Identify MagicJack proxy

You can identify which proxy you are connected to using the following method:
Preparation

1. Download pmdump from http://www.ntsecurity.nu/toolbox/pmdump/.
2. Start MagicJack
3. Identify MagicJack's process ID (PID).
   • Open a DOS (command) window.
   • Execute pmdump -list
   • Find "magicjack.exe" in the output. Note the number associated with it.
4. Make at least one call. (Ex. to the special echo-test number: 909-390-0003.).

Final steps

1. Using the DOS (command) window and PID as described above, execute:
   pmdump {pid} mj_dump.txt
2. Open mj_dump.txt using a text editor like textpad.
3. Search for the string:
   s=ENSResip

That string occurs at the start of a line. And it occurs within repeating blocks of data, like a repeating pattern. In these blocks you will find lines starting with o= and c=. These lines contain the IP address of the SIP/proxy and RTP/vms servers respectively.
For example, if you connect to the Phoenix proxy, you should see:

o=- {nnnnnnnnnn} {nnnnnnnnnn} IN IP4 66.104.81.70
s=ENSResip
c=IN IP4 66.104.81.75

You can use nslookup to resolve both IP addresses to hostnames, revealing the regional SIP/proxy and RTP/vms servers you are presently using.