Articles
Change a domain’s nameservers
Nameservers decide which DNS provider answers for a domain.Applies to: Nameservers and DNS...
Manage DNS records
DNS records connect a domain to websites, email and other services.Applies to: Nameservers and...
A, AAAA, CNAME, MX and TXT records explained
Use the record type specified by the service being connected.Applies to: Nameservers and DNS...
DNS propagation and caching
Resolvers can keep old DNS data until the previous TTL expires.Applies to: Nameservers and DNS...
Choose a DNS TTL value
TTL controls how long resolvers may cache a record.Applies to: Nameservers and DNS recordsDNS...
Register child nameservers and glue records
Glue is required when a domain delegates to nameservers inside that same domain.Applies to:...
Plan a DNS change with minimal downtime
Prepare the destination service and lower risk before changing nameservers or production...
Create and troubleshoot A and AAAA records
A records publish IPv4 destinations and AAAA records publish IPv6 destinations for a...
Create and troubleshoot a CNAME record
A CNAME makes one hostname an alias of another hostname; it must not be confused with a URL...
Create and troubleshoot MX records
MX records route inbound email for a domain to mail-server hostnames in priority order.Applies...
Create and troubleshoot TXT records
TXT records commonly publish service verification and email-authentication values and must be...
Create SRV and CAA records
SRV records publish a service location and port, while CAA records restrict which certificate...
Use different providers for website and email hosting
Website and email can remain with different providers when A, CNAME and MX records are planned...
Diagnose NXDOMAIN and SERVFAIL DNS errors
NXDOMAIN usually means the requested name does not exist; SERVFAIL means a resolver could not...
Check DNS with dig, nslookup and public resolvers
Use DNS tools to distinguish authoritative data from cached answers and to record evidence for...
