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Liaison

Technical Requirements & Accessibility

Compatible Browsers 

A web browser is the program your computer uses to connect to the Internet and access ResidencyCAS.

Chrome and Firefox (Preferred)

For the optimum experience, we recommend using the most current version of Mozilla Firefox or Google Chrome, which work on both Macs and PCs. You can download these browsers for free here:

Safari

Safari is the default internet browser for Apple products and is compatible with ResidencyCAS. If you encounter any difficulty while using the most up-to-date version of Safari, try switching to Chrome or Firefox.

Edge

Edge is Microsoft’s most recent browser and is compatible with ResidencyCAS. If you encounter any difficulty while using the most up-to-date version of Edge, try switching to Chrome or Firefox.

Internet Explorer

As of June 15, 2022, Internet Explorer is no longer supported by Microsoft. Switch to a supported browser to access ResidencyCAS.

Troubleshooting

If you are having difficulty loading ResidencyCAS:

  • Ensure you are using the most current version of a compatible browser, which should support a minimum security standard of TLS 1.2. Most modern browsers already meet this requirement, but if you’re unsure or experiencing issues, you may need to refer to your browser’s help content or consider updating to a newer version.
  • Confirm that Cookies, JavaScript, and Pop-ups are enabled within your browser.
  • Be aware if you are using public Wi-Fi (e.g., libraries, coffee shops), connection speeds may slow down the portal.

To determine your browser's version, and to confirm that Cookies, JavaScript, and Pop-up windows are enabled, visit http://whatismybrowser.com.

Safe-List IP Addresses

If you’re having trouble accessing a portal and encounter error messages such as "access denied," "connection timed out," or "unable to connect to the server," it’s possible that a firewall is blocking your access. Another telltale sign of a firewall issue is if you can access the platform without problems on a different network, like your home network or mobile data.

To address this, ResidencyCAS employs Amazon Web Services (AWS) to ensure reliable access. We've compiled a table of IP addresses below that your IT department should safe-list to prevent these connectivity issues. Please be aware that AWS may periodically update these IP addresses. Additionally, your institution's software must have a minimum of version TLS 1.2 to establish a secure connection.

Live (Production) Environments

Portal

URL

IP Addresses

Applicant Portal

https://residencycas.liaisoncas.com

Ingress:

  • 34.226.75.67
  • 44.212.160.251
  • 52.45.20.177

Egress:

  • 35.168.84.72
  • 44.198.99.254
  • 54.221.197.67

Evaluator Portal

https://recommendations.liaisoncas.com

Ingress:

  • 34.226.75.67
  • 44.212.160.251
  • 52.45.20.177

Egress:

  • 35.168.84.72
  • 44.198.99.254
  • 54.221.197.67

Program Portal

https://programs.residencycas.com

  • 34.236.56.236
  • 52.201.147.233
  • 54.156.209.141
  • 52.203.59.228
  • 54.92.250.34

Review Portal

https://reviewers.residencycas.com

  • 34.236.56.236
  • 52.201.147.233
  • 54.156.209.141
  • 52.203.59.228
  • 54.92.250.34

Interview Portal

https://interviews.residencycas.com

Ingress:

  • 54.84.130.252

Egress:

  • 18.214.51.149
  • 44.210.22.38
  • 54.204.188.230

Video Technology (8x8)

 

  • 3.219.176.32/27
  • 34.223.80.128/27
  • 3.123.12.160/27
  • 18.139.118.128/27
  • 3.106.23.128/27
  • 3.9.41.96/27
  • 18.229.100.64/27
  • 130.61.162.0/24
  • 168.138.245.0/25
  • 152.67.144.0/24
  • 193.122.184.0/24
  • 152.67.21.0/24
  • 158.101.40.0/25
  • 129.146.204.128/27
  • 129.146.205.0/27
  • 129.146.205.96/27
  • 129.146.206.64/27
  • 168.138.111.128/25
  • 155.248.191.0/24
  • 130.61.64.185/32
  • 193.122.11.14/32
  • 168.138.236.29/32
  • 168.138.229.53/32
  • 140.238.95.196/32
  • 152.67.128.56/32
  • 193.122.177.113/32
  • 193.122.167.175/32
  • 152.67.14.48/32
  • 152.67.30.22/32
  • 129.146.227.2/32
  • 129.146.219.44/32
  • 168.138.110.244/32
  • 168.138.110.59/32
  • 140.238.148.121/32
  • 140.238.148.27/32
  • 168.138.216.49/32
  • 168.138.223.155/32
  • 158.101.192.6/32
  • 193.123.38.193/32
  • 193.122.64.56/32
  • 158.101.224.215/32

Medical School Portal

https://medicalschools.residencycas.com

Ingress:

  • 3.224.174.183
  • 52.0.120.196
  • 52.2.196.251

Egress:

  • 52.71.217.11
  • 54.161.89.200
  • 54.205.199.53

Training & Testing Environments

Portal

URL

IP Addresses

Applicant Portal

https://residencycas.prelaunch.liaisoncas.com

Ingress:

  • 52.1.245.183/32
  • 54.157.13.223/32
  • 54.174.7.196/32

Egress:

  • 3.221.151.218/32
  • 35.174.21.29/32
  • 100.24.188.151/32

Evaluator Portal

https://recommendations.prelaunch.liaisoncas.com

Ingress:

  • 52.1.245.183/32
  • 54.157.13.223/32
  • 54.174.7.196/32

Egress:

  • 3.221.151.218/32
  • 35.174.21.29/32
  • 100.24.188.151/32

Program Portal

https://programs.uat.residencycas.com

  • 3.226.95.9
  • 34.231.10.97
  • 35.173.150.212
  • 44.206.130.151
  • 107.22.61.128

Review Portal

https://reviewers.uat.residencycas.com

  • 3.226.95.9
  • 34.231.10.97
  • 35.173.150.212
  • 44.206.130.151
  • 107.22.61.128

Interview Portal

https://interviews.uat.residencycas.com

Ingress:

  • 34.196.15.94
  • 52.72.66.80

Egress:

  • 54.208.115.153
  • 107.22.227.185

Video Technology (8x8)

 

  • 3.219.176.32/27
  • 34.223.80.128/27
  • 3.123.12.160/27
  • 18.139.118.128/27
  • 3.106.23.128/27
  • 3.9.41.96/27
  • 18.229.100.64/27
  • 130.61.162.0/24
  • 168.138.245.0/25
  • 152.67.144.0/24
  • 193.122.184.0/24
  • 152.67.21.0/24
  • 158.101.40.0/25
  • 129.146.204.128/27
  • 129.146.205.0/27
  • 129.146.205.96/27
  • 129.146.206.64/27
  • 168.138.111.128/25
  • 155.248.191.0/24
  • 130.61.64.185/32
  • 193.122.11.14/32
  • 168.138.236.29/32
  • 168.138.229.53/32
  • 140.238.95.196/32
  • 152.67.128.56/32
  • 193.122.177.113/32
  • 193.122.167.175/32
  • 152.67.14.48/32
  • 152.67.30.22/32
  • 129.146.227.2/32
  • 129.146.219.44/32
  • 168.138.110.244/32
  • 168.138.110.59/32
  • 140.238.148.121/32
  • 140.238.148.27/32
  • 168.138.216.49/32
  • 168.138.223.155/32
  • 158.101.192.6/32
  • 193.123.38.193/32
  • 193.122.64.56/32
  • 158.101.224.215/32

Medical School Portal

https://prelaunch.webadmit.org

Ingress:

  • 52.4.23.7
  • 54.146.237.236
  • 107.22.225.245

Egress:

  • 18.211.99.194
  • 34.231.157.239
  • 44.196.149.171

Email Notifications

Emails can sometimes get flagged as junk or spam, which prevents them from appearing in your inbox. To ensure you receive email notifications, you may need to designate us as a trusted source through your email provider. Use these links to obtain your email provider's safe-listing instructions:

Safe-List Email Addresses

Ensure the following email addresses are safe-listed:

Interview Portal: Testing Your Hardware

Before any interviews, it's important to ensure your computer and internet connection are properly set up. We strongly recommend taking a few moments beforehand to test your hardware directly in the Interview Portal using the Test My Hardware feature. If you experience any issues, refer to your browser's help content.

Alternatively, if you’re using Chrome, you can visit https://test.8x8.vc to test your hardware. After conducting the test, your results are displayed with color-coded indicators:

  • Green: your system meets all the requirements. No further action is needed.
  • Yellow: your system meets the minimum requirements. Performance should be adequate, but you might experience minor issues.
    • Note that a yellow result from the “IPv6 enabled” or “Reflexive connectivity” test items should not impact the experience at all and can be safely ignored.
  • Red: there is an issue with your setup that may prevent you from having a smooth interview experience. You should refer to your browser's help content to troubleshoot.
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