Technical Library

Domain Name System

Introduction

Integration

Subdomains can be tricky things to deal with. Sometimes, it is hard to decide when to use a subdomain versus when to use a few different domain names.

With company.com as the parent domain, let's imagine that there are two offices, the Los Angeles office and New York office. Each office wants their own domain, but instead of getting a subdomain of company.com, they want ny-company.com and la-company.com.

This doesn't make very much sense. It will be much easier and much more efficient to have company.com delegate two subdomains: ny.company.com and la.company.com.

Another problem that is frequently run into with subdomains is figuring out how to delegate them.

A name server for company.com cannot delegate that same zone to another name server. It can delegate a subdomain (i.e., ny.company.com). The "parent domain," company.com is this case, will delegate the subdomain to the other name servers in their zone files.