==> Request
POST http://rwhois.domain-registry.nl/is
Connection: open
Content-Type: text/xml; charset="utf-8"
X-Net-Whois-SIDN: 0.95

<?xml version="1.0" encoding="UTF-8"?>
<is-query xmlns="http://rxsd.domain-registry.nl/sidn-whois-drs50">
  <lang>NL</lang>
  <domain>craneveer.nl</domain>
</is-query>

--> Response
HTTP/1.0 200 Document follows
Connection: close
Pragma: no-cache
Server: whoisd-reg 5.0.10 app0i.sidn.local
Content-Language: nl
Content-Length: 350
Content-Type: text/xml; charset='utf-8'
Client-Date: Thu, 26 Aug 2010 06:45:19 GMT
Client-Peer: 94.198.154.139:80
Client-Response-Num: 1

<?xml version="1.0" encoding="UTF-8"?>
<is-response xmlns="http://rxsd.domain-registry.nl/sidn-whois-drs50">
  <is-status domain="craneveer.nl">
    <date>2010-08-26T06:45:19.95917Z</date>
    <available>false</available>
    <code>active</code>
    <explain lang="nl-NL" format="plain">craneveer.nl is actief</explain>
  </is-status>
</is-response>

--> Perl structure
$VAR1 = {
  is_status => {
    domain => 'craneveer.nl',
    date => '2010-08-26T06:45:19.95917Z',
    explain => {
      format => 'plain',
      lang => 'nl-NL',
      _ => 'craneveer.nl is actief'
    },
    code => 'active',
    available => 0
  }
};