If you are within a company, then you need to talk to the person responsible for maintaining your company's DNS.
If you are a private person with your own connection to the Internet, you can use
Cloud DNS[
^] to associate your domain name to an IP address. To do so, you must have your domain registrar set your domain name's NameServer parameters to point to Cloud DNS's Domain Name Servers.
1. You ask your domain registrar to set the NameServer parameters for your domain to:
ns1.cloudns.net
ns2.cloudns.net
ns3.cloudns.net
ns4.cloudns.net
2. You register on Cloud DNS and setup the various record types for your DNS entry.