> ## Documentation Index
> Fetch the complete documentation index at: https://pdns-webui.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Zone metadata

> Manage PowerDNS zone metadata and autoprimaries.

PowerDNS zone metadata controls behavior that is not represented by ordinary
DNS records.

PowerDNS Web UI exposes common metadata used for zone transfers and SOA serial
handling.

## Supported metadata

| Metadata          | Purpose                                                 |
| ----------------- | ------------------------------------------------------- |
| `ALLOW-AXFR-FROM` | IP addresses or ranges allowed to AXFR this zone        |
| `ALSO-NOTIFY`     | Extra nameservers or IPs to notify after zone changes   |
| `AXFR-SOURCE`     | Source address PowerDNS uses for outgoing AXFR requests |
| `SOA-EDIT`        | SOA serial modification policy for zone changes         |
| `SOA-EDIT-API`    | SOA serial modification policy for API changes          |

## ALLOW-AXFR-FROM

Use `ALLOW-AXFR-FROM` on a primary zone to permit secondaries to transfer it.

Example values:

```text theme={null}
192.0.2.10
2001:db8::10
```

## SOA serial behavior

`SOA-EDIT` and `SOA-EDIT-API` control how PowerDNS adjusts SOA serial numbers
after zone changes.

Choose a policy that matches your operational model. If your secondaries depend
on serial increases, make sure API edits update the serial consistently.

## ALSO-NOTIFY

Use `ALSO-NOTIFY` when you want PowerDNS to send notifications to additional
secondaries beyond the default NS-derived targets.

Enter one destination per line, for example:

```text theme={null}
192.0.2.53
2001:db8::53
ns-secondary.example.net
```

## Autoprimaries

Autoprimaries let PowerDNS automatically provision secondary zones when a
trusted primary sends a notification.

PowerDNS Web UI can list, create, and delete autoprimary entries through the
PowerDNS API.