Tag: DNS

Get familiar with TTL

Get familiar with TTL

TTL is definitely necessary if you use the Domain Name System. It functions similarly to an expiration date for DNS records. We’ll see its purpose, its application in the DNS, and how long Time-to-Live takes. So, without further ado, let’s get down to business.

TTL Explanation

The time-to-live (TTL) parameter defines how long a data packet will stay alive after being sent across multiple hops. Either in-network memory or in cache memory. The data packet will be terminated when the timer expires or reaches its hop limit. Data packets vary in size, shape, and content, but they all have the same time-to-live. That time should be computed based on how long data packets must stay in a device to complete their missions.

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DNS resolution process described in detail

DNS resolution process described in detail

DNS resolution process, generally defined, is a service that uses a domain to reach an IP address. Due to this system, we can access websites easily and quickly just by entering their domain. In our article, we will explain in detail this whole process. 

The definition of DNS resolution

As we have already said, Domain Name System (DNS) resolution is the process of obtaining an IP address through its domain. This is in order to facilitate online users. To visualize what DNS resolution is, we can most easily imagine a phone directory with people’s names. We don’t remember their phone numbers because it’s too difficult. The same principle is working for DNS resolution. Through the domain name, it reaches its IP address.

Need more information? Look at the following article about the DNS resolution!

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A record vs AAAA record: What is the difference?

A record vs AAAA record: What is the difference?

A and AAAA records are among the most important in the DNS system. The process of resolving a domain name to find the IP address is managed by these two types of DNS records. This is what makes them valuable and essential to access the internet easily and quickly.  

What does A record mean? 

A record is the most popular and simple type used in DNS servers, where “A” stands for Address. The A record uses a domain name to find the device’s IP address connected to the Internet. 

Consider the following example – You are a web user and want to access www.abc123.com. This request is sent to the DNS resolver. It identifies the IP, and then the page automatically loads. 

In other words, the A record uses the domain name to find the IP address (IPv4 address). 

AAAA record – definition

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​3 Excellent GeoDNS providers

​3 Excellent GeoDNS providers

​ClouDNS

ClouDNS is a great Managed DNS provider with a large selection of plans. There is a special category for GeoDNS plans. There you will find 4 options for different needs. The most economic starts at just $9.95 per month, which is a very good deal. The reasons why you should consider this one from the list of GeoDNS providers are the following:

  • Large network of DNS servers. 34 points of presence (PoP), with many located in North America, Europe, and Asia.
  • Excellent customer service. 24-hour service and experts that speak English well.
  • DDoS Protected DNS. The DDoS attacks are getting stronger, so such a service for no extra charge is very neat.
  • EDNS-client-subnet support.
  • Different geolocation target options. You can select per region, country, or continent.

ClouDNS GeoDNS Plans:

​GeoDNS Start ($9.95 per month)

  • 4 Anycast DNS servers
  • DDoS protection for DNS
  • DNS direction by geolocation
  • 1 DNS zone
  • 1,000 DNS Records
  • 100M DNS queries per month
  • 1 DNS Failover checks
  • 3 Mail forwards
  • Extended Features

Need more info? Take a look at ClouDNS GeoDNS service page!

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​Anycast DNS vs. GeoDNS

​Anycast DNS vs. GeoDNS

Ok, so you are checking how to improve your DNS infrastructure. Great! There are different routing methods that you can use for your domain resolution. Now we will compare Anycast DNS and GeoDNS and see what their advantages and disadvantages are.

​What is Anycast DNS?

Anycast DNS is a simple routing method with a single IP address for all of the name servers. The servers are located in different international locations. That way, a client’s query will search for that single IP address, no matter from where in the world he or she connects, and it will reach the closest server.

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Anycast DNS – Major improvement for your network.

Anycast DNS – Major improvement for your network.

Are you building or managing a network? Congrats! That is a titanic job, but also exciting, especially if it’s a large network. A lot of stuff must be considered for it to work properly. For instance, have you ever thought about how the massive amount of data packets is handled within a network? Well, this task is possible thanks to routing methods, like Anycast DNS.

What is Anycast DNS?

Anycast DNS is a method for networks to route and address data packets. When you use it, a destination IP address is shared by different servers (or other devices) in different locations. Like this, routers (recursive servers) direct data packets addressed to such a destination to the closest location to the source or sender. 

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Expand your presence with GeoDNS

Expand your presence with GeoDNS

GeoDNS explained.

Geographical Domain Name System (GeoDNS) is a very interesting and effective method for distributing traffic. It is also called global traffic director or only traffic director. The unique thing about it is that it works by serving requests by location.

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A complete breakdown of the Domain Name System

A complete breakdown of the Domain Name System

Domain Name System – What is it?

The Domain Name System, or shortly DNS, is a decentralized system with a strictly established hierarchical composition for identifying devices and services on the Internet and private networks. It is one of the most important pieces of the Internet and serves for it to provide the best experience as it is nowadays.

Thanks to it, the queries for a specific domain name, such as example.com, are directed to all name servers on different levels. Each level gives a piece of information for the location of the domain name.

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