T-Mobile USA Port Range Whitelist Documentation     2023/04/04
by Ami Sapphire



Notes gleaned from https://www.t-mobile.com/support/coverage/wi-fi-calling-on-a-corporate-network

Additional note: TCP port 5228 is apparently used somewhere, probably on the 206.29.177.36 IP address.

Note from https://www.reddit.com/r/tmobile/comments/51ap81/psarant_tmobile_wifi_calling_ports/

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Firewall > Aliases


Name: TMobile_WiFi_Calling_1
Type: Port(s)
Description: T-Mobile Wi-Fi Calling (208.54.0.0/16) block 
Content: 500,4500,5061	

Name: TMobile_WiFi_Calling_2
Type: Port(s)
Description:  T-Mobile Wi-Fi Calling (66.94.0.0/19) block
Content: 443,993

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Firewall > Rules > WAN


Action: Pass
Quick: (checked)
Interface: WAN
Direction: in
TCP/IP Version: IPv4
Protocol: TCP/UDP
Source: any
Destination: Single host or network; 208.54.0.0/16
Destination port range: from TMobile_WiFi_Calling_1 to TMobile_WiFi_Calling_1
Log: (checked - optional)
Category: WiFICalling
Description: T-Mobile Wi-Fi Calling Forwarding 1 (in)

Action: Pass
Quick: (checked)
Interface: WAN
Direction: out
TCP/IP Version: IPv4
Protocol: TCP/UDP
Source: Single host or network; 208.54.0.0/16
Source port range: from TMobile_WiFi_Calling_1 to TMobile_WiFi_Calling_1
Destination: any
Destination port range: from any to any
Log: (checked - optional)
Category: WiFICalling
Description: T-Mobile Wi-Fi Calling Forwarding 1 (out)

Action: Pass
Quick: (checked)
Interface: WAN
Direction: in
TCP/IP Version: IPv4
Protocol: TCP/UDP
Source: any
Destination: Single host or network; 66.94.0.0/19
Destination port range: from TMobile_WiFi_Calling_2 to TMobile_WiFi_Calling_2
Log: (checked - optional)
Category: WiFICalling
Description: T-Mobile Wi-Fi Calling Forwarding 2 (in)

Action: Pass
Quick: (checked)
Interface: WAN
Direction: out
TCP/IP Version: IPv4
Protocol: TCP/UDP
Source: Single host or network; 66.94.0.0/19
Source port range: from TMobile_WiFi_Calling_2 to TMobile_WiFi_Calling_2
Destination: any
Destination port range: from any to any
Log: (checked - optional)
Category: WiFICalling
Description: T-Mobile Wi-Fi Calling Forwarding 2 (out)

Action: Pass
Quick: (checked)
Interface: WAN
Direction: in
TCP/IP Version: IPv4
Protocol: any
Source: any
Destination: Single host or network; 206.29.177.36/32
Destination port range: from any to any
Log: (checked - optional)
Category: WiFICalling
Description: T-Mobile Wi-Fi Calling Forwarding 3 (in)

Action: Pass
Quick: (checked)
Interface: WAN
Direction: out
TCP/IP Version: IPv4
Protocol: any
Source: Single host or network; 206.29.177.36/32
Destination: any
Destination port range: from any to any
Log: (checked - optional)
Category: WiFICalling
Description: T-Mobile Wi-Fi Calling Forwarding 3 (in)