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F5 BIG-IP DNS vs Neustar UltraDNS Firewall [EOL] 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

F5 BIG-IP DNS
Average Rating
8.6
Reviews Sentiment
8.0
Number of Reviews
21
Ranking in other categories
Domain Name System (DNS) Security (6th)
Neustar UltraDNS Firewall [...
Average Rating
0.0
Number of Reviews
0
Ranking in other categories
No ranking in other categories
 

Featured Reviews

reviewer2733993 - PeerSpot reviewer
Solutions Architect at a tech services company with 51-200 employees
Ensures reliable web application security and offers comprehensive load balancing solutions
When it comes to denial of service or DNS security, F5 is not the best vendor as dedicated vendors such as Arbor for denial of service and Infoblox for DNS security offer more comprehensive solutions. The main features such as WAF and load balancing do not generate complaints. F5 BIG-IP DNS is not the best for DNS denial of service because they handle it as part of BIG-IP features, mainly used for GSLB, while other vendors provide complete DDI solutions, including DHCP, DNS, and IP address management, along with specialized DNS security, offering much more than just GSLB and basic recursive DNS security. The two main concerns are DNS related and denial of service, areas where F5 BIG-IP DNS could improve, and they could do better as they are not the best vendor, indicating ample room for improvement especially since those are not their main specialties.
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Top Industries

By visitors reading reviews
Financial Services Firm
15%
Manufacturing Company
12%
Computer Software Company
11%
Retailer
7%
No data available
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business8
Midsize Enterprise4
Large Enterprise9
No data available
 

Questions from the Community

What do you like most about F5 BIG-IP DNS?
For one of our clients, F5 improved global server load balancing with an active-active site configuration for Disaster Recovery.
What is your experience regarding pricing and costs for F5 BIG-IP DNS?
In terms of pricing, F5 BIG-IP is not cheaper compared to other solutions like Fortinet or Citrix. The cost can be high due to its comprehensive modules.
What needs improvement with F5 BIG-IP DNS?
When it comes to denial of service or DNS security, F5 is not the best vendor as dedicated vendors such as Arbor for denial of service and Infoblox for DNS security offer more comprehensive solutio...
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Also Known As

F5 BIG-IP DNS, F5 DNS Delivery
No data available
 

Overview

 

Sample Customers

Ricacorp Properties, Bangladesh Post Office, Shawbrook Bank, Shinsegae Internet Duty Free
Google, TESCO, Permanent TSB, Ticketmaster, Pinterest
Find out what your peers are saying about Cisco, Infoblox, Palo Alto Networks and others in Domain Name System (DNS) Security. Updated: January 2026.
879,455 professionals have used our research since 2012.