Greetings gentle network admins and web programmers. GeoScaling DNS2 is a managed DNS server which you can control from a web browser.

• Redundancy and scalability assured by nameservers in three countries and two continents.
• Easy to use web interface
• Add and edit DNS records without reloading the page
• Changes propagate instantly to our nameservers
• Low time-to-live (TTL) ensures updated records are propagated on the Internet in less than 5 minutes
• Support for most types of records, including SRV

• Dynamic DNS support
• Upload, paste and import BIND zone files
• Import records by doing a zone transfer (AXFR)
• Redirect visitors dynamically based on
  • Their country of origin
  • Their network name (Autonomous System Number / AS / ASN)
  • The uptime of your servers
  • Custom information such as server loads sent to GeoScaling via our simple API
  • Any combination of the above
• Make live redirection decisions for each visitor with our smart subdomains powered by a subset of the PHP scripting language

Let me give you a simple example of what kind of redirection you can achieve with DNS2.

/*
as30890 - evolva ilink
as8708 - RDS
as34304 - teen telecom
as24745 - Romtelecom
*/
 
if($country=="ro")
{
  if( sizeof( array_intersect ( $as, array("as30890", "as24745") ) ) )
  {
    $output[] = array("A", "86.55.16.126"); // fisierulmeu.ro - evolva ilink
  }
  else if( sizeof( array_intersect ( $as, array("as34304", "as8708") ) ) )
  {
    $output[] = array("A", "193.138.195.114"); // teen telecom
  }
  else // another network, just send both ips
  {
    $output[] = array("A", "86.55.16.126"); // fisierulmeu.ro
    $output[] = array("A", "193.138.195.114"); // teen telecom
  }
}
else
{
  $output[] = array("A", "91.121.158.100", "400"); // ovh international, ttl set to 400
}

The above code redirects the user only based on country and AS numbers. If a user comes from Romania and is in certain networks, he/she gets one set of IP addresses, otherwise another. If the user is an international visitor, he/she gets the address of the international mirror in France. This effectively lets you build a Content Delivery Network in a few lines of code, where each user can be redirected to the best/closest mirror. The above code actually runs on a limited version of PHP.

The advanced features of DNS2 are geared towards medium and large websites.