## Create Regional Hostname

`client.Addressing.RegionalHostnames.New(ctx, params) (*RegionalHostnameNewResponse, error)`

**post** `/zones/{zone_id}/addressing/regional_hostnames`

Create a new Regional Hostname entry. Cloudflare will only use data centers that are physically located within the chosen region to decrypt and service HTTPS traffic. Learn more about [Regional Services](https://developers.cloudflare.com/data-localization/regional-services/get-started/).

### Parameters

- `params RegionalHostnameNewParams`

  - `ZoneID param.Field[string]`

    Path param: Identifier.

  - `Hostname param.Field[string]`

    Body param: DNS hostname to be regionalized, must be a subdomain of the zone. Wildcards are supported for one level, e.g `*.example.com`

  - `RegionKey param.Field[string]`

    Body param: Identifying key for the region

  - `Routing param.Field[string]`

    Body param: Configure which routing method to use for the regional hostname

### Returns

- `type RegionalHostnameNewResponse struct{…}`

  - `CreatedOn Time`

    When the regional hostname was created

  - `Hostname string`

    DNS hostname to be regionalized, must be a subdomain of the zone. Wildcards are supported for one level, e.g `*.example.com`

  - `RegionKey string`

    Identifying key for the region

  - `Routing string`

    Configure which routing method to use for the regional hostname

### Example

```go
package main

import (
  "context"
  "fmt"

  "github.com/cloudflare/cloudflare-go"
  "github.com/cloudflare/cloudflare-go/addressing"
  "github.com/cloudflare/cloudflare-go/option"
)

func main() {
  client := cloudflare.NewClient(
    option.WithAPIToken("Sn3lZJTBX6kkg7OdcBUAxOO963GEIyGQqnFTOFYY"),
  )
  regionalHostname, err := client.Addressing.RegionalHostnames.New(context.TODO(), addressing.RegionalHostnameNewParams{
    ZoneID: cloudflare.F("023e105f4ecef8ad9ca31a8372d0c353"),
    Hostname: cloudflare.F("foo.example.com"),
    RegionKey: cloudflare.F("ca"),
  })
  if err != nil {
    panic(err.Error())
  }
  fmt.Printf("%+v\n", regionalHostname.CreatedOn)
}
```

#### Response

```json
{
  "errors": [
    {
      "code": 1000,
      "message": "message",
      "documentation_url": "documentation_url",
      "source": {
        "pointer": "pointer"
      }
    }
  ],
  "messages": [
    {
      "code": 1000,
      "message": "message",
      "documentation_url": "documentation_url",
      "source": {
        "pointer": "pointer"
      }
    }
  ],
  "success": true,
  "result": {
    "created_on": "2014-01-01T05:20:00.12345Z",
    "hostname": "foo.example.com",
    "region_key": "ca",
    "routing": "dns"
  }
}
```