ASPnix Windows-based hosting services use JHSoftware's Simple DNS Plus. We currently use the latest v6 release. This software provides far better performance and meets the demands of today's DNS requirements better than any other server we have used to date. It fully supports all DNS record types and DNS standards.

DNS forms the foundation of how users and systems locate your websites, APIs, and mail servers. A high-performance DNS implementation reduces initial connection latency and prevents resolution failures that could make even the fastest application appear offline. Our choice of Simple DNS Plus ensures consistent, standards-compliant name resolution across all hosted domains on Windows infrastructure.

#Our DNS Implementation

All DNS queries for Windows hosting accounts are answered by servers running JHSoftware Simple DNS Plus v6. The software runs natively on Windows and is tuned for the query patterns typical in shared and dedicated hosting environments. Its architecture prioritizes speed and low overhead, allowing our DNS infrastructure to scale efficiently as customer domains and traffic grow. We selected and continue to run this software after comparing it against multiple alternatives in production scenarios.

#Performance Benefits

In high-volume DNS environments, even small inefficiencies in the server software translate into measurable delays for end users. Simple DNS Plus was chosen specifically because it delivers better performance under load and handles modern DNS demands more effectively than prior solutions we operated. This results in faster TTL-controlled caching behavior, reduced CPU utilization on the DNS nodes, and fewer timeouts during traffic spikes.

  • Faster response times for recursive and authoritative queries
  • Efficient memory and CPU usage on Windows servers
  • Proven stability during sustained high query rates

#DNS Standards and Record Support

Compliance with DNS RFCs is non-negotiable for reliable internet operation. Simple DNS Plus implements the complete specification set, ensuring every record type behaves exactly as expected by resolvers, mail servers, and security tools worldwide. This eliminates compatibility problems that can occur with limited or outdated DNS implementations.

  • A and AAAA records for IPv4 and IPv6 addressing
  • MX records to direct email delivery
  • CNAME and DNAME for aliasing and domain mapping
  • TXT records used for SPF, DKIM, and domain verification
  • NS, SOA, SRV, and PTR records for delegation and infrastructure

#Verifying DNS Resolution

You can confirm that your domain resolves through our name servers using built-in operating system tools. The following PowerShell command queries the A records for a domain and displays the response returned by the authoritative servers. Consistent sub-second responses indicate the DNS layer is operating as designed.

powershell 
Resolve-DnsName -Name yourdomain.com -Type A

# Example output:
Name                                           Type   TTL   Section    NameHost
----                                           ----   ---   -------    --------
yourdomain.com                                 A      3600  Answer     192.0.2.1

Use similar commands with -Type MX, -Type TXT, or -Type NS to inspect other records. When troubleshooting, always verify against the exact name servers listed in your domain's NS records. Simple DNS Plus v6 supplies the authoritative answers that keep your Windows-hosted applications reachable.