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A firewall may be blocking network connections from Orion. What IP Address, hostnames, and ports do I need to have opened up?

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For security reasons, network administrators often block access to unknown servers on the Internet. For Orion this may cause a problem because Orion communicates with Internet servers to report scores online and obtain information on new software updates.

Depending on the network firewall's setting, if Orion cannot communicate the error may be one of a number of different messages. These include:

  • Unable to communicate with remote server.
  • Unauthroized.
  • The remote server returned an unexpected response.

To resolve these problems please ask your network administrator to allow the following communication. If he or she has any questions or concerns please have them contact us directly.

The IP Address to www.orionscoringsystem.com and www.orionresults.com was updated on 17 May 2015. The new IP address is 52.6.156.55.


Hostname: www.orionscoringsystem.com

IP Address: 52.6.156.55

Port: 80 and 443

Protocol: TCP

Purpose: Obtain information about new updates to the software.


Hostname: www.orionresults.com

IP Address: 52.6.156.55

Port: 80 and 443

Protocol: TCP

Purpose: Report scores fired on Orion to our Internet based result system, the Result Center.


Hostname: ct.thecmp.org

IP Address: 198.101.48.102

Port: 80

Protocol: TCP

Purpose: Report competition results sanctioned by the Civilian Marksmanship Program (CMP) to the CMP.


Orion makes use of Amazon's AWS services. Amazon maintains their own list of servers. Information on their address ranges may be found at http://docs.aws.amazon.com/general/latest/gr/aws-ip-ranges.html.