Knowledge / 6 terms

Glossary

The words that turn up in hosting emails, DNS settings and SEO reports, each explained in a few paragraphs with what it means for your business.

DNS
The Domain Name System: the public directory that turns a domain name into the addresses of the services behind it, such as your website and your email.
Nameserver
The server that holds the authoritative DNS records for a domain. Whoever runs your nameservers controls where your website and email point.
A record
A DNS record that points a name, usually your bare domain, at the IP address of the server that hosts your website.
CNAME record
A DNS record that makes one name an alias of another, commonly used to point www at a hosting provider without hard-coding an IP address.
MX record
A DNS record that tells the rest of the internet which servers accept email for your domain. Change it and your email goes somewhere else.
TTL (time to live)
The number of seconds other servers may cache a DNS record before checking it again. It decides how quickly a DNS change is seen everywhere.
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