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CNAME Record - How it Works, Alternatives & Advanced Use Cases
A Canonical Name (CNAME) Record is used in the Domain Name System (DNS) to create an alias from one domain name to another domain name.
Learn the basics of what DNS protocol is and how it defines communication between DNS client, DNS resolver and DNS name servers.
IPv6 DNS: Understanding IPv6 and a Quick Implementation Guide
IPv6 is a new version of the Internet Protocol, which uses 128-bit IP addresses. We explain IPv6’s slow adoption, and how to support IPv6 in your DNS server.
DNS Failover: Basic Concepts and Limitations
DNS failover helps websites or network services remain accessible in the event of outage. Learn how traditional DNS failover works and its limitations.
DNS: Types of DNS Records, DNS Servers and DNS Query Types
Need a refresher on DNS? In this article, we introduce DNS, explain 3 Types of DNS queries, 3 Types of DNS servers, and 10 types of common DNS records.
BIND DNS: Pros, Cons and Alternatives
How BIND works, advantages and disadvantages, and alternatives including managed DNS and next-generation DNS solutions.
DNS Zones Explained
Learn about DNS zones and zone files and how they relate to domains. Understand DNS zone types, the format and structure of DNS zone files and more.
DNS & Devops
Primary DNS vs. Secondary DNS and Advanced Use Cases
Learn how primary DNS servers work with secondary DNS servers, and how to use secondary DNS for redundancy, performance, DNS migration, and more.
Become a DNS master with NS1’s free eLearning curriculum.
Understanding NS1's GeoFilters
Learn how to successfully use geotargeting and geofencing to route traffic. Includes detailed technical info about the differences between both methods, and how and when to use them in tandem.
Anycast: The Fastest Route to a Smart Internet
Understanding TTL Values In DNS Records
Time To Live, or TTL for short, is the sort of expiration date that is put on a DNS record. The TTL serves to tell the recursive server or local resolver how long it should keep said record in its cache.
The Root Name Servers
What's The Difference? Authoritative and Recursive DNS Explained
NS1 Filter Chain: A Quick Primer
One of the most powerful aspects of the NSONE platform is our unique Filter Chain technology to enable easy configuration of traffic management algorithms for your application and network.
What is Split Horizon or Multiview DNS?
Adding Intelligence to Internet Traffic Routing
In this post we'll discuss key challenges affecting application performance and examine the birth of new technologies, multi CDN designs and how they affect DNS.
Behind the Scenes: How Geographic Routing Works
The basic concept behind geographic routing, also known as geolocation or geo-locational routing, is to return a DNS answer that is physically closest to the requestor.
DNS Records Explained
DNS (Domain Name System) records are what keeps the internet working the way consumers expect, and new records are being added as our needs grow.
What Exactly Is Secondary DNS?
A lot of registrars ask you for “primary” and “secondary” nameservers for your domain, but that’s not really what secondary DNS is all about.