> For the complete documentation index, see [llms.txt](https://docs.dnscontrol.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.dnscontrol.org/language-reference/top-level-functions/defaults.md).

# DEFAULTS

`DEFAULTS` allows you to declare a set of default arguments to apply to all subsequent domains. Subsequent calls to [`D`](/language-reference/top-level-functions/d.md) will have these arguments passed as if they were the first modifiers in the argument list.

### Example

We want to create backup zone files for all domains, but not actually register them. Also create a [`DefaultTTL`](/language-reference/domain-modifiers/defaultttl.md). The domain `example.com` will have the defaults set.

{% code title="dnsconfig.js" %}

```javascript
var COMMON = NewDnsProvider("foo");
DEFAULTS(
  DnsProvider(COMMON, 0),
  DefaultTTL("1d"),
);

D("example.com", REG_MY_PROVIDER, DnsProvider(DSP_MY_PROVIDER),
  A("@","1.2.3.4"),
);
```

{% endcode %}

If you want to clear the defaults, you can do the following. The domain `example2.com` will **not** have the defaults set.

{% code title="dnsconfig.js" %}

```javascript
DEFAULTS();

D("example2.com", REG_MY_PROVIDER, DnsProvider(DSP_MY_PROVIDER),
  A("@","1.2.3.4"),
);
```

{% endcode %}