---
title: "General query parameters"
url: "https://help.internetx.com/en/api/core-general-query-parameters/"
lang: "en"
section: "API reference — API reference (XML/JSON)"
breadcrumb: "JSON > JSON API basics"
updated: "2023-09-12"
---

# General query parameters

## General query parameters

There are generally valid query parameters that can be applied to multiple routes.

### replyTo - configuring different email address for system replies.

By default, system replies are sent to the email address stored in the user profile of the AutoDNS account. If system replies are to be sent to an alternate email address, this is achieved using the query parameter "replyTo".  The `?replyTo=mail@domain.com` must be appended to the URL to which the request is sent.

```
POST /domain?replyTo=mail@example.com
```

### ctid (= client transaction id)

For easier assignment of results, an ID (myRequestID) can optionally be sent with the query parameter ctid for queries.

```
GET /domain?ctid=myRequestID
```

### Multiple "keys" query parameters

If multiple "keys" query parameter are specified, the system returns a result filtered by all criteria.

```
POST /domain/_search?keys[]=$key1&keys[]=$key2
```