Determine if you can register the specified domains.
Sample Request Request Parameters<namesilo>
<request>
<operation>checkRegisterAvailability</operation>
<ip>55.555.55.55</ip>
</request>
<reply>
<code>300</code>
<detail>success</detail>
<available>
<domain price="9.99">namesilo.com</domain>
<domain price="19.99">namesilo.org</domain>
</available>
<unavailable>
<domain>namesilo.net</domain>
</unavailable>
<invalid>
<domain>n#mesilo.com</domain>
</invalid>
</reply>
</namesilo>