When you call one of our test numbers, we capture the IDENTITY header and display it to you here
when you enter the code we provide over the phone. To use:
- Call one of these test numbers (note that Identity headers are less likely to be passed via
1-737-239-0640 (VoIP Innovations)
1-587-887-9890 (Fibernetics / Canada)
1-800-608-4005 (Verizon/MCI CIC 0222)
1-800-608-4006 (Lumen/Level3 CIC 5102)
1-800-608-4007 (Sinch/Iqnt CIC 0913)
- If we receive an IDENTITY header, we will play to you a six-digit code. If we do not get the
header, we will tell you.
- Once you have disconnected, enter the code here and we will decode and display the header. Results
are retained for 72 hours.
If you have questions, comments or feedback, write to: support at zipdx.com.
Frequently Asked Question: Why didn't you get my IDENTITY header?
Answer: There are several possibilities. One is that no header was sent by the originator. A second
is that some provider in the call path failed to pass it along. A third is that part of your call
path was over TDM. For example, AT&T currently sends most calls to Sinch via TDM.
Note that your results with other terminating providers will not necessarily match what you see
here. The results depend on the details of that terminating provider's STIR/SHAKEN implementation
and the specific path taken from your point of origination to that terminating provider. Results
can differ from one call to the next due to variations in the call path.