Reverse NS Lookup

Takes a nameserver (e.g. ns.example.com) and quickly shows all other domains that share the same nameserver. Useful for identifying other domains that share the same web server or hosting company.

URL

https://api.viewdns.info/reversens/

Parameters

ns - the nameserver to query
output - the output format required ('xml' or 'json')
apikey - your api key
page - view further pages of results (e.g. '2' to view results 10,001 to 20,000) - optional

Sample Query

ns: ns1.websitewelcome.com

GET https://api.viewdns.info/reversens/?ns=ns1.websitewelcome.com&apikey=yourapikey&output=output_type

XML Response (output=xml)

<?xml version='1.0' encoding='ISO-8859-1'?>
<viewdns>
  <query>
    <tool>reversens_PRO</tool>
    <nameserver>ns1.websitewelcome.com</nameserver>
  </query>
  <response>
    <domain_count>10897</domain_count>
    <total_pages>2</total_pages>
    <current_page>1</current_page>
    <domains>
      <domain>0ctastore.com</domain>
      <domain>100-dollars-4-laptop-computer-repairs-570-457-6610.com</domain>
      <domain>1024project.org</domain>
      <domain>104dtd.org</domain>
      <domain>10gbpsservers.com</domain>
      <domain>10parrots.com</domain>
      <domain>11thcommandmentrecords.info</domain>
      <domain>11thcommandmentrecords.org</domain>
	...
    </domains>
  </response>
</viewdns>

JSON Response (output=json)

{
	"query": {
		"tool": "reversens_PRO",
		"nameserver": "ns1.websitewelcome.com"
	},
	"response": {
		"domain_count": "10897",
		"total_pages": "2",
		"current_page": "1",
		"domains": [{
			"domain": "0ctastore.com"
		}, {
			"domain": "100-dollars-4-laptop-computer-repairs-570-457-6610.com"
		}, {
			"domain": "1024project.org"
		}, {
			"domain": "104dtd.org"
		}, {
			"domain": "10gbpsservers.com"
		}, {
			"domain": "10parrots.com"
		}, {
			"domain": "11thcommandmentrecords.info"
		}, {
			"domain": "11thcommandmentrecords.org"
		}
		...
		]
	}
}