This can be a tricky question but I will answer it as far as this company is concerned. We can pass reverse to you in two ways:
1) Pass authority to your nameserver. We basically point a zone such as "1.252.66.in-addr.arpa" to your nameserver(s) then y...
Again this can be a tricky question but I'll try to show it to you as basic as possible with examples. First you will install your and open the named.conf (usually in /etc/namedb/ or /usr/local/etc/namedb. You will add your domain (if this is the master n...
This is very very easy. In your host file you will simple put:
www IN A 66.66.66.66
IN A 66.66.66.67
IN A 66.66.66.68
Each time DNS is pulled from www.domain.com it will rotate what it resolves to. First time it will be 66.66.66.66 and the second ...
For our service it is suggested you use our nameserver:
66.252.3.10
And you can use other nameservers that accept public lookups. The above address should be in your resolv.conf no matter what though.
Obtaining a domain name involves checking for availability and registering the domain with a Domain Name Registrar. Domain names may be translated into IP addresses by the DNS (Domain Name Service), but obtaining a domain name is completely different than...
The domain namespace is divided into regions called zones. In order to maximize availability, the InterNIC (Internet's Network Information Center) requires that every zone have both a primary and secondary DNS server.
We maintain two public nameservers...
When a remote site on the internet wants to send someone at your domain an e-mail message, their mail server software looks up the hostname of the appropriate mail server to receive that mail. This type of record is referred to as an "MX," "Mail Exchanger...
The term hostname generally refers specifically to the part of the fully qualified name that does not include the domain name itself. Let's say you owned emergency.com, you might want to have a host on your network called "incaseof". So here, incaseof wou...
In order to transfer your domain registration it must first meet the following criteria:
1. Your domain name is more than 60 days old.
2. You have access to the administrative contact email - Or the account holder email.
3. Your domain name has not e...
A nameserver is the program that actually does the work of looking up names. There are three main types of nameserver. A CACHING-ONLY nameserver does look-ups of names, but controls no name records itself. A PRIMARY nameserver not only does lookups of nam...
Forward records, or A records, are those which translate from machine names to ip addresses. These are the most commonly used records. A typical A record is constructed as follows:
gigenet.test.com. IN A 192.168.1.1
(this example shows an A record w...
Each part of DNS information that may be cached separately has a time to live associated with it. Once this time expires, the cached information must be discarded and has to be obtained from an authoritative server again if it is needed. The TTL is not co...
ICANN, which is short for the Internet Corporation for Assigned Names and Numbers, is a central authority in an essentially decentralized, neutral and ungoverned global network of networks. Icann runs the addressing system, giving out blocks of unique ide...
A PTR record is the reverse of an A record. That is, it gives an IP address to a hostname, rather than vice versa. Given an IP address of the form 69.65.30.20, the usual form for a PTR record is this:
20.30.65.69.in-addr.arpa. PTR host.name.
Note th...
The hardest part to understand about PTR records for inexperienced DNS administrators is delegation. For forward zones (i.e. domains), the domain is registered using a domain registrar, and the registrar is told to “point†the domain to a particular s...
You're moving your servers to new addresses, but it’s not as simple as just changing the IP settings of the boxes. There are issues to consider.
If you move all of your servers to new addresses, all at once, nobody will know where to find them. But i...
Moving a domain name can take a couple of days. First, the central registry has to update their databases and over the weekends they can be a bit slow. This can take up to a day sometimes. Besides that, each and every ISP has to cache the new registry dat...
The name servers might not be registered at the Registry, or you entered the address of your name servers incorrectly. Please don't use the IP address of your name servers when you change the name server information of your domain in our Domain Manager. U...
Dynamic DNS allows machines with IP addresses that change to have permanent addresses on the internet. You can buy a domain name anywhere, and then point that domain name to your machine. Before dynamic DNS you had to have a fixed IP to run a web server. ...
It depends. You can be resonably sure in assuming that the Domain Name returned by a Reverse DNS Lookup is correct but the real question is "Is the IP Address I looked up the real IP address?"
An innocent user visiting your web site or sending you an e...
Just like unlisted telephone numbers there are unlisted IP addresses. For example, an Internet Service Provider (ISP) may be assigned a block of IP addresses and it may not give names to all those addresses.
In the same way that a domain name must be registered with a central registry to be recognized on the Internet, DNS (domain name servers) must also be registered with a central registry. All DNS registrations must be submitted to the official registrar fo...
To make any changes to your IP Addresses, Domain Aliases, MX Records or SOA Information after you have changed the DNS servers listed as authoritative for your domain name from one company's DNS to another company's DNS, you must contact the new DNS Admin...
record for the machine before aliases can be added. The host name of a machine that is stated in an A record is called the canonical, or official name of the machine. Other records should point to the canonical name. Here is an example of a CNAME:
www....
The SOA record is the most crucial record in a DNS entry. It conveys more information than all the other records combined. This record is called the start of authority because it denotes the DNS entry as the official source of information for its domain.
There are many other types of DNS records, like Host Information (HINFO) or Text (TXT) are informational for people only, listing facts about the domain and types of computers used that are not vital to the operation of DNS.
You may see in your name server logs a message about a lame response or lame delegation. When performing recursion, the process of looking up a record from the DNS, a name server must generally query several servers, follow up on referrals, and go down th...
You may register domain names up to 67 characters in length, including the extension such as ".com". So in reality, the name has a limit of 64 characters. Only 0-9, A-Z, and the dash ( - ) are valid characters in a domain name.
Propagation is the time it takes all DNS servers and Internet Service Providers to update their DNS tables to reflect any new website locations. The rate at which this happens can vary among providers. New domain name registrations are usually live on the...
IP Pointing allows you to forward your domain traffic to a specific IP address. A server is required at the designated address to use this forwarding method.
Information about who is responsible for domain names is publicly available to allow rapid resolution of technical problems and to permit enforcement of consumer protection, trademark, and other laws. The registrar will make this information available to ...
Yes, you may change the registrar sponsoring your domain name (60 days after intial registration.) For details on the transfer process, contact the registrar you would like to assume sponsorship of the registration.
The .com, .info, .name, .net, and .org TLDs are open and unrestricted. Traditionally, however, names in .net have been used by organizations involved in Internet infrastructure activities and .org is frequently used by noncommercial organizations. .biz is...
The .aero, .coop, and .museum TLDs are sponsored TLDs and are designed for use within a specified community. Registration restrictions for these TLDs have been developed by the sponsor with input from the community. For more information on registering nam...
Two letter domains, such as .uk, .de and .jp (for example), are called country code top level domains (ccTLDs) and correspond to a country, territory, or other geographic location. The rules and policies for registering domain names in the ccTLDs vary sig...
It stands for "Internet Assigned Numbers Authority" (or sometimes, "Internet Assigned Names and Numbers Authority"). Its job is to maintain lists of predefined numbers and names that have to be agreed by everyone for the Internet to work. The numerical ne...