DNS and domains

What is an A record?

An A record links a host name to an IPv4 address.

An A record determines the IPv4 address to which a domain or subdomain points. It is usually used to connect a website to a web server.

Which value should you enter?

Record typeA
ValueIPv4 address, for example 203.0.113.10
TTLUse the default value unless a provider specifies otherwise.

What should you consider?

  • Use @ or an empty host name for the root domain.
  • Use, for example, www, shop or portal for a subdomain.
  • Check in advance that the destination address is a valid public IPv4 address.
DNS changes take time

After saving, an old value may temporarily remain in cache. Therefore, check not only in your browser but also with an external DNS checker.

Frequently asked questions

When will a change to A become visible?

This depends on the TTL and provider caches. The change is often visible within a few minutes, but old responses may be retained for longer.

Can I undo a DNS change?

Yes. Restore the previous value and save again. This correction may also temporarily be affected by DNS cache.

Do I need to change the TTL?

Usually not. For a planned migration, you can lower the TTL in advance so later changes are retrieved more quickly.

Still need help?

Email support@mosthosted.com and include your domain name, the required record and the value.