Reverse DNS Lookup

Find the reverse DNS entry (PTR) for a given IP. This is generally the server or host name.

URL

https://api.viewdns.info/reversedns/

Parameters

ip - the IP address to retrieve the reverse DNS record for
output - the output format required ('xml' or 'json')
apikey - your api key

Sample Query

ip: 199.59.148.10

GET https://api.viewdns.info/reversedns/?ip=199.59.148.10&apikey=yourapikey&output=output_type

XML Response (output=xml)

<?xml version='1.0' encoding='ISO-8859-1'?>
<viewdns>
  <query>
    <tool>reversedns_PRO</tool>
    <ip>199.59.148.10</ip>
  </query>
  <response>
    <rdns>r-199-59-148-10.twttr.com</rdns>
  </response>
</viewdns>

JSON Response (output=json)

{
    "query": {
        "tool": "reversedns_PRO",
        "ip": "199.59.148.10"
    },
    "response": {
        "rdns": "r-199-59-148-10.twttr.com"
    }
}