DNS Related

How DDNS works
How dynamic DNS (DDNS) works and what it is
Decrementing Your Zone Serial
How to lower your zone serial in Secondary DNS
Static DNS - End Of Life
DynDNS no longer offers the Static DNS service. If you would like to keep your DynDNS hostname, you may instead use our Dynamic DNS service.
DNS Caching
All records in DNS have a Time to Live (TTL) value. This value dictates how long a record should be stored locally before a new copy of the record must be retrieved from DNS. The record storage is known as...
Record Types Supported in Custom DNS Expert Interface
Custom DNS provides two separate interfaces to editing DNS records, the "Standard" interface which provides support for just A, CNAME, MX and TXT records and the "Expert" interface which includes support for additional record types. This KB article provides examples of the use of each type of record supported in the Expert interface.
Record Types Supported in Custom DNS Standard Interface
This KB article provides examples of the use and format of each type of record supported in the Standard interface.
Using DynDNS Services with CCTV/Security/POS Systems
The growth in the availability of high speed "broadband" connections (DSL and cable) is bringing significant changes to a number of markets and technologies, including the deployment of CCTV (closed circuit TV) and security cameras as well as POS (point of sale) systems.
Reverse DNS in Custom DNS
This Knowledge Base article provides info on how to setup Reverse DNS in our Custom DNS service.
Reverse DNS
This Knowledge Base article provides a basic overview of what Reverse DNS is and how to set it up in our various services.
Why Custom DNS
A not uncommon question we get asked is "Why should I use Custom DNS"? Oddly enough we get this question from several different types of customers.
What is Recursive DNS
This KB article addresses the basic questions of what is Recursive DNS and how it compares to Custom DNS.
What is DNS?
The Domain Name System or Service (DNS) is a process that maps hostnames (how humans address servers) to IP addresses (how computers address servers).When you visted www.dyndns.org, your computer resolved that hostname as 63.208.196.100. This translation happens every time you...
Using Custom DNS with "Subdomains"
Intro Custom DNS is designed primarily to work with domains owned/registered by the customer (example.com, example.co.uk, etc). However, Custom DNS can also be used with a subdomain of such a domain (host.example.com, host.example.co.uk, etc) as well as hosts within services...
Custom/Secondary DNS Conversion
Because of the way that Custom DNS and Secondary DNS use the same set of nameservers, switching a domain from one of these services to the other can result in down time without using the proper procedure. If you are...
Running a Hidden Primary
This article discusses using Secondary DNS with a hidden primary DNS server (sometimes referred to as blind secondary DNS). Yes, Secondary DNS will support this, but there are some specific pitfalls to avoid which we'll discuss in this article. What...
Loopback Connections
A common problem that many customers encounter when using a NAT router is that they want to be able to access their web site from within their local network, but their NAT router does not support "loopback" connections. What is...
Glue Records
Many people have often wondered why they can't run a DNS server for their own .com/.net/.org/etc domain on a dynamic IP. It seems to simple to enter yourname.dyndns.org as the DNS server in your registrar's form, and yet if you...
Dynamic DNS and NAT
There has been tremendous growth in the use of Network Address Translation (NAT) functionality. These devices include Windows machines running Internet Connection Sharing, included in Windows 98SE/Me/2000/XP, or other similar software such as Sygate Home Network. NAT software is also...