curl --request POST \
  --url https://api.dev.name.com/core/v1/domains/{domainName}/vanity_nameservers \
  --header 'Authorization: Basic <encoded-value>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "hostname": "ns1",
  "ips": [
    "192.168.1.10",
    "2001:0db8:85a3:0000:0000:8a2e:0370:7334"
  ]
}
'

import requests

url = "https://api.dev.name.com/core/v1/domains/{domainName}/vanity_nameservers"

payload = {
    "hostname": "ns1",
    "ips": ["192.168.1.10", "2001:0db8:85a3:0000:0000:8a2e:0370:7334"]
}
headers = {
    "Authorization": "Basic <encoded-value>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Basic <encoded-value>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    hostname: 'ns1',
    ips: ['192.168.1.10', '2001:0db8:85a3:0000:0000:8a2e:0370:7334']
  })
};

fetch('https://api.dev.name.com/core/v1/domains/{domainName}/vanity_nameservers', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.dev.name.com/core/v1/domains/{domainName}/vanity_nameservers",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'hostname' => 'ns1',
    'ips' => [
        '192.168.1.10',
        '2001:0db8:85a3:0000:0000:8a2e:0370:7334'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Basic <encoded-value>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.dev.name.com/core/v1/domains/{domainName}/vanity_nameservers"

	payload := strings.NewReader("{\n  \"hostname\": \"ns1\",\n  \"ips\": [\n    \"192.168.1.10\",\n    \"2001:0db8:85a3:0000:0000:8a2e:0370:7334\"\n  ]\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Basic <encoded-value>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.dev.name.com/core/v1/domains/{domainName}/vanity_nameservers")
  .header("Authorization", "Basic <encoded-value>")
  .header("Content-Type", "application/json")
  .body("{\n  \"hostname\": \"ns1\",\n  \"ips\": [\n    \"192.168.1.10\",\n    \"2001:0db8:85a3:0000:0000:8a2e:0370:7334\"\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.dev.name.com/core/v1/domains/{domainName}/vanity_nameservers")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Basic <encoded-value>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"hostname\": \"ns1\",\n  \"ips\": [\n    \"192.168.1.10\",\n    \"2001:0db8:85a3:0000:0000:8a2e:0370:7334\"\n  ]\n}"

response = http.request(request)
puts response.read_body

{
  "domainName": "example.com",
  "hostname": "ns1.example.com",
  "ips": [
    "192.168.1.1",
    "2001:0db8:85a3:0000:0000:8a2e:0370:7334"
  ]
}

{
  "message": "Bad Request",
  "details": "'domainName' cannot be null"
}

{
  "message": "Unauthorized"
}

{
  "message": "Permission denied",
  "details": "Failed authentication"
}

{
  "message": "Not Found",
  "details": "The requested domain does not exist."
}

{
  "message": "Method Not Allowed"
}

{
  "message": "Object already exists.",
  "details": "Cannot create multiple objects under same key."
}

{
  "message": "The 'Content-Type' header must be 'application/json' for this request."
}

{
  "message": "Rate Limit Exceeded"
}

{
  "message": "Internal Server Error",
  "details": "Something went wrong."
}

{
  "message": "The server received an invalid response from the upstream server."
}

{
  "message": "The upstream server is taking too long to respond."
}