# ADGUARDHOME\_AAAA\_PASSTHROUGH

`ADGUARDHOME_AAAA_PASSTHROUGH` represents the literal 'A'. AdGuardHome uses this to passthrough the original values of a record type.

The second argument to this record type must be empty.

See [this](https://github.com/AdguardTeam/Adguardhome/wiki/Configuration) page for more information.

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

```javascript
D("example.com", REG_MY_PROVIDER, DnsProvider(DSP_MY_PROVIDER),
  ADGUARDHOME_AAAA_PASSTHROUGH("foo", ""),
);
```

{% endcode %}