DNS – Domain Name System is like a telephone directory for the internet, consisting of the names of servers translated into IP addresses for the web browsers to identify.
Confused? Let us elaborate on it in a simple way. DNS servers or domain name system servers act as telephone directories for web browsers and computer networks. For example, humans use the telephone directory to find the phone number of people by searching their names in the directory, which has a database of names and telephone numbers.
Like the telephone directory, the DNS server has a list of domain names active on the internet. Whenever we type a domain name in the search box, the web browser searches the DNS servers for the entered query and then navigates us to the specific domain.
Now, here you may think, then what is the use of DNS servers, as web browsers can directly search for the typed domain names? But the web browsers don’t understand the alphabet; instead, it interacts with the help of IP addresses, and the DNS servers translate the domain names into IP addresses so that the web browsers can identify and load the resources.
Types of DNS service-
Authoritative DNS – Developers use an authoritative DNS service’s update mechanism to keep track of their domain name system (DNS) records for use in the public sphere. The DNS server then responds to requests for name resolution by translating domain names into IP addresses. An authoritative DNS server is the one with ultimate control over a domain and is responsible for responding to queries from recursive DNS servers with the domain’s IP address.
Recursive DNS – In most cases, clients will not contact authoritative DNS services with queries; instead, they will connect to a recursive DNS service, also known as a resolver. While it doesn’t store or manage any DNS records itself, a recursive DNS service can obtain this data on your behalf, much like a hotel’s concierge. In response to a DNS query, a recursive DNS will return the original source or IP address if it has cached the DNS reference. If it can’t, it sends the request to a DNS server that can.
Managed DNS – When a user uses an off-premise DNS capability from a service provider through a cloud network to have internet access to their website, it is termed managed DNS. A managed DNS is a service where a third party hosts and optimizes the DNS architecture to provide a fast, secure, and more reliable experience.
Key benefits of Managed DNS service
- Simplicity – By employing a managed DNS service, a website’s owner doesn’t have to worry about setting up and maintaining their own DNS servers.
- Cost Competitive – Using a Managed DNS service in a multi-tenant environment allows the customer to save money on hardware and software maintenance costs by sharing the provider’s resources among many different customers around the world.
- Highly Secured – Managed DNS services deal with DoS and security threats to DNS servers, relieving customers of the burden of maintaining their own DNS servers and protecting them with high security.
- High Performance – Most companies that offer managed DNS services also promise certain levels of uptime and speed. Websites and apps benefit greatly from lightning-fast DNS lookup times.
- Availability – If you want the highest level of availability but want to avoid investing in a highly available and resilient infrastructure, managed DNS services are the way to go. DNS Load Balancing is the process of setting up a domain’s DNS in such a way that client requests to the domain are dispersed across a group of servers, and this redundancy can be used to support this.
Evolution of Managed DNS
Managed DNS has come a long way from its inception as an always-on, performance-driven DNS service, and now it provides a variety of other valuable features. If you’re looking into managed DNS services, think about the following extras. These may initially be reserved for more experienced users, but they will likely become the norm soon.
Let us have a look at the possible evolutions in managed DNS –
Infrastructure as a Code – DevOps, edge computing, and serverless architectures all need an API-first strategy for today’s networks. NS1’s REST APIs and pre-configured designs make DNS an enabler (rather than a hindrance) of these systems. Tools like Terraform simplify the process of integrating new software with pre-existing infrastructure.
Dedicated DNS – While some businesses are content to outsource their DNS to a third party simply, others prefer to take extra precautions to ensure that their infrastructure is immune to widespread disruptions. By providing a dedicated DNS service that is both physically and virtually isolated, NS1 provides these clients with an additional safeguard.
Traffic management – The modern role of managed DNS extends far beyond simple load balancing to encompass cost minimization, resource maximization, and app enhancement. DNS routing decisions are optimized for certain use scenarios using NS1’s potent Filter ChainTM technology.
Data Driven – Recent managed DNS services benefit greatly from real-time analytics, making them much faster and more responsive. NS1’s Pulsar service analyses application data to find the optimal path for a given set of applications at any given time. We see much less delay as a result.
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How to monitor managed DNS services?
DNS-managed services and servers hosted on a company’s infrastructure can benefit from synthetic DNS testing. Agents in the cloud (connected to the networks of major ISPs) and local agents are used to testing the DNS servers. On-premise agents offer insight into both the internal and external DNS infrastructure, whereas Cloud agents enable public-facing DNS monitoring.
It is possible to address the challenges of monitoring DNS infrastructure with the help of network intelligence technologies and synthetic application testing tools. For network operations to accurately monitor hybrid network performance, they require detailed and accurate network path visibility in addition to routing and application layer data. The DNS infrastructure of hybrid networks can be evaluated with the help of synthetic application testing.
Now, as we have reached the end of this article, you must have got some really valuable insights about the DNS and managed DNS services, which is one of the key aspects of the current internet connectivity. With this, we can also conclude that the managed DNS services, with the continuous evolutions happening in the segment, can assist the global market for the DNS services to boost the economy and have a substantial revenue share in the global market.
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