The record type that allows multiple domain names to share the same IP address is a "CNAME" (Canonical Name) record.
A CNAME record is used to create an alias or pointer from one domain name to another. It allows multiple domain names to be associated with the same IP address by mapping them to a single canonical or primary domain name.
For example, let's say you have two domain names: "www.example.com
" and "www.example.net
." You want both domain names to point to the same website hosted at the IP address 192.0.2.1. Instead of creating separate A records for each domain name with the same IP address, you can create a CNAME record for "www.example.net
" and point it to "www.example.com
." This way, both domain names will resolve to the same IP address.
CNAME records are commonly used when setting up subdomains, such as "blog.example.com" or "shop.example.com," to point to the same IP address as the main domain. They provide a way to manage multiple domain names and keep them in sync with the IP address changes or website migrations.
It's important to note that CNAME records only apply to domain names and cannot be used for the root domain (e.g., example.com). Additionally, using a CNAME record for a domain name typically means that the domain cannot have other record types associated with it, such as MX records for email or NS records for nameservers.