more typing reviews! Try our Samantha, our new voice AI agent.

Neustar UltraDNS [EOL] vs Quad9 comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Nov 2, 2025

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

Neustar UltraDNS [EOL]
Average Rating
0.0
Number of Reviews
0
Ranking in other categories
No ranking in other categories
Quad9
Average Rating
6.0
Reviews Sentiment
7.9
Number of Reviews
2
Ranking in other categories
Internet Security (7th), Managed DNS (4th)
 

Featured Reviews

Use Neustar UltraDNS [EOL]?
Leave a review
Benoit Tellier - PeerSpot reviewer
IT Telehealth Specialist at Clinical & Support Options
No maintenance required, free service, but more free features would help
We were using Quad9 to prevent our users from accidentally landing on suspicious websites There's no reporting, but we're hoping that our users have been able to avoid malicious websites. The most valuable feature of Quad9 is that it is a free solution. Quad9 could improve by having any…
report
Use our free recommendation engine to learn which Managed DNS solutions are best for your needs.
896,692 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
Financial Services Firm
22%
Computer Software Company
14%
Transportation Company
7%
Construction Company
7%
Comms Service Provider
25%
Computer Software Company
9%
Hospitality Company
6%
University
5%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
No data available
 

Questions from the Community

Ask a question
Earn 20 points
Which would you choose - Cloudflare DNS or Quad9?
Cloudflare DNS is a very fast, very reliable public DNS resolver. It is an enterprise-grade authoritative DNS service that offers great redundancy and advanced security with built-in unmetered and ...
 

Comparisons

 

Also Known As

UltraDNS
No data available
 

Overview

 

Sample Customers

Silverstring
CISCO, Netlab, proofpoint
Find out what your peers are saying about Cloudflare, Amazon Web Services (AWS), BlueCat and others in Managed DNS. Updated: May 2026.
896,692 professionals have used our research since 2012.