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F5 BIG-IP DNS vs IBM NS1 Connect comparison

 

Comparison Buyer's Guide

Executive Summary

Review summaries and opinions

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

ROI

Sentiment score
8.6
F5 BIG-IP DNS provides significant ROI by reducing downtime, increasing availability, and enhancing performance, improving user experience and trust.
Sentiment score
5.4
IBM NS1 Connect automates DNS, optimizing performance and reducing costs, benefiting application uptime and enhancing user experience.
F5 BIG-IP DNS provides a strong return on investment by minimizing downtime, improving application availability, preventing outages, and ensuring reliable service.
Associate Consultant at HCLSoftware
I have definitely seen a return on investment with IBM NS1 Connect as it has given our organization more control and flexibility in managing DNS at a global scale, which almost was impossible before.
Senior Software Engineer at PwC
I have seen a return on investment with IBM NS1 Connect, as application uptime has improved by 40% to 45%.
Software Engineer at Abbott
 

Customer Service

Sentiment score
7.5
F5 BIG-IP DNS delivers strong customer support and technical expertise, though response speed and cloud challenges may affect satisfaction.
Sentiment score
8.3
IBM NS1 Connect is praised for responsive, professional support, proactive assistance, efficient issue resolution, and excellent communication.
Regarding technical support from the vendor, I would rate it as good, even above average.
Solutions Architect at Mideast Communication Systems-MCS
They are very proactive and supportive, available 24/7.
Software Engineer at Abbott
The customer support for IBM NS1 Connect is very proactive and responsive twenty-four hours a day, seven days a week.
Senior Software Engineer at PwC
You raise a PR, and then it takes several weeks for them to respond.
Assosiate Director at TIAA
 

Scalability Issues

Sentiment score
9.1
F5 BIG-IP DNS is praised for scalability and managing vast DNS traffic across various infrastructures, including government use.
Sentiment score
6.5
IBM NS1 Connect provides scalable, flexible, and automated solutions for efficient traffic management and reliability across global infrastructures.
The core idea of F5 BIG-IP DNS is scalability, enabling organizations to handle massive DNS traffic and distribute application requests across multiple infrastructures.
Associate Consultant at HCLSoftware
I find it easy to scale F5 BIG-IP DNS as you can cluster them, so there are no limitations.
Solutions Architect at Mideast Communication Systems-MCS
It has managed to handle all my organization's growth.
Software Engineer at Abbott
When the number of users increases, it can distribute traffic automatically across multiple servers, clouds, or regions.
Especialista De Produtos at a tech vendor with 10,001+ employees
 

Stability Issues

Sentiment score
9.0
F5 BIG-IP DNS is renowned for its stability and reliability, outperforming competitors with no crashes or performance issues.
Sentiment score
8.3
IBM NS1 Connect is highly reliable, offering 99.99% uptime, seamless scalability, and strong resilience against DDoS attacks.
I consider the performance and stability of F5 BIG-IP DNS to be very stable unless there is incorrect sizing.
Solutions Architect at Mideast Communication Systems-MCS
IBM NS1 Connect is very stable as I have not experienced any lagging or downtime.
Senior Software Engineer at PwC
IBM NS1 Connect is very stable.
Software Engineer at Abbott
 

Room For Improvement

F5 BIG-IP DNS requires interface, pricing, and documentation enhancements, better security, improved integration, and faster support response.
IBM NS1 Connect can enhance navigation, API handling, DNS management, reporting, testing, CI/CD automation, and educational resources.
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.
Solutions Architect at Mideast Communication Systems-MCS
The user interface could be more modern and simplified.
Associate Consultant at HCLSoftware
Pricing can be more transparent, especially when dealing with tight budgets.
Senior Software Engineer at PwC
DNS timeout issues should be resolved.
Software Engineer at Abbott
I think the support for upcoming technical updates in IBM NS1 Connect could be improved as they are not up to the mark, and their development or new enhancements are very slow.
Data Protection Specialist at CompuCom
 

Setup Cost

F5 BIG-IP DNS offers valuable features but is costly, requiring either perpetual or subscription licenses, with mixed user reviews.
IBM NS1 Connect offers cost-effective, reliable DNS solutions with modular pricing, balancing functionality and transparency despite some transparency challenges.
My experience with pricing, setup cost, and licensing was good.
Associate Consultant at HCLSoftware
Other competitors have offered a very low price compared to IBM, and that aspect is very tough for us to convince clients.
Data Protection Specialist at CompuCom
My experience with pricing, setup cost, and licensing of IBM NS1 Connect has been that it is one of the most cost-effective tools and very affordable.
Software Engineer at Abbott
My experience with pricing, setup costs, and licensing has been that I found it a bit expensive and had some difficulty with the language issue, having to use a translator for licensing.
Especialista De Produtos at a tech vendor with 10,001+ employees
 

Valuable Features

F5 BIG-IP DNS provides security, scalability, and performance enhancements with features like GTM, GSLB, DNS monitoring, and easy integration.
IBM NS1 Connect offers API-driven DNS automation, real-time monitoring, geofencing, and robust security features for enhanced performance and efficiency.
The best feature of F5 BIG-IP DNS is global server load balancing. It intelligently directs user DNS requests to the most optimal data center based on server health and geographical location, and it enhances performance.
Associate Consultant at HCLSoftware
The intelligence criterion directs the user to the best server based on latency and availability with 100% SLA for DNS resolution, and the API makes automation easier and reduces manual errors, plus it detects failures and redirects users.
Especialista De Produtos at a tech vendor with 10,001+ employees
The best features that IBM NS1 Connect offers include routing based on user verification, endpoint switching based on latency, DNS response time, real-time monitoring, intelligent traffic routing capabilities, API-driven functionality, HTTPS redirects, secondary DNS, and API integrations.
Senior Software Engineer at PwC
The intelligent traffic routing and API-driven features of IBM NS1 Connect have helped my team by allowing routing based on user location, endpoint switching based on latency, and DNS response time.
Software Engineer at Abbott
 

Categories and Ranking

F5 BIG-IP DNS
Ranking in Domain Name System (DNS) Security
7th
Average Rating
8.6
Reviews Sentiment
8.0
Number of Reviews
22
Ranking in other categories
No ranking in other categories
IBM NS1 Connect
Ranking in Domain Name System (DNS) Security
8th
Average Rating
9.2
Reviews Sentiment
7.4
Number of Reviews
17
Ranking in other categories
Managed DNS (6th)
 

Mindshare comparison

As of August 2026, in the Domain Name System (DNS) Security category, the mindshare of F5 BIG-IP DNS is 3.5%, down from 4.9% compared to the previous year. The mindshare of IBM NS1 Connect is 2.2%, up from 2.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Domain Name System (DNS) Security Mindshare Distribution
ProductMindshare (%)
F5 BIG-IP DNS3.5%
IBM NS1 Connect2.2%
Other94.3%
Domain Name System (DNS) Security
 

Featured Reviews

RR
Associate Consultant at HCLSoftware
Global load balancing has ensured continuous availability and optimized user response times
While F5 BIG-IP DNS is a very powerful solution, some improvements could enhance the overall experience. For example, the user interface could be more modern and simplified. The reporting and analytics features can be improved. Simplified deployment for cloud-native environments could be improved. Overall, F5 BIG-IP DNS is a robust and reliable solution for global traffic management and application availability. With its advanced traffic steering capability, we are definitely getting great benefits from that. However, the user interface is the major thing I think can be improved. The cost also can be reduced. Those are the two or three points that need to be improved. There is some scope for improvement, including the user interface and pricing. That is why I gave it a nine.
DavidJackson1 - PeerSpot reviewer
Software Engineer at Abbott
Smart routing has improved uptime and performance and enables real-time automated traffic control
The best features IBM NS1 Connect offers, in my opinion, are real-time monitoring, intelligent traffic routing capabilities, and being API driven. The intelligent traffic routing and API-driven features of IBM NS1 Connect have helped my team by allowing routing based on user location, endpoint switching based on latency, and DNS response time. Additionally, IBM NS1 Connect has API integration. IBM NS1 Connect positively impacts my organization by making our website load faster and enhancing the user interface to be more intuitive and user-friendly. It's very economical and cost-effective. I also love it because it saves time through automation, saving around 30% to 35% of our time and also saving man-source. Our application uptime has improved by 40% to 45%. Although there have been a few outages, the service uptime has significantly improved our trust with clients. It is very cost-effective and affordable, hence providing a great return on investment.
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909,725 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
Financial Services Firm
11%
Construction Company
10%
Manufacturing Company
9%
Computer Software Company
8%
Comms Service Provider
13%
Financial Services Firm
10%
Computer Software Company
10%
University
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business7
Midsize Enterprise5
Large Enterprise10
By reviewers
Company SizeCount
Small Business1
Midsize Enterprise4
Large Enterprise13
 

Questions from the Community

What is your experience regarding pricing and costs for F5 BIG-IP DNS?
My experience with pricing, setup cost, and licensing was good. We got great support from the F5 sales team. They helped us to deploy it in our organization.
What needs improvement with F5 BIG-IP DNS?
While F5 BIG-IP DNS is a very powerful solution, some improvements could enhance the overall experience. For example, the user interface could be more modern and simplified. The reporting and analy...
What is your primary use case for F5 BIG-IP DNS?
My main use case for F5 BIG-IP DNS is creating an active-active setup. With two data centers, if I want to make them active-standby or active-active, my major use case is to redirect traffic from o...
What needs improvement with NS1 Managed DNS?
The aspect that needs improvement about IBM NS1 Connect is that the integration with AI is not seamless at this moment. That particular portion needs to be re-evaluated. We were able to increase th...
What is your primary use case for NS1 Managed DNS?
I have worked on both deployment models of IBM NS1 Connect in the company's environment and in the clouds. I utilize IBM NS1 Connect's Intelligent Traffic Steering feature.
What advice do you have for others considering NS1 Managed DNS?
I purchased IBM NS1 Connect through AWS Marketplace. We do use analytical tools built into the product. I rate this product 9 out of 10.
 

Also Known As

F5 BIG-IP DNS, F5 DNS Delivery
NS1 Managed DNS, NS1
 

Overview

 

Sample Customers

Ricacorp Properties, Bangladesh Post Office, Shawbrook Bank, Shinsegae Internet Duty Free
Avast Software, Bloomberg L.P., BBC, Carfax, CNBC LLC, Deloitte Consulting LLP, Disney Streaming, Dropbox, EBAY Inc, Gannett Media Corp, Salesforce, Wayfair, Workday
Find out what your peers are saying about F5 BIG-IP DNS vs. IBM NS1 Connect and other solutions. Updated: July 2026.
909,725 professionals have used our research since 2012.