Ports and protocols

List of used IP addresses and ports in Amazon Web Services (AWS)

The table below shows the IP addresses and ports with which Sinch Contact Pro applications communicate. Traffic to these IP addresses and ports needs to be allowed in the region where your Sinch Contact Pro tenant is located. The region can be found in the login URL. For example, https://login-eu-c1.cc.sinch.com/... points to Frankfurt. TCP connections are established from the applications towards the Sinch Contact Pro service (AWS).

Table 1.
Application Protocol Port IP AF (Cape Town,

af-s1)

 IP AU (Sydney,

au-s2)

 IP EU (Frankfurt,

eu-c1)

 IP NA (Oregon,

na-w2)
API integrations (RI and OII) HTTPS (to Sinch) 443 ANY AWS ANY AWS ANY AWS ANY AWS
Communication Panel

HTTPS (to Sinch)

443

 ANY AWS ANY AWS

ANY AWS

ANY AWS

SRTP/UDP (to Sinch, from Sinch) (optional)

50000-53999

 13.244.234.57 54.66.183.69

52.58.48.57

54.190.249.236

  • Dashboard

  • DPO

  • Online Monitoring

  • Reporting

  • SC Web

  • Web Chat Configurator

HTTPS (to Sinch)

443

 ANY AWS ANY AWS

ANY AWS

ANY AWS
Data Migration Service (DMS) TCP/TLS 1433 (default) 13.245.246.172 3.69.251.74 44.224.158.187

Email

IMAP (from Sinch)

Destination port: 993

Source port: 1024-65535

 13.245.213.239 54.79.217.112

3.124.48.158

44.228.239.9

SMTP (from Sinch)

Destination port: 25, 465, 587

Source port: 1024-65535

 13.245.213.239 54.79.217.112

3.124.48.158

44.228.239.9

External IVR integration

 HTTPS (from Sinch)

443

 13.245.213.239 54.79.217.112

3.124.48.158

44.228.239.9

File transfer service

SFTP (to Sinch)

22

ANY AWS ANY AWS

ANY AWS

ANY AWS

Internet SIP trunk

SIP/TLSv1.2 (to Sinch, from Sinch) (TLSv1.3)

5061

 13.245.226.208 54.252.162.33

3.121.49.38

44.232.80.9

SRTP/UDP (to Sinch, from Sinch)

 50000-65535 13.245.226.208 54.252.162.33

3.121.49.38

44.232.80.9
OII callback to CRM HTTPS (from Sinch) 443 13.245.213.239 54.79.217.112 3.124.48.158 44.228.239.9

  • The destination IP address for HTTPS varies due to dynamic load balancing.

  • SRTP/UDP is needed for Communication Panel Session Border Controller (SBC) only when voice channel is used. Sinch Contact Pro identifies the sending IP and port from the first received SRTP package (from Communication Panel) in each call and sends the returning SRTP stream to that IP and port.

  • ANY AWS – AWS public IP ranges are explained in AWS documentation if stricter policies need to be applied than allowing outgoing traffic to any IP address.