Airlink CDMA/1x manual Fully Qualified Domain Name, Dynamic Name Resolution

IP Manager

Fully Qualified Domain Name

A fully qualified domain name (FQDN) generally has several parts.

•Top Level Domain (TLD): The TLD is the ending suffix for a domain name (.com, .net, .org, etc.)

•Country Code Top Level Domain (ccTLD): This suffix is often used after the TLD for most countries except the US (.ca, .uk, .au, etc.)

•Domain name: This is the name registered with ICANN (Internet Corporation for Assigned Names and Numbers) or the registry for a the country of the ccTLD (i.e. if a domain is part of the .ca TLD, it would be registered with the Canadian domain registry). It is necessary to have a name registered before it can be used.

•Sub-domain or server name: A domain name can have many sub-domain or server names associated with it. Sub-domains need to be registered with the domain, but do not need to be registered with ICANN or any other registry. It is the responsibility of a domain to keep track of its own subs.

A URL (Universal Resource Locator) is different from a domain name in that it also indicates information on the protocol used by a web browser to contact that address, such as http://www.airlink.com.

•.com is the TLD

•airlink is the domain (usually noted as airlink.com since the domain is specific to the TLD)

•www is the server registered with AirLink.com

•http:// is the protocol (html or web) used to access the webpage for AirLink

Dynamic Name Resolution

When an IP address is not expected to change, the DNS server can indicate to all queries that the address can be cached and not looked up for a long period of time. Dynamic DNS servers, conversely, have a short caching period for the domain information to prevent other Internet sites or queries from using the old informa- tion.

16 Raven CDMA User Guide for Verizon, version 2.23