Start here
The essentials
Every guide in this topic
-
How to flush your DNS cache
Make your computer forget old DNS answers after a site move or record change. Commands for Windows, macOS, Linux and every major browser.
-
How to set up SPF, DKIM and DMARC
Three DNS records that prove your email is really from you, so it reaches inboxes and nobody else can send as your domain.
-
What is a nameserver?
Nameservers hold your domain’s DNS records. Changing them moves control of every record to a new provider at once.
-
How to point a domain to a server
Connect a domain to your hosting by setting A records, adding www, and checking the change before you rely on it.
-
What is DNS propagation, and how long does it take?
Why a DNS change reaches some people in minutes and others in hours, how to check its progress, and how to make the next…
-
DNS record types explained
A, AAAA, CNAME, MX, TXT, NS, CAA and SRV: what each DNS record does, with real examples you can copy.
-
How DNS works
DNS turns a name like example.com into the IP address of a server. Here is every step of a lookup, and why caching makes…